BALLISTIC CONDUCTANCE FLUCTUATIONS IN SHAPE SPACE

作者: I. H. Chan , R. M. Clarke , C. M. Marcus , K. Campman , A. C. Gossard

DOI: 10.1103/PHYSREVLETT.74.3876

关键词:

摘要: Ballistic conductance fluctuations were measured in a GaAs quantum dot as function of shape distortion and magnetic field. Shape provides novel source creates an effective “ensemble dots,” allowing statistics to be studied at fixed Continuous changes fluctuation due breaking time-reversal symmetry are seen about zero Throughout, distributions appear Gaussian. The power spectrum appears exponential over three decades.

参考文章(23)
R. M. Clarke, I. H. Chan, C. M. Marcus, C. I. Duruöz, J. S. Harris, K. Campman, A. C. Gossard, TEMPERATURE DEPENDENCE OF PHASE BREAKING IN BALLISTIC QUANTUM DOTS Physical Review B. ,vol. 52, pp. 2656- 2659 ,(1995) , 10.1103/PHYSREVB.52.2656
Rodolfo A. Jalabert, Harold U. Baranger, A. Douglas Stone, Conductance fluctuations in the ballistic regime: A probe of quantum chaos? Physical Review Letters. ,vol. 65, pp. 2442- 2445 ,(1990) , 10.1103/PHYSREVLETT.65.2442
C. M. Marcus, A. J. Rimberg, R. M. Westervelt, P. F. Hopkins, A. C. Gossard, Conductance fluctuations and chaotic scattering in ballistic microstructures. Physical Review Letters. ,vol. 69, pp. 506- 509 ,(1992) , 10.1103/PHYSREVLETT.69.506
M.W. Keller, O. Millo, A. Mittal, D.E. Prober, R.N. Sacks, Magnetotransport in a chaotic scattering cavity with tunable electron density Surface Science. ,vol. 305, pp. 501- 506 ,(1994) , 10.1016/0039-6028(94)90943-1
C. W. J. Beenakker, Universality in the random-matrix theory of quantum transport Physical Review Letters. ,vol. 70, pp. 1155- 1158 ,(1993) , 10.1103/PHYSREVLETT.70.1155
Hans A. Weidenmüller, Ericson fluctuations versus conductance fluctuations: Nuclear Physics A. ,vol. 518, pp. 1- 12 ,(1990) , 10.1016/0375-9474(90)90531-P
A. M. Chang, H. U. Baranger, L. N. Pfeiffer, K. W. West, Weak localization in chaotic versus nonchaotic cavities: A striking difference in the line shape. Physical Review Letters. ,vol. 73, pp. 2111- 2114 ,(1994) , 10.1103/PHYSREVLETT.73.2111
V. N. Prigodin, K. B. Efetov, S. Iida, Statistics of conductance fluctuations in quantum dots. Physical Review Letters. ,vol. 71, pp. 1230- 1233 ,(1993) , 10.1103/PHYSREVLETT.71.1230
R. A Jalabert, J.-L Pichard, C. W. J Beenakker, Universal quantum signatures of chaos in ballistic transport EPL. ,vol. 27, pp. 255- 260 ,(1994) , 10.1209/0295-5075/27/4/001
Harold U. Baranger, Pier A. Mello, Mesoscopic transport through chaotic cavities: A random S -matrix theory approach Physical Review Letters. ,vol. 73, pp. 142- 145 ,(1994) , 10.1103/PHYSREVLETT.73.142