面内电场对螺旋金属中磁输运的影响
Effect of inplane electric field on magnetotransport in helical metal
摘要：
在具有反常磁电性质的大块绝缘体中，螺旋表面态的存在是固体物理学中一个引人注目的新发展。费米子的线性色散导致一种形式的洛伦兹不变性，费米速度扮演光速（$c$）的角色。在交叉电场和磁场中，单粒子态形成朗道能级，其能量可以通过改变所施加的\emph{in-plane electric}场来改变。简并度保持恒定并由磁场决定。在这封信中，我们研究的性质的磁振荡的电导率和热功率作为一个功能的\emph{in-plane electric}领域。
英文摘要：
The existence of helical surface states in a bulk insulator, with anomalous magneto-electric properties, is a remarkable new development in solid state physics. The linear dispersion of the the fermions leads to a form of Lorentz invariance, with the Fermi velocity playing the role of the velocity of light ($c$). In a crossed electric and magnetic field the single particle states form Landau levels whose energies can be changed by varying the applied \emph{in-plane electric} field. The degeneracy remains constant and is determined by the magnetic field. In the letter we study the nature of the mangeto-oscillation in conductivity and thermopower as a function of the \emph{in-plane electric} field.
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