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Title: Degeneracy of the 1/8 plateau and antiferromagnetic phases in the Shastry-Sutherland magnet TmB4
Authors: Trinh, Jennifer
Mitra, Sreemanta
Panagopoulos, Christos
Kong, Tai
Canfield, Paul C.
Ramirez, Arthur P.
Keywords: Antiferromagnetic Phases
Shastry-Sutherland Lattice
Issue Date: 2018
Source: Trinh, J., Mitra, S., Panagopoulos, C., Kong, T., Canfield, P. C., & Ramirez, A. P. (2018). Degeneracy of the 1/8 plateau and antiferromagnetic phases in the Shastry-Sutherland magnet TmB4. Physical Review Letters, 121(16), 167203-. doi:10.1103/PhysRevLett.121.167203
Series/Report no.: Physical Review Letters
Abstract: The 1/8 fractional plateau phase (1/8 FPP) in Shastry-Sutherland lattice (SSL) spin systems has been viewed an exemplar of emergence on an Archimedean lattice. Here we explore this phase in the Ising magnet TmB4 using high-resolution specific heat (C) and magnetization (M) in the field-temperature plane. We show that the 1/8 FPP is smoothly connected to the antiferromagnetic phase on ramping the field from H=0. Thus, the 1/8 FPP is not a distinct thermodynamic ground state of TmB4. The implication of these results for Heisenberg spins on the SSL is discussed.
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.121.167203
Schools: School of Physical and Mathematical Sciences 
Rights: © 2018 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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