Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session A24: 2D Frustrated Spin Systems: Shastry Sutherland and Bipartite Lattices
8:00 AM–11:00 AM,
Monday, March 5, 2018
LACC Room: 403A
Sponsoring Units: GMAG DMP
Chair: Vivien Zapf, Los Alamos National Laboratory
Abstract: A24.00003 : Raman Scattering and Dilatometry of Frustrated Spin Dimer Compound SrCu2(BO3)2 in High Magnetic Fields to 45T*
8:48 AM–9:00 AM
(Florida A&M Univ.)
(HFML, Radboud Univ.)
(HFML, Radboud Univ.)
(BIMR, McMaster Univ.)
(Université Pierre et Marie Curie)
(CINaM/CNRS, Aix-Marseille Univ.)
SrCu2(BO3)2 is a quasi-two dimensional orthogonal spin dimer system with a spin singlet ground state. It is a realization of the Shastry Sutherland model, and exhibits a sequence of magnetization plateaux at magnetic fields in excess of 20 T, i.e. high enough to close the low temperature spin gap . The unique behavior of this quantum spin liquid results from the interplay between geometrical frustration and strong quantum fluctuations. We will discuss the origin and characteristics of the strong spin-lattice coupling in SrCu2(BO3)2, as learned from experimetal studies of Raman scattering, thermal expansion, and magnetostriction performed in high DC magnetic fields to 45T. The interpretation of experimental results is supported by a theoretical analysis and prediction of active Raman modes that include the so-called panthograph mode .
 M. Jaime, et al. Proc. Natl. Acad. Sci. 109, 12407 (2012).
 G. Radtke et al., Proc. Natl. Acad. Sci. 112, 1971 (2015).
*Work at the National High Magnetic Field Laboratory was supported by National Science Foundation Cooperative Agreement No. DMR-1157490, the State of Florida and the United States Department of Energy.
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