论文标题
量子旋转液体$β$' - etme $ _3 $ sb [pd（dmit）$ _ 2 $] $ _ 2 $（DMIT = 1,3-二硫代二硫代-4,4,5-二硫代）的量子电导率测量数据的差异差异
A Discrepancy in Thermal Conductivity Measurement Data of Quantum Spin Liquid $β$'-EtMe$_3$Sb[Pd(dmit)$_2$]$_2$ (dmit = 1,3-Dithiol-2-thione-4,5-dithiolate)
论文作者
论文摘要
分子莫特绝缘子$β$' - etme $ _3 $ sb [pd（dmit）$ _ 2 $] $ _ 2 $是量子旋转液体候选者。据报道，据报道，$β$'-ETME $ _3 $ sb [pd（dmit）$ _ 2 $] $ _ 2 $的热导率的特征是其较大的价值和无间隙行为（有限的温度线性术语）。然而，在2019年，另外两个研究小组报告了相反的数据（值较小，温度线性术语为小得多）和热导率测量数据的差异是关于量子自旋液体基态的严重问题。最近，提议冷却速率是差异的起源。我们检查了冷却速率对电阻率，低温晶体结构和$^{13} $ C-NMR测量的影响，找不到任何明显的冷却速率依赖性。
A molecular Mott insulator $β$'-EtMe$_3$Sb[Pd(dmit)$_2$]$_2$ is a quantum spin liquid candidate. In 2010, it was reported that thermal conductivity of $β$'-EtMe$_3$Sb[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 $^{13}$C-NMR measurements and could not find any significant cooling rate dependence.
