• 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

About

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

Publications

Preprints

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

5. Serafim Teknowijoyo, Na Hyun Jo, Mathias S. Scheurer, M. A. Tanatar, Kyuil Cho, S. L. Bud'ko, Peter P. Orth, P. C. Canfield, R. Prozorov
Nodeless superconductivity in type-II Dirac semimetal PdTe2: low-temperature London penetration depth and symmetry analysis
arXiv:1804.00723 (2018).

4. 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).

3. Morten H. Christensen, Peter P. Orth, Brian M. Andersen, Rafael M. Fernandes
Magnetic phase diagram of the iron pnictides in the presence of spin-orbit coupling: Frustration between C2 and C4 magnetic phases
arXiv:1712.07192 (2017)

2. 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
arXiv:1712.07188 (2017)

1. Peter P. Orth, Bhilahari Jeevanesan, Rafael M. Fernandes, Jörg Schmalian
Enhanced nematic fluctuations near the Mott insulating phase of high-Tc cuprates
arXiv:1703.02210 (2017).

Publications (until 06/05/2018)

26.  Xu Yang, Chirag Vaswani, Chris Sundahl, Martin Mootz, Pia Gagel, L. Luo, Jong Hoon Kang, Peter P. Orth, Ilias E. Perakis, Chang Beom Eom & Jigang Wang
Terahertz-light quantum tuning of a metastable emergent phase hidden by superconductivity
Nature Materials (2018). doi:10.1038/s41563-018-0096-3

25. Karyn Le Hur, Loïc Henriet, Loïc Herviou, Kirill Plekhanov, Alexandru Petrescu, Tal Goren, Marco Schiro, Christophe Mora, Peter P. Orth
Driven dissipative dynamics and topology of quantum impurity systems 
Comptes Rendus Physique (in press, 2018). ArXiv version: arXiv:1702.05135 (2017).

24. William. R. Meier, Qing-Ping Ding, Andreas Kreyssig, Sergey L. Bud'ko, Aashish Sapkota, Karunakar Kothapalli, Vladislav Borisov, Roser Valentí, Christian D. Batista, Peter P. Orth, Rafael M. Fernandes, Alan I. Goldman, Yuji Furukawa, Anna E. Böhmer, Paul C. Canfield
Hedgehog spin-vortex crystal stabilized in a hole-doped iron-based superconductor
npj Quantum Materials 3, 5 (2018)

23. Michael Schütt, Peter P. Orth, Alex Levchenko, Rafael M. Fernandes
Controlling competing orders via nonequilibrium acoustic phonons: Emergence of anisotropic effective electronic temperature
Phys. Rev. B 97, 035135 (2018). Read more about