Metallic Phase and Temperature Dependence of the ν=0 Quantum Hall State in Bilayer Graphene
Metallic Phase and Temperature Dependence of the ν=0 Quantum Hall State in Bilayer Graphene
复制标题
双层石墨烯中 δ=0 量子霍尔态的金属相和温度依赖性
DOI：
10.1103/physrevlett.122.097701
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发表时间：
2019
影响因子：
8.6
通讯作者：
Zhu, Jun
中科院分区：
文献类型：
--
作者：
Li, Jing;Fu, Hailong;Yin, Zhenxi;Watanabe, Kenji;Taniguchi, Takashi;Zhu, Jun
双层石墨烯的量子霍尔态是实现具有各种对称性破缺的多体基态的一个很好的平台。在这里，我们报告的实验观察到的一个以前未报道的金属相。金属相存在于先前确定的层极化状态在大的横向电场和倾斜的反铁磁状态在小的横向电场之间的相空间。我们还报告了量子自旋霍尔态的温度依赖性研究。复杂的非单调行为揭示了伴随的体积和边缘传导和激发。这些结果提供了一个及时的实验更新，以了解丰富的物理状态。
Thequantum Hall state of bilayer graphene is a fertile playground to realize many-body ground states with various broken symmetries. Here we report the experimental observations of a previously unreported metallic phase. The metallic phase resides in the phase space between the previously identified layer polarized state at large transverse electric field and the canted antiferromagnetic state at small transverse electric field. We also report temperature dependence studies of the quantum spin Hall state of. Complex nonmonotonic behavior reveals concomitant bulk and edge conductions and excitations. These results provide a timely experimental update to understand the rich physics of thestate.