Journal
CRYSTALS
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/cryst12010102
Keywords
molecular conductors; quantum spin liquid; thermal conductivity; cooling rate; electrical resistivity; low-temperature crystal structure; C-13-NMR
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This study examined the effects of cooling rate on electrical resistivity, low-temperature crystal structure, and C-13-NMR measurements, and found no significant cooling rate dependence.
A molecular Mott insulator beta '-EtMe3Sb[Pd(dmit)(2)](2) is a quantum spin liquid candidate. In 2010, it was reported that thermal conductivity of beta '-EtMe3Sb[Pd(dmit)(2)](2) is characterized by its large value and gapless behavior (a finite temperature-linear term). In 2019, however, two other research groups reported opposite data (much smaller value and a vanishingly small temperature-linear term) and the discrepancy in the thermal conductivity measurement data emerges as a serious problem concerning the ground state of the quantum spin liquid. Recently, the cooling rate was proposed to be an origin of the discrepancy. We examined effects of the cooling rate on electrical resistivity, low-temperature crystal structure, and C-13-NMR measurements and could not find any significant cooling rate dependence.
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