Manifestation of spin nematic ordering in the spin-1 chain system

Article

关键词: ONE-DIMENSIONAL S;    HALDANE-GAP;    MAGNETIC EXCITATIONS;    TRANSITION;    PHASE;    MODEL;    Y2BANIO5;    STATE;   

DOI  :  10.1103/PhysRevB.107.134421

来源: SCIE

【 摘 要 】

Spin-1 chain material is considered. Recently, it was predicted that the spin nematic ordered phase can be realized due to the spin-elastic coupling. In this study we show that the appearance of the spin nematic ordering and phase transitions to such ordered states can be studied using magneto-acoustic experiments. One can observe such phases and phase transitions considering relative changes of the velocity of sound (related to the changes of the elastic modulus of the crystal) as a function of temperature and the external magnetic field. It is shown that those relative changes are proportional to the spin quadrupole susceptibility of the system. The results are obtained using the exact Bethe ansatz solution and Quantum Monte Carlo simulations for several typical values of the biquadratic spin-spin exchange interaction and for various values of the spin-elastic coupling and elastic modules.

【 授权许可】

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