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 T55: Correlated Electron Materials I
11:30 AM–2:30 PM,
Thursday, March 9, 2023
Room: Room 305
Sponsoring
Unit:
GMAG
Chair: Adam Aczel, Oak Ridge Nat'l Lab
Abstract: T55.00006 : Electron spin resonance measurements of spin liquid candidate TbInO3 with superconducting resonators*
12:30 PM–12:42 PM
Presenter:
Sandesh S Kalantre
(Stanford University)
Authors:
Sandesh S Kalantre
(Stanford University)
Johanna Nordlander
(Harvard)
Margaret A Anderson
(Harvard University)
Julia A Mundy
(Harvard University)
David Goldhaber-Gordon
(Stanford Univ)
TbInO3 is purported to host a quantum spin liquid ground state arising from frustrated anti-ferromagnetic spins lying on a triangular lattice. The magnetic exchange interactions between the Tb moments and the frustration from being on a triangular lattice prevent long-range ordering down to temperatures well below the interaction strength. Spin susceptibility measurements on bulk crystals have measured fluctuating spins down to 100 mK. However, the nature of the magnetic ground state of TbInO3 grown in thin-film form is unknown. In this work, we study thin films of TbInO3 epitaxially grown on yttria stabilized zirconia (YSZ) substrates.
To probe the Tb moments, we make use of microfabricated superconducting resonators designed to concentrate a microwave-frequency magnetic field in a micron-scale region. These resonators are well-suited for probing spin excitations in thin films containing magnetic moments, while being insensitive to dilute spins present in bulk substrates such as YSZ. We place TbInO3/YSZ films on top of the resonators in a flip-chip geometry. We report the dependence of resonator dissipation rate as a function of an in-plane magnetic field up to 0.5 T and temperature from 25 mK to 1 K.
*We acknowledge funding from AFOSR MURI grant no. FA9550-21-1-0429.
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