Gapless Spin Excitations in the Field-Induced Quantum Spin Liquid Phase of alpha-RuCl3
Gapless Spin Excitations in the Field-Induced Quantum Spin Liquid Phase of alpha-RuCl3
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α-RuCl3 场致量子自旋液相中的无间隙自旋激发
DOI：
10.1103/physrevlett.119.227208
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发表时间：
2017
影响因子：
8.6
通讯作者：
Yu Weiqiang
中科院分区：
文献类型：
--
作者：
Zheng Jiacheng;Ran Kejing;Li Tianrun;Wang Jinghui;Wang Pengshuai;Liu Bin;Liu Zheng-Xin;Norm;B.;Wen Jinsheng;Yu Weiqiang
是观测Kitaev量子自旋液体(QSL)相关物理的首选候选材料。通过磁化率、比热和核磁共振测量，我们证明了在平面上施加7.5T的磁场下，它经历了到QSL的量子相变。我们进一步证明了这种高场QSL相在16T的磁场范围内具有无间隙的自旋激发。这一非常非常规的结果在Heisenberg或Kitaev磁体中都是未知的，它为建立的物理提供了至关重要的见解。
is a leading candidate material for the observation of physics related to the Kitaev quantum spin liquid (QSL). By combined susceptibility, specific-heat, and nuclear-magnetic-resonance measurements, we demonstrate thatundergoes a quantum phase transition to a QSL in a magnetic field of 7.5 T applied in theplane. We show further that this high-field QSL phase has gapless spin excitations over a field range up to 16 T. This highly unconventional result, unknown in either Heisenberg or Kitaev magnets, offers insight essential to establishing the physics of.