Anderson localization and delocalization in an electric field.

摘要: The possibility of Anderson localization electrons in a disordered solid d dimensions the presence finite, uniform electric field is discussed. self-consistent diagrammatic theory developed for zero fields generalized to treat case finite field. In one-dimensional systems this shown reproduce exact results Prigodin except some minor differences. For weak fields, or strong disorder, there power-law and stronger mobility edge past which states are extended. higher leads conclusion that not possible fields. Simple arguments indicate independent theory.