Berry’s phase and the anomalous velocity of Bloch wavepackets

• Main Author: Chong, Yidong
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/101040; http://hdl.handle.net/10220/18342
• Institution: Nanyang Technological University

The semiclassical equations of motion for a Bloch electron include an anomalous velocity term analogous to a k -space “Lorentz force,” with the Berry connection playing the role of a vector potential. By examining the adiabatic evolution of Bloch states in a monotonically increasing vector potential...