• Windmill lattice and phase diagram of windmill antiferromagnet
  • Schematic figure showing quench to quantum critical point and universal aging behavior of order parameter.
  • Percolation in thin film oxide due to a combination of chemical and electrostatic doping


Our Theoretical Condensed Matter Research Group is based at the Department of Physics and Astronomy at Iowa State University, and embedded in the lively condensed matter research environment of Iowa State University and the Ames Laboratory. We investigate non-equilibrium dynamics of strongly correlated quantum materials and the effects of competing interactions and emergent order on the electronic properties of solids. To approach these questions we employ a combination of analytical and numerical techniques from field-theory and statistical mechanics. Our research is often guided by experimental results and strives to understand the impact of strong interactions on the properties of quantum materials.

Research projects



5. Na Hyun Jo, Lin-Lin Wang, Peter P. Orth, Sergey L. Bud'ko, Paul C. Canfield
Phenomenal magneto-elastoresistance of WTe2: strain engineering of electronic and quantum transport properties
arXiv:1901.05090 (2019)

4. Thomas L. Schmidt, Giacomo Dolcetto, Christopher J. Pedder, Karyn Le Hur, Peter P. Orth
Mechanical resonances of mobile impurities in a one-dimensional quantum fluid
arXiv:1809.06889 (2018). 

3. Xu Yang, X. Zhao, Chirag Vaswani, Chris Sundahl, Y. Yao, Martin Mootz, Peter P. Orth, Jong Hoon Kang, Ilias E. Perakis, C.-Z. Wang, Kai-Ming Ho, Chang Beom Eom, Jigang Wang
Competing Orders and Ultrafast Energy Transfer at the Quantum Limit in a Nb3Sn Superconductor Probed by Terahertz Electrodynamics
arXiv:1808.06731 (2018). 

2. Rafael M. Fernandes, Peter P. Orth, Jörg Schmalian
Intertwined vestigial order in quantum materials: nematicity and beyond
arXiv:1804.00818 (2018).

1. Tianbai Cui, Xu Yang, Chirag Vaswani, Jigang Wang, Rafael M. Fernandes, Peter P. Orth
Impact of damping on superconducting gap oscillations induced by ultra-strong Terahertz pulses
arXiv:1802.09711 (2018).

Publications (until 01/18/2019)

32. Andreas Herklotz, Stefania Florina Rus, Nina Balke Wisinger, Christopher M. Rouleau, Er-Jia Guo, Amanda Huon, Santosh KC, Robert Roth, Xu Yang, Chirag Vaswani, Jigang Wang, Peter Orth, Mathias S. Scheurer, and Thomas Ward
Designing Morphotropic Phase Composition in BiFeO3
Nano Lett. 19 (2) 1033 (2019). 

31. Peter P. Orth, Bhilahari Jeevanesan, Rafael M. Fernandes, Jörg Schmalian
Enhanced nematic fluctuations near an antiferromagnetic Mott insulator and possible application to high-Tc cuprates
npj Quantum Materials 4, 4 (2019).

30. Jeff Walter, T. Charlton, H. Ambaye, M. R. Fitzsimmons, Peter P. Orth, Rafael M. Fernandes, Chris Leighton
Giant Electrostatic Modification of Magnetism via Electrolyte-Gate-Induced Cluster Percolation in La_{1−x}Sr_{x}CoO_{3−δ}
Phys. Rev. Materials 2, 111406(R) (2018). 

29. Morten H. Christensen, Peter P. Orth, Brian M. Andersen, Rafael M. Fernandes
Emergent magnetic degeneracy in iron pnictides due to the interplay between spin-orbit coupling and quantum fluctuations
Phys. Rev. Lett. 121, 057001 (2018). 

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