期刊
PHYSICAL REVIEW B
卷 84, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.125144
关键词
-
资金
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science, and Technology [2011-0025771]
- Korea government (MEST) [2011-0074542]
Topological states of matter challenge the paradigm of symmetry breaking, characterized by gapless boundary modes and protected by the topological property of the ground state. Here, we present compelling evidence for the existence of gapless surface Dirac fermions from transport in Bi2Te3. We observe Sondheimer oscillation in magnetoresistance (MR). This oscillation originates from the quantization of motion due to the confinement of electrons within the surface layer. Based on Sondheimer's transport theory, we determine the thickness of the surface state from the oscillation data. In addition, we uncover the topological nature of the surface state, fitting consistently both the nonoscillatory part of MR and the Hall resistance. The side-jump contribution turns out to dominate around 1 T in Hall resistance while the Berry-curvature effect dominates in 3-4 T.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据