176 citations · 453 across the 18 of their papers we have counts for
18 papers
Power-Law Suppression of Phonon Thermal Transport by Magnetic Excitations in a Molecular Quantum Spin Liquid
S. Fujiyama, K. Ueda, Y. Otsuka
We present large-scale ab initio phonon calculations for the molecular quantum spin liquid X[Pd(dmit)2]2. An unusually low average phonon velocity ( 700 {m/s}) and optical modes be…
Quantum Phase Transition of Organic Spin Liquid Tuned by Mixing Counterions
K. Ueda, S. Fujiyama, R. Kato
We found a plateau in the magnitude of the isolated magnetic moments as a function of the anisotropy of the transfer integral (t'/t) in the gapless quantum spin liquid (QSL) phase…
Role of hydrogen bonding in charge-ordered organic conductor -(BEDT-TTF)I probed by I nuclear quadrupole resonance
T. Kobayashi, Y. Kato, H. Taniguchi +3
We present I nuclear quadrupole resonance spectra and nuclear relaxation of -(BEDT-TTF)I that undergoes a charge-ordering transition. Only one of the two I a…
A Discrepancy in Thermal Conductivity Measurement Data of Quantum Spin Liquid '-EtMeSb[Pd(dmit)] (dmit = 1,3-Dithiol-2-thione-4,5-dithiolate)
Reizo Kato, Masashi Uebe, Shigeki Fujiyama +1
A molecular Mott insulator '-EtMeSb[Pd(dmit)] is a quantum spin liquid candidate. In 2010, it was reported that thermal conductivity of '-EtMeSb[Pd(dmit)]…
Large Diamagnetism and Electromagnetic Duality in Two-dimensional Dirac Electron System
S. Fujiyama, H. Maebashi, N. Tajima +4
A Dirac electron system in solids mimics a relativistic quantum physics that is compatible with Maxwell's equations, by which we anticipate unified electromagnetic responses. We fi…
Fragmented Electronic Spins with Quantum Fluctuations in Organic Mott Insulators near Quantum Spin Liquid
Shigeki Fujiyama, Reizo Kato
Magnetic structures of organic Mott insulators X[Pd(dmit)2]2 (X=Me4P, Me4Sb), of which electronic states are located near quantum spin liquid (X=EtMe3Sb), are demonstrated by 13C N…