Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session R61: Towards realizing Kitaev physics and other topological phases
8:00 AM–11:00 AM,
Thursday, March 5, 2020
Room: Mile High Ballroom 4B
Sponsoring
Units:
DMP DCMP
Chair: Natalia Perkins, University of Minnesota
Abstract: R61.00006 : Raman Scattering Investigation of a New Candidate for a Quantum Spin Liquid, the Magnetic Insulator, Ba3Ir4O10*
Presenter:
Aaron Sokolik
(University of Colorado, Boulder)
Authors:
Aaron Sokolik
(University of Colorado, Boulder)
Nick Pellatz
(University of Colorado, Boulder)
Gang Cao
(University of Colorado, Boulder)
Dmitry Reznik
(University of Colorado, Boulder)
The insulator Ba3Ir4O10 is a new candidate for a frustrated quantum spin liquid, which was reported to have a stabilized quantum spin liquid state down to 0.2 K. The frustration parameter of around 3800 is extremely high. The spin liquid is also extraordinarily sensitive to changes in the lattice parameters as shown with the effects from strontium doping. The replacement of approximately 2% of barium with strontium readily lifts the frustration parameter and this doped material has long-range order from an antiferromagnetic transition at 130 K. Raman spectroscopy results show that both materials are also strongly anisotropic. We will present a comparison of the results of Raman scattering experiments on Sr-doped and undoped samples of Ba3Ir4O10.
*The work of A.S. N.P., and D.R. was supported by the NSF under Grants No. DMR-1410111 and DMR-1903888
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