Pressure-Tuned Exchange Coupling of a Quantum Spin Liquid in the Molecular Triangular Lattice κ-(ET)_{2}Ag_{2}(CN)_{3}.

  title={Pressure-Tuned Exchange Coupling of a Quantum Spin Liquid in the Molecular Triangular Lattice $\kappa$-(ET)\_\{2\}Ag\_\{2\}(CN)\_\{3\}.},
  author={Yasuhiro Shimizu and Takaaki Hiramatsu and Mitsuhiko Maesato and Akihiro Otsuka and Hideki Yamochi and Akihiro Ono and Masayuki Itoh and Makoto Yoshida and Masashi Takigawa and Yukihiro Yoshida and Gunzi Saito},
  journal={Physical review letters},
  volume={117 10},
The effects of pressure on a quantum spin liquid are investigated in an organic Mott insulator κ-(ET)_{2}Ag_{2}(CN)_{3} with a spin-1/2 triangular lattice. The application of negative chemical pressure to κ-(ET)_{2}Cu_{2}(CN)_{3}, which is a well-known sister Mott insulator, allows for extensive tuning of antiferromagnetic exchange coupling, with J/k_{B}=175-310  K, under hydrostatic pressure. Based on ^{13}C nuclear magnetic resonance measurements under pressure, we uncover universal scaling… 

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