Field induced positional shift of Bloch electrons and its dynamical implications

We derive the field correction to the Berry curvature of Bloch electrons, which can be traced back to a positional shift due to the interband mixing induced by external electromagnetic fields. The resulting semiclassical dynamics is accurate to second order in the fields, in the same form as before,...

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Veröffentlicht in:	Physical review letters 2014-04, Vol.112 (16), p.166601-166601, Article 166601
Hauptverfasser:	Gao, Yang, Yang, Shengyuan A, Niu, Qian
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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