1T-TaS 作为一种量子自旋液体。
1T-TaS as a quantum spin liquid.
机构信息
Department of Physics, Hong Kong University of Science and Technology, Hong Kong, China.
Department of Physics, Massachusetts Institute of Technology, Cambridge MA 02139
出版信息
Proc Natl Acad Sci U S A. 2017 Jul 3;114(27):6996-7000. doi: 10.1073/pnas.1706769114. Epub 2017 Jun 20.
Abstract
1T-TaS is unique among transition metal dichalcogenides in that it is understood to be a correlation-driven insulator, where the unpaired electron in a 13-site cluster experiences enough correlation to form a Mott insulator. We argue, based on existing data, that this well-known material should be considered as a quantum spin liquid, either a fully gapped [Formula: see text] spin liquid or a Dirac spin liquid. We discuss the exotic states that emerge upon doping and propose further experimental probes.
摘要
1T-TaS 在过渡金属二卤族化合物中是独一无二的，因为它被认为是一种关联驱动的绝缘体，在 13 位点簇中的不成对电子经历足够的关联以形成莫特绝缘体。我们基于现有数据提出，这种众所周知的材料应该被视为量子自旋液体，要么是完全能隙的[Formula: see text]自旋液体，要么是狄拉克自旋液体。我们讨论了掺杂后出现的奇异态，并提出了进一步的实验探测方法。
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