Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session Q56: Cooperative Phenomena (Spin Structures, Spin Waves, Phase Transitions) I
3:00 PM–6:00 PM,
Wednesday, March 8, 2023
Room: Room 304
Sponsoring
Unit:
GMAG
Chair: Junjie Yang, New Jersey Institute of Technology
Abstract: Q56.00013 : A Multi-Modal Spectroscopy Technique to Probe Emergent Quantum Order using Magnetic Resonance*
5:24 PM–5:36 PM
Presenter:
Ilija K Nikolov
(Brown University)
Authors:
Ilija K Nikolov
(Brown University)
Rong Cong
(Brown University)
Stephen Carr
(Brown University)
Adrian G Del Maestro
(University of Tennessee)
Chandrasekhar Ramanathan
(Dartmouth College)
Vesna F Mitrovic
(Brown University)
Here, we present results from a multi-modal spectroscopy technique applied to a Mott insulator with strong spin-orbit coupling, showcasing a general probe of emergent quantum order that can be used in other materials. We can distinguish if orbital or magnetic order drives a phase transition by extracting the temperature-dependence of their associated fluctuations. This represents an ideal method for evaluating the distribution of disorder above phase transitions, identifying relevant parameters for “order from disorder” transitions, which are characterized by fluctuations of an order parameter with zero mean.
*This work was supported in part by the US National Science Foundation through Grants OIA 1921199 and DMR 1905532.
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