Conductance fluctuations in quantum wires
关键词:
摘要: Conductance fluctuations in quantum wires are calculated numerically by a scattering-matrix formalism with Landauer's conductance formula. The not universal because they strongly dependent on the system length. When many subbands occupied, there appears length region (called region) longer than mean free path and shorter localization where almost independent of A crossover from one to two dimensions occurs when broadening one-dimensional exceeds their separations. In presence weak magnetic field, becomes wider reduced. strong fields, nearly quantized become negligibly small due formation edge states an extremely long path.
harvard.edu
sci-hub.se 参考文章(67)
Sean Washburn, Richard A. Webb, Aharonov-Bohm effect in normal metal quantum coherence and transport Advances in Physics. ,vol. 35, pp. 375- 422 ,(1986) , 10.1080/00018738600101921
C. P. Umbach, S. Washburn, R. B. Laibowitz, R. A. Webb, Magnetoresistance of Small, Quasi-One-Dimensional, Normal-Metal Rings and Lines Physical Review B. ,vol. 30, pp. 4048- 4051 ,(1984) , 10.1103/PHYSREVB.30.4048
Yuval Gefen, Yoseph Imry, M. Ya. Azbel, Quantum Oscillations and the Aharonov-Bohm Effect for Parallel Resistors Physical Review Letters. ,vol. 52, pp. 129- 132 ,(1984) , 10.1103/PHYSREVLETT.52.129
M. Büttiker, Y. Imry, M. Ya. Azbel, Quantum oscillations in one-dimensional normal-metal rings Physical Review A. ,vol. 30, pp. 1982- 1989 ,(1984) , 10.1103/PHYSREVA.30.1982
M. Büttiker, Y. Imry, R. Landauer, S. Pinhas, Generalized many-channel conductance formula with application to small rings. Physical Review B. ,vol. 31, pp. 6207- 6215 ,(1985) , 10.1103/PHYSREVB.31.6207
R. A. Webb, S. Washburn, C. P. Umbach, R. B. Laibowitz, Observation of h/e Aharonov-Bohm oscillations in normal-metal rings. Physical Review Letters. ,vol. 54, pp. 2696- 2699 ,(1985) , 10.1103/PHYSREVLETT.54.2696
G. Timp, A. M. Chang, P. Mankiewich, R. Behringer, J. E. Cunningham, T. Y. Chang, R. E. Howard, Quantum transport in an electron-wave guide. Physical Review Letters. ,vol. 59, pp. 732- 735 ,(1987) , 10.1103/PHYSREVLETT.59.732
A.M. Chang, G. Timp, T.Y. Chang, J.E. Cunningham, P.M. Mankiewich, R.E. Behringer, R.E. Howard, Deviation of the quantum hall effect from exact quantization in narrow GaAs-AlxGa1−xAs heterostructure devices Solid State Communications. ,vol. 67, pp. 769- 772 ,(1988) , 10.1016/0038-1098(88)90021-X
M. L. Roukes, A. Scherer, S. J. Allen, H. G. Craighead, R. M. Ruthen, E. D. Beebe, J. P. Harbison, Quenching of the Hall effect in a one-dimensional wire. Physical Review Letters. ,vol. 59, pp. 3011- 3014 ,(1987) , 10.1103/PHYSREVLETT.59.3011
CJB Ford, TJ Thornton, R Newbury, M Pepper, H Ahmed, DC Peacock, DA Ritchie, JEF Frost, GAC Jones, None, Vanishing hall voltage in a quasi-one-dimensional GaAs-AlxGa1-xAs heterojunction Physical Review B. ,vol. 38, pp. 8518- 8521 ,(1988) , 10.1103/PHYSREVB.38.8518