Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session B70: Iridates
11:30 AM–2:18 PM,
Monday, March 14, 2022
Room: Hyatt Regency Hotel -Jackson Park B
Sponsoring
Unit:
DMP
Chair: Woojin Kim, Stanford University
Abstract: B70.00007 : Spin fluctuations and possible superconductivity from canting in Sr2IrO4*
1:06 PM–1:18 PM
Presenter:
Lena Engström
(McGill University)
Authors:
Lena Engström
(McGill University)
Chia-Chuan Liu
(Universite de Montreal)
William Witczak-Krempa
(Universite de Montreal)
Tami Pereg-Barnea
(McGill University)
Studies have shown a strong coupling between magnetic order and structural changes in Sr2IrO4. Effects such as strain modify bond lengths and the staggered rotations of the lattice, which in turn affects the canted antiferromagnetic order. In this work, we study possible spin fluctuation mediated superconductivity in a model of Sr2IrO4 were canted rotations are included. These inherently multiorbital properties are considered in both the electron and hole doped regimes. The effects of symmetry breaking spin fluctuations and manipulating the band structure via strain are thus studied in several possible superconducting regimes. We comment on ways to increase the chance of superconductivity.
*- “Etablissement de nouveaux chercheurs universitaires” Grant from FRQNT- Discovery Grant from NSERC- Grant from Fondation Courtois
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