David M Fobes

Information Systems & Modeling
Los Alamos National Laboratory


Location

Los Alamos, NM

Intro

I received my PhD in Physics from Tulane University where, as a Louisiana Board of Regents Graduate Fellow, I studied the effects of chemical substitution on strongly correlated electron materials using advanced materials synthesis techniques.

Shortly thereafter I joined the Neutron Scattering Group in CMPMSD at Brookhaven National Laboratory, where I investigated the lattice dynamics in iron-based superconductors using neutron spectroscopy, and assisted in the development of a new scattering instrument at Oak Ridge National Lab, HYSPEC. As a former member of MPA-CMMS at Los Alamos National Lab, I am used neutrons to study how magnetic frustration and anisotropy affect emergent phases observed near superconductivity, and the spin dynamics of skyrmion lattices.

My work has generated considerable impact in my field; my more than thirty publications, appearing in journals such as Nature Physics, Nature Materials, and Nature Communications, have already been cited nearly six hundred times. My broader research interests include the complex role of magnetic interactions in quantum materials, which have the potential for future functionality, and machine learning for materials research.

I currently work in the Information Systems and Modeling (A-1) Group at Los Alamos National Laboratory (LANL), working on optimization for critical infrastructure.

Skills

95 %

Julia

95 %

Python

95 %

numpy

85 %

scipy

95 %

matplotlib

85 %

Matlab

75 %

Mathematica

75 %

IDL

70 %

LabView

60 %

C

55 %

C++

95 %

git

95 %

MacOS

75 %

Windows

95 %

*nix

90 %

LaTeX

70 %

OriginPro

10 %

Rust

40 %

Ruby

40 %

Javascript

Experience

2018 – present

Los Alamos National Laboratory

R&D Scientist

Los Alamos, NM

Scientist in the Information Systems and Modeling Group (A-1)

2015 – 2018

Los Alamos National Laboratory

Postdoc Research Associate

Los Alamos, NM

Investigation of the magnetism dynamics of heavy fermion compounds and skyrmion materials using neutron spectroscopy, discovering an intimate connection between the modulated magnetic states of CeRhIn5 and its high nematic susceptibility, and making the first measurements of the spin excitation spectra of skyrmion compound MnSi via neutron Time of Flight spectroscopy. Also designed and successfully tested a versatile new uniaxial strain device for use in small angle neutron scattering

2012 – 2015

Brookhaven National Laboratory

Research Associate

Upton, NY

Study of the lattice dynamics in the iron chalcogenide superconducting family Fe(1+y)Te(1-x)Se(x) using neutron scattering, finding evidence for an orbital ordering transition in parent compound FeTe, appearing as a Bond-Order-Wave, and for an intimate coupling between magnetic fluctuations and the lattice degree of freedom resulting in the appearance of a "forbidden" phonon. Also participated in the comissioning of a hybrid spectrometer (HYSPEC) at Oak Ridge National Lab's Spallation Neutron Source, and began developement of NeutronPy

2010 – 2012

Tulane University

Postdoctoral Research Fellow

New Orleans, LA

Investigation of the superconductivity as a function of excess-Fe content in iron chalcogenide superconductor family Fe(1+y)Te(1-x)Se(x) via materials synthesis, bulk characterization techniques, and neutron scattering

Education

2006 – 2010

Tulane University

Doctor of Philosophy (Ph.D.) in Physics

New Orleans, LA

Dissertation: 'Orbital dependence of magnetism in layered ruthenate systems'

Advisor: Zhiqiang Mao

2002 – 2006

Tulane University

Bachelor of Science (B.Sc.) in Physics, Math

New Orleans, LA

Awards


R&D 100 Award (2019)

For development of Severe Contingency Solver (Los Alamos National Laboratory Team)


Distinguished Performance Award (2019)

Critical Infrastructure Optimization Team at Los Alamos National Laboratory


Institute for Complex Adaptive Matter (ICAM) Junior Scientist Travel Award (2010)

Awarded to 30 applicants per year, only 5-10 for domestic travel.


Provost's Office Graduate Student Travel Fund, Tulane University (2009)

Travel award to present my research at the 2009 APS March Meeting.


58th Meeting of Nobel Laureates at Lindau: Physics, Attendee (2008)

560 young scientists selected (only 50 from the US) out of 20,000 applicants


Louisiana Board of Regents Graduate Fellowship Grant (2006-2010)

Graduate Studeis support. One award out of approx. 15 incoming graduate applicants in Physics.


National Society of Collegiate Scholars (2003)

Offered to students in their first two years with a 3.4 GPA or greater, and are within the top 20% of their class.

Funding


Neutron Beam Time

Authored and co-authored 66 successful proposals for neutron beam time at various international and domestic neutron sources since 2012, with an acceptance rate of more than 95%. The corresponding allocated beam time consists of of 336 days, which corresponds to approximately $6,720,000 in third party funding, where neutron beam time is typical estimated to cost in excess of ~20,000/day.


ISTI Rapid Response G&A 2018 Cloud Computing

Framework for On-Demand Cloud Computation of Theoretical Models of Materials over Discretized Phase Volumes

Teaching

Students Supervised:
Graduate: 4
Undergraduate: 2
Jan 2017 – Apr 2017

Introduction to Python for Data Analysis and Visualization

Instructor

Los Alamos National Laboratory

Designed and taught a course on introductory Python to members of MPA-CMMS at LANL.

Aug 2008 – Dec 2008

Modern Physics

Private Tutor

Tulane University

Provided private tutoring services for undergraduates in the introductory Modern Physics course

Aug 2008 – Dec 2008

Introduction to Thermodynamics

Private Tutor

Tulane University

Provided private tutoring services for undergraduates in the introductory Thermodynamics course

Aug 2008 – Dec 2008

Partial Differential Equations

Private Tutor

Tulane University

Provided private tutoring services for undergraduates in the Partial Differential Equations course

Jan 2008 – May 2008

General Physics

Private Tutor

Tulane Unversity

Provided tutoring services for students of the undergraduate General Physics course

Sept 2005 – Dec 2005

General Physics

Private Tutor

Rutgers Unversity

Provided tutoring services for students of the undergraduate General Physics course

Publications

h-index: 18
Publications: 44
Citations: 1411
(Google Scholar)
2022

Science 375, 1025

doi: 10.1126/science.abe4441

Topological magnon band structure of emergent Landau levels in a skyrmion lattice

T. Weber, D. M. Fobes, J. Waizner, P. Steffens, G. S. Tucker, M. Böhm, L. Beddrich, C. Franz, H. Gabold, R. Bewley, D. Voneshen, M. Skoulatos, R. Georgii, G. Ehlers, A. Bauer, C. Pfleiderer, P. Böni, M. Janoschek, M. Garst

2021

Nature Materials 20, 1221

doi: 10.1038/s41563-021-00984-7

Electronic properties of the bulk and surface states of Fe1+yTe1−xSex

Y. Li, N. Zaki, V. O. Garlea, A. T. Savici, D. M. Fobes, Z. Xu, F. Camino, C. Petrovic, G. Gu, P. D. Johnson, J. M. Tranquada, I. A. Zaliznyak

2021

Electric Power Systems Research 190, 106736

doi: 10.1016/j.epsr.2020.106736

PowerModelsRestoration.jl: An open-source framework for exploring power network restoration algorithms

N. Rhodes, D. M. Fobes, C. Coffrin, L. Roald

2021

Proceedings of the Eleventh ACM International Conference on Future Energy Systems e-Energy '20, 503

doi: 10.1145/3396851.3402121

A Flexible Storage Model for Power Network Optimization

F. Geth, C. Coffrin, D. M. Fobes

2020

Electric Power Systems Research 189, 106664

doi: 10.1016/j.epsr.2020.106664

PowerModelsDistribution.jl: An open-source framework for exploring distribution power flow formulations

D. M. Fobes, S. Claeys, F. Geth, C. Coffrin

2020

Communications Materials 1, 83

doi: 10.1038/s43246-020-00083-1

Skyrmion lattice creep at ultra-low current densities

Y. Luo, S.-Z. Lin, M. Leroux, N. Wakeham, D. M. Fobes, E. D. Bauer, J. B. Betts, J. D. Thompson, A. Migliori, M. Janoschek, B. Maiorov

2018

arXiv 1901.01331, [cs.DC]

doi: 10.48550/arXiv.1901.01331

The ISTI Rapid Response on Exploring Cloud Computing 2018

Carleton Coffrin, James Arnold, Stephan Johannes Eidenbenz, Derek Aberle, J. J. Ambrosiano, Zachary K. Baker, Sara Brambilla, Michael Brown, K. Nolan Carter, Pinghan Chu, Patrick Conry, Keeley Costigan, Ariane Eberhardt, David M. Fobes, Adam Gausmann, Sean Harris, Donovan Heimer, Marlin Holmes, Bill Junor, Csaba Kiss, Steve Linger, Rodman Ray Linn, Li-Ta Lo, Jonathan MacCarthy, Omar E. Marcillo, Clay McGinnis, Alexander McQuarters, Eric Michalak, Arvind Mohan, Matt Nelson, Diane Oyen, Nidhi Parikh, Donatella Pasqualini, Aaron Scott Pope, Reid B. Porter, Chris Rawlings, Hannah Reinbolt, Reid D. Rivenburgh, Philip Romero, Kevin Schoonover, Alexei N. Skurikhin, Daniel R. Tauritz, Dima Tretiak, Zhehui Wang, James Wernicke, Bradley T Wolfe, Phillip Justin Jr. Wolfram, Jonathan Woodring

2018

Nature Physics 14, 456

doi: 10.1038/s41567-018-0060-9

Tunable Emergent Heterostructures in a Prototypical Correlated Metal

D. M. Fobes, S. Zhang, S.-Z. Lin, P. Das, N. J. Ghimire, E. D. Bauer, J. D. Thompson, L. W. Harriger, G. Ehlers, A. Podlesnyak, R. I. Bewley, A. Sazonov, V. Hutanu, F. Ronning, C. D. Batista, and M. Janoschek

2018

Phys. Rev. B 97, 104423

doi: 10.1103/PhysRevB.97.104423

Anisotropic magnetocrystalline coupling of the skyrmion lattice in MnSi

Y. Luo, S.-Z. Lin, D. M. Fobes, Z. Liu, E. D. Bauer, J. B. Betts, A. Migliori, J. D. Thompson, M. Janoschek, and B. Maiorov

Elasticity in the skyrmion phase unveils depinning at ultra-low current densities

Y. Luo, S.-Z. Lin, M. Leroux, N. Wakeham, D. M. Fobes, E. D. Bauer, J. B. Betts, J. D. Thompson, A. Migliori, M. Janoschek, B. Maiorov

2017

Physical Review B 96, 174413

doi: 10.1103/PhysRevB.96.174413

Realization of the Axial Next-Nearest-Neighbor Ising model in U3Al2Ge3

D. M. Fobes, S.-Z. Lin, N. J. Ghimire, E. D. Bauer, J. D. Thompson, M. Bleuel, L. M. DeBeer-Schmitt, and M. Janoschek

Solving quantum riddles with neutron scattering

D. M. Fobes, M. Janoschek

2017

Applied Physics Letters 110, 192409

doi: 10.1063/1.4983473

Versatile Strain-Tuning of Modulated Long-Period Magnetic Structures

D. M. Fobes, Y. Luo, N. Leon, E. D. Bauer, V. R. Fanelli, M. A. Taylor, L. M. DeBeer-Schmitt, and M. Janoschek

2017

Nature Communications 8, 23

doi: 10.1038/s41467-017-00066-w

Ordered hydroxyls on Ca3Ru2O7(001)

D. Halwidl, W. Mayr-Schmölzer, D. Fobes, J. Peng, Z. Q\. Mao, M. Schmid, F. Mittendorfer, J. Redinger, and U. Diebold

2017

Journal of Physics: Condensed Matter 29, 17LT01

doi: 10.1088/1361-648X/aa6696

Citations: 1

Low temperature magnetic structure of CeRhIn5 by neutron diffraction on absorption-optimized samples

D. M. Fobes, E. D. Bauer, J. D. Thompson, A. Sazonov, V. Hutanu, F. Ronning, and M. Janoschek

2016

Physical Review B 94, 121103(R)

doi: 10.1103/PhysRevB.94.121103

Forbidden phonon: Dynamical signature of bond symmetry breaking in the iron chalcogenides

D. Fobes, I. A. Zaliznyak, J. M. Tranquada, Z. Xu, G. Gu, X.-G. He, W. Ku, Y. Zhao, M. Matsuda, V. Garlea, and B. Winn

2015

Nature Materials 15, 450

doi: 10.1038/NMAT4512

Citations: 8

Adsorption of Water at the SrO Surface of Ruthenates

D. Halwidl, B. Stöger, W. Mayr-Schmölzer, J. Pavelec , D. M. Fobes, J. Peng, Z. Q. Mao, G. Parkinson, M. Schmid, F. Mittendorfer, J. Redinger, and U. Diebold

2014

Physical Review B 90, 165438

doi: 10.1103/PhysRevB.90.165438

Citations: 5

Point Defects at Cleaved Sr(n+1)Ru(n)O(3n+1) (001) Surfaces

B. Stöger, M. Hieckel, F. Mittendorfer, Z. Wang, M. Schmid, G. S. Parkinson, D. M. Fobes, J. Peng, J. E. Ortmann, A. Limbeck, Z. Q. Mao, J. Redinger, and U. Diebold

2014

Physical Review Letters 113, 116101

doi: 10.1103/PhysRevLett.113.116101

Citations: 7

High chemical activity of a perovskite surface: Reaction of CO with Sr3Ru2O7

B. Stöger, M. Hieckel, F. Mittendorfer, Z. Wang, D. Fobes, J. Peng, Z. Q. Mao, M. Schmid, J. Redinger, and U. Diebold

2014

ACS Nano 8, 7531

doi: 10.1021/nn502895s

Citations: 12

Cluster Nucleation and Growth from a Highly Supersaturated Adatom Phase: Silver on Magnetite

R. Bliem, R. Kosak, L. Perneczky, Z. Novotny, O. Gamba, D. Fobes, Z. Q. Mao, M. Schmid, U. Diebold, P. Blaha, and G. S. Parkinson

2014

Physical Review Letters 112, 187202

doi: 10.1103/PhysRevLett.112.187202

Citations: 17

Ferro-Orbital Ordering Transition in Iron Telluride Fe(1+y)Te

D. Fobes, I. A. Zaliznyak, Z. Xu, R. Zhong, G. Gu, J. M. Tranquada, L. Harriger, D. Singh, O. Garlea, M. Lumsden, and B. Winn

2013

Nature Communications 4, 2596

doi: 10.1038/ncomms3596

Citations: 15

Enhanced spin-triplet superconductivity near dislocations in Sr2RuO4

Y. A. Ying, N. E. Staley, Y. Xin, K. Sun, X. Cai, D. Fobes, T. J. Liu, Z. Q. Mao, and Y. Liu

2013

Physical Review B 87, 085125

doi: 10.1103/PhysRevB.87.085125

Citations: 7

From quasi-two-dimensional metal with ferromagnetic bilayers to Mott insulator with G-type antiferromagnetic order in Ca3(Ru(1-x)Ti(x))2O7

J. Peng, X. Ke, G. C. Wang, J. E. Ortmann, D. Fobes, T. Hong, W. Tian, X. S. Wu, and Z. Q. Mao

2013

Physical Review B 87, 081104

doi: 10.1103/PhysRevB.87.081104

Citations: 8

Unconventional quantum oscillations in mesoscopic rings of spin-triplet superconductor Sr2RuO4

X. Cai, Y. A. Ying, N. E. Staley, Y. Xin, D. Fobes, T. J. Liu, Z. Q. Mao, and Y. Liu

2012

Physical Review B 86, 014434

doi: 10.1103/PhysRevB.86.014434

Citations: 4

Effect of disorder on quantum phase transition in the double layered ruthenates (Sr(1-x)Ca(x))3Ru2O7

Z. Qu, J. Peng, T. J. Liu, D. Fobes, V. Dobrosavljevic, L. Spinu, and Z. Q. Mao

2012

Physical Review B 85, 144427

doi: 10.1103/PhysRevB.85.144427

Citations: 9

Ferromagnetism in CuFeSb: Evidence of competing magnetic interactions in iron-based superconductors

B. Qian, J. Lee, J. Hu, G. C. Wang, P. Kumar, M. H. Fang, T. J. Liu, D. Fobes, H. Pham, L. Spinu, X. S. Wu, M. Green, S. H. Lee, and Z. Q. Mao

2012

Journal of Applied Physics 111, 083709

doi: 10.1063/1.4704387

Citations: 2

Metal-insulator transition in doped Ca2RuO4: potential application in bolometric detection

D. Fobes, E. Vehstedt, G. C. Wang, T. J. Liu, Z. Q. Mao

2012

Physical Review Letters 108, 107002

doi: 10.1103/PhysRevLett.108.107002

Citations: 30

Friedel-like Oscillations from Interstitial Iron in Superconducting Fe(1+y)Te0.62Se0.38

V. Thampy, J. Kang, J. A. Rodriguez-Rivera, W. Bao, A. T. Savici, J. Hu, T. J. Liu, B. Qian, D. Fobes, Z. Q. Mao, C. B. Fu, W. C. Chen, Q. Ye, R. W. Erwin, T. R. Gentile, Z. Tesanovic, and C. Broholm

2011

Phys. Rev. B 84, 014406

doi: 10.1103/PhysRevB.84.014406

Citations: 3

Magnetic phase transitions and bulk spin-valve effect tuned by in-plane field orientation in Ca3Ru2O7

D. Fobes, J. Peng, Z. Qu, T. J. Liu, and Z. Q. Mao

2010

Nature Materials 9, 716

doi: 10.1038/NMAT2800

Citations: 176

From (pi, 0) magnetic order to superconductivity with (pi,pi) magnetic resonance in Fe1.02(Te(1-x)Se(x))

T. J. Liu, J. Hu, B. Qian, D. M. Fobes, Z. Q. Mao, W. Bao, M. Reehuis, S. A. J. Kimber, K. Prokes, S. Matas, D. N. Argyriou, A. Hiess, A. Rotaru, H. Pham, L. Spinu, Y. Qiu, V. Thampy, A. T. Savici, J. A. Rodriguez, and C. Broholm

2010

Physical Review B 82, 024417

doi: 10.1103/PhysRevB.82.024417

Citations: 14

Interplay between the lattice and spin degrees of freedom in (Sr(1-x)Ca(x))3Ru2O7

J. Peng, Z. Qu, B. Qian, D. Fobes, T. J. Liu, X. Wu, H. M. Pham, L. Spinu, and Z. Q. Mao

2010

Physical Review B 81, 172402

doi: 10.1103/PhysRevB.81.172402

Citations: 10

Anisotropy of magnetoresistivities in Sr4Ru3O10: Evidence for an orbital-selective metamagnetic transition

D. Fobes, T. J. Liu, Z. Qu, H. Q. Yuan, M. Salamon, M. Zhou, J. Hooper, and Z. Q. Mao

2010

Physical Review B 81, 155121

doi: 10.1103/PhysRevB.81.155121

Citations: 6

Doping and dimensionality effects on the core-level spectra of layered ruthenates

H. Guo, Y. Li, D. Urbina, B. Hu, R. Jin, T. Liu, D. Fobes, Z. Q. Mao, E. W. Plummer, and J. Zhang

2009

Physical Review Letters 103, 247004

doi: 10.1103/PhysRevLett.103.247004

Citations: 16

Suppression of Proximity Effect and the Enhancement of p-Wave Superconductivity in the Sr2RuO4-Ru System

Y. A. Ying, Y. Xin, B. W. Clouser, E. Hao, N. E. Staley, R. J. Myers, L. F. Allard, D. Fobes, T. Liu, Z. Q. Mao, and Y. Liu

2009

Physical Review B 80, 174509

doi: 10.1103/PhysRevB.80.174509

Citations: 159

Charge carrier localization induced by excess Fe in the superconductor Fe(1+y)Te(1-x)Se(x)

T. J. Liu, X. Ke, B. Qian, J. Hu, D. M. Fobes, E. K. Vehstedt, H. Pham, J. H. Yang, M. H. Fang, L. Spinu, P. Schiffer, Y. Liu, Z. Q. Mao

2009

Physical Review B 80, 115130

doi: 10.1103/PhysRevB.80.115130

Citations: 10

Complex electronic states in double-layered ruthenates (Sr(1-x)Ca(x))3Ru2O7

Z. Qu, J. Peng, T. J. Liu, D. Fobes, L. Spinu, and Z. Q. Mao

2009

Journal of Physics Conference Series 150, 042134

doi: 10.1088/1742-6596/150/4/042134

Citations: 4

Real-space observation of magnetic domain structure at metamagnetic tansition in a triple-layer ruthenate Sr4Ru3O10

Y. Nakajima, Y. Matsumoto, D. Fobes, M. Zhou, Z. Q. Mao, and T. Tamegai

2008

Physical Review B 78, 180407(R)

doi: 10.1103/PhysRevB.78.180407

Citations: 23

Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr(1-x)Ca(x))3Ru2O7

Z. Qu, L. Spinu, H. Yuan, V. Dobrosavljević, W. Bao, J. W. Lynn, M. Nicklas, J. Peng, T. Liu, D. Fobes, E. Flesch, and Z. Q. Mao

2008

Physical Review Letters 101, 057002

doi: 10.1103/PhysRevLett.101.057002

Citations: 9

Band-Dependent Normal-State Coherence in Sr2RuO4: Evidence from Nernst Effect and Thermopower Measurements

X. Xu, Z. Xu, T. Liu, D. Fobes, Z. Mao, Y. Liu

2007

Physical Review B 76, 094405

doi: 10.1103/PhysRevB.76.094405

Citations: 9

Magnetic, electrical transport, and thermoelectric properties of Sr4Ru3O10: Evidence for a field-induced electronic phase transition at low temperatures

Z. Xu, X. Xu, R. Freitas, Z. Long, M. Zhou, D. Fobes, M. Fang, P. Schiffer, Z. Mao, and Y. Liu

2007

Physical Review B 75, 094429

doi: 10.1103/PhysRevB.75.094429

Citations: 13

Phase diagram of the electronic states of trilayered ruthenate Sr4Ru3O10

D. Fobes, M. H. Yu, M. Zhou, J. Hooper, C. J. O'Connor, M. Rosario, and Z. Q. Mao

2007

Physical Review B 75, 060403(R)

doi: 10.1103/PhysRevB.75.060403

Citations: 8

Competing magnetic fluctuations in Sr3Ru2O7 probed by Ti doping

J. Hooper, M. H. Fang, M. Zhou, D. Fobes, N. Dang, Z. Q. Mao, C. M. Feng, Z. A. Xu, M. H. Yu, C. J. O'Connor, G. J. Xu, N. Andersen, and M. Salamon

2005

Materials Research Bulletin 40, 942

doi: 10.1016/j.materresbull.2005.03.004

Citations: 15

Electronic and magnetic properties of triple-layered ruthenate Sr4Ru3O10 single crystals grown by a floating-zone method

M. Zhou, J. Hooper, D. Fobes, Z. Q. Mao, V. Golubb and C. J. O'Connor

Presentations

Invited: 17
Contributed: 31
26 October 2021

2021 INFORMS Annual Meeting

Anaheim, CA

Contributed talk

PowerModels: A Framework for Exploring Power Flow Formulations

22 September 2021

Long Duration Storage Shot Summit, Office of Electricity, Department of Energy

Virtual

Invited Briefing

National Capabilities to Support Decision Making around Energy Storage

21 July 2021

JuliaCon 2021

Virtual

Contributed talk

Unbalanced Power Flow Optimization with PowerModelsDistribution

8 July 2021

Los Alamos National Laboratory

Virtual

Invited Lecture

Introduction to PowerModelsDistribution

16 April 2021

University of Wisconsin-Madison

Virtual

Invited Lecture

Phase-Unbalanced Power Distribution Network Optimization with PowerModelsDistribution.jl

15 March 2021

Office of Electricity, Department of Energy

Virtual

Invited Briefing

Resilience in Infrastructure Systems

10 November 2020

2020 INFORMS Annual Meeting

Virtual

Contributed talk

PowerModelsDistribution.jl: Exploring Optimal Power Flow In Distribution Networks

1 July 2020

Power Systems Computation Conference 2020

Virtual

Contributed talk

PowerModelsDistribution.jl: An open-source framework for exploring distribution power flow formulation

25 June 2018

American Conference on Neutron Scattering

College Park, Maryland

Invited talk

Spin excitations of the skyrmion lattice in MnSi

9 August 2017

Skyrmionics: Materials, Phenomena and Applications

Santa Fe, New Mexico

Invited talk

Spin excitations of the skyrmion lattice in MnSi

17-21 July 2017

International Conference on Strongly Correlated Electron Systems (SCES)

Prague, Czech Republic

Poster

Magnetic frustration in a prototypical strongly correlated metal

9-13 July 2017

International Conference on Neutron Scattering (ICNS)

Daejeon, South Korea

Contributed talk

Magnetic frustration in a prototypical strongly correlated metal

7 June 2017

Science in '3'

Los Alamos National Laboratory, Los Alamos, NM

Contributed talk

Emerging Electronic Order from Frustrated Magnetism

14 March 2017

APS March Meeting

New Orleans, LA

Contributed talk

Magnetic frustration in a prototypical strongly correlated electron system

11 January 2016

LDRD External Project Review

Los Alamos National Laboratory, Los Alamos, NM

Neutron spectroscopy investigation of skyrmion lattice materials

2 November 2016

Triennial DOE-BES-MSE Review

Los Alamos National Laboratory, Los Alamos, NM

Poster

Neutron Spectroscopy Studies of CeRhIn5

11 July 2016

American Conference on Neutron Scattering

Long Beach, CA

Contributed talk

Magnetic frustration induced by applied magnetic field in CeRhIn5

14 March 2016

APS March Meeting

Baltimore, MD

Contributed talk

Spin wave spectrum of CeRhIn5 under applied magnetic field

4 March 2015

APS March Meeting

San Antonio, TX

Contributed talk

"Forbidden" phonon in the iron chalcogenide series

20 November, 2014

Young Researcher Symposium

Brookhaven National Laboratory, Upton, NY

Poster

Ferro-orbital order and unexpected phonon scattering in the iron chalcogenide superconductor family

12 November 2014

Los Alamos National Laboratory

Los Alamos, NM

Invited talk

Ferro-orbital order and 'forbidden' phonons in the iron chalcogenides

9 November 2014

Louisiana State University

Baton Rouge, LA

Invited talk

Ferro-orbital order and an unexpected phonon mode in the iron chalcogenide superconductor family

4 June 2014

American Conference on Neutron Scattering

Knoxville, TN

Contributed talk

Observation of an acoustic mode potentially driven by an imbalance between the magnetic moments of neighboring Fe atoms in Fe(1-x)Te (y < 0.12)

14 May 2014

Oak Ridge National Laboratory

Oak Ridge, TN

Invited Seminar

Bond order wave formation and an unexpected acoustic mode in iron-chalcogenide end-member Fe(1+y)Te revealed by neutron scattering studies

5 March 2014

APS March Meeting

Denver, CO

Contributed talk

Observation of acoustic-phonon-like mode driven by magnetic imbalance between neighboring Fe atoms in Fe(1+y)Te (y<0.12)

25 February 2014

QCMD Seminar Series at Oak Ridge National Laboratory

Oak Ridge, TN

Invited talk

Neutron scattering studies of the effects of non-stoichiometric interstitial Fe in iron-chalcogenide end-member Fe(1+y)Te

19 March 2013

APS March Meeting

Baltimore, MD

Contributed talk

Unconventional (pi, pi) order in Fe1.1Te

28 February 2012

APS March Meeting

Boston, MA

Contributed talk

Anisotropy of magnetoresistivities in Sr3Ru2O7: Evidence for orbital-dependent metamagnetism

13 October 2011

Brookhaven National Laboratory

Upton, NY

Invited Colloquium

Exotic phenomena in strongly correlated layered ruthenates

23 September 2011

Oak Ridge National Laboratory

Oak Ridge, TN

Invited Colloquium

Exotic phenomena in strongly correlated layered ruthenates

22 June 2011

Lawrence Livermore National Laboratory

Livermore, CA

Invited Colloquium

Exotic phenomena in strongly correlated layered ruthenates

23 March 2011

APS March Meeting

Dallas, TX

Contributed talk

Metastable Magnetic states in Ca3Ru2O7

8 July 2010

Tulane University

New Orleans, LA

Dissertation Defense

Orbital dependence of magnetism in layered ruthenate systems

19 March 2010

APS March Meeting

Portland, OR

Contributed talk

Anisotropic magnetic coupling in Ca3Ru2O7 probed by angle resolved magnetotransport

15 September 2009

Tulane University

New Orleans, LA

Invited Colloquium

Orbital Physics in Layered Ruthenates

21 May 2009

Tulane University

New Orleans, LA

Prospectus Defense

Probing the orbital dependence of magnetic phenomena in layered ruthenate systems

19 March 2009

APS March Meeting

Pittsburgh, PA

Contributed talk

Probing orbital-dependent magnetism in layered perovskite ruthenates through angle-dependent magnetoresistivity

14 March 2008

APS March Meeting

New Orleans, LA

Contributed talk

Anisotropy of magnetoresistivity in trilayered ruthenate Sr4Ru3O10: Evidence for orbital dependent metamagnetism

5 March 2007

APS March Meeting

Denver, CO

Contributed talk

Competing magnetic fluctuations in Sr3Ru2O7 probed by Ti doping

10 April 2006

Tulane University

New Orleans, LA

Seminar

Approximate solutions to the heat equation over coated domains