Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W61: 5d/4d Transition Metal Systems
8:00 AM–11:00 AM,
Friday, March 6, 2020
Room: Mile High Ballroom 4B
Sponsoring
Units:
DMP DCMP
Chair: Kentaro Ueda, Univ of Tokyo
Abstract: W61.00002 : Competing magnetic orders and anisotropic transport in quantum critical Sr3Ru2O7*
Presenter:
Aditya Putatunda
(Univ of Missouri - Columbia)
Authors:
Aditya Putatunda
(Univ of Missouri - Columbia)
Guanhua Qin
(Univ of Missouri - Columbia)
Wei Ren
(Dept of Physics, Univ of Shanghai)
David Singh
(Univ of Missouri - Columbia)
We investigated Sr3Ru2O7, the classic example of a quantum critical metal known to show a metamagnetic quantum phase transition as well as electronic nematicity, through first-principles calculations. The density functional calculations predict a ferromagnetic ground state in contrast to its experimentally observed paramagnetic character. This raises the question whether there exists competing magnetic orders that suppresses its ferromagnetism and if so, then what are those? We performed a thorough search to identify such low energy antiferromagnetically ordered metastable states. We indeed obtain such an (almost) doubly degenerate state with a striped order and calculated its associated transport properties within Boltzmann transport theory. Our results indicate significant transport anisotropy which have been discussed in context of strong spin fluctuations present in this material.
*Work at the University of Missouri was supported by the Department of Energy Award No. DE-SC0019114
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