Quantum Phases of SrCu_{2}(BO_{3})_{2} from High-Pressure Thermodynamics.

@article{Guo2020QuantumPO,
  title={Quantum Phases of SrCu_\{2\}(BO_\{3\})_\{2\} from High-Pressure Thermodynamics.},
  author={J. Guo and G. Sun and B. Zhao and L. Wang and Wenshan Hong and V. Sidorov and N. Ma and Q. Wu and S. Li and Z. Meng and A. Sandvik and L. Sun},
  journal={Physical review letters},
  year={2020},
  volume={124 20},
  pages={
          206602
        }
}
  • J. Guo, G. Sun, +9 authors L. Sun
  • Published 2020
  • Physics, Medicine
  • Physical review letters
  • We report heat capacity measurements of SrCu_{2}(BO_{3})_{2} under high pressure along with simulations of relevant quantum spin models and map out the (P,T) phase diagram of the material. We find a first-order quantum phase transition between the low-pressure quantum dimer paramagnet and a phase with signatures of a plaquette-singlet state below T=2  K. At higher pressures, we observe a transition into a previously unknown antiferromagnetic state below 4 K. Our findings can be explained within… CONTINUE READING

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