Dr. Minoru Yamashita, Dr. Takasada Shibauchi and Dr. Yuji Matsuda Thermal-Transport Studies on Two-Dimensional Quantum Spin Liquids ChemPhysChem 13
Gapped and gapless spin excitation, the latter having a long mean free path (ca. 1000 lattice distances), are revealed by thermal-transport studies on two organic insulators showing quantum spin liquid states, namely, κ-(BEDT-TTF)2Cu2(CN)3 and EtMe3Sb[Pd(dmit)2]2 (see picture), respectively. Such a long mean free path demonstrates remarkable coherence of the quantum condensed state. BEDT-TTF=bis(ethylenedithio)tetrathiafulvalene, dmit=1,3-dithiole-2-thione-4,5-dithiolate.
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