Change of microscopic tunneling on a macroscopic time scale: Current surge model

Autor:	Anjali Singh, Danhong Huang, D. A. Cardimona
Rok vydání:	2000
Předmět:	Physics Hysteresis Condensed matter physics law Direct current Ripple General Physics and Astronomy Charge density Current (fluid) Alternating current Instability Quantum tunnelling law.invention
Zdroj:	Journal of Applied Physics. 87:2427-2430
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.372196
Popis:	The current surge model is proposed to calculate the tunneling current in multiple quantum well structures in the presence of a slow time-dependent electric field. The microscopic origin of a zero-bias residual current observed and reported previously [A. Singh and D. A. Cardimona, Opt. Eng. (Bellingham) 38, 1424 (1999)] is explored. The mystery of the observation of a microscopic tunneling change on a macroscopic time scale is uncovered, and an involvement of a very slow physical process is shown. Some new features, such as a current “ripple,” a current instability, a current hysteresis, and a current “arch,” are predicted and confirmed experimentally.
Databáze:	OpenAIRE
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