Direct measurement of the coherence length of edge states in the integer quantum Hall regime.
作者： Preden Roulleau , F. Portier , P. Roche , A. Cavanna , G. Faini
DOI: 10.1103/PHYSREVLETT.100.126802
关键词:
摘要: We have determined the finite temperature coherence length of edge states in integer quantum Hall effect regime. This was realized by measuring visibility electronic Mach-Zehnder interferometers different sizes, at filling factor 2. The shows an exponential decay with temperature. characteristic scale is found inversely proportional to interferometer arm, allowing one define a l_(phi). variations l_(phi) magnetic field are same for all samples, maximum located upper end plateau. Our results provide first accurate determination
arxiv.org
harvard.edu
sci-hub.se 参考文章(19)
Thierry Martin, Shechao Feng, Suppression of scattering in electron transport in mesoscopic quantum Hall systems. Physical Review Letters. ,vol. 64, pp. 1971- 1974 ,(1990) , 10.1103/PHYSREVLETT.64.1971
Yang Ji, Yunchul Chung, D. Sprinzak, M. Heiblum, D. Mahalu, Hadas Shtrikman, An electronic Mach|[ndash]|Zehnder interferometer Nature. ,vol. 422, pp. 415- ,(2003) , 10.1038/NATURE01503
P. Samuelsson, E. V. Sukhorukov, M. Büttiker, Two-particle Aharonov-Bohm effect and entanglement in the electronic Hanbury Brown-Twiss setup. Physical Review Letters. ,vol. 92, pp. 026805- 026805 ,(2004) , 10.1103/PHYSREVLETT.92.026805
L. V. Litvin, H.-P. Tranitz, W. Wegscheider, C. Strunk, Decoherence and single electron charging in an electronic Mach-Zehnder interferometer Physical Review B. ,vol. 75, pp. 033315- ,(2007) , 10.1103/PHYSREVB.75.033315
I. Neder, N. Ofek, Y. Chung, M. Heiblum, D. Mahalu, V. Umansky, Interference between two indistinguishable electrons from independent sources Nature. ,vol. 448, pp. 333- 337 ,(2007) , 10.1038/NATURE05955
Preden Roulleau, F. Portier, D. C. Glattli, P. Roche, A. Cavanna, G. Faini, U. Gennser, D. Mailly, Finite bias visibility of the electronic Mach-Zehnder interferometer Physical Review B. ,vol. 76, pp. 161309- ,(2007) , 10.1103/PHYSREVB.76.161309
B. W. Alphenaar, P. L. McEuen, R. G. Wheeler, R. N. Sacks, Selective equilibration among the current-carrying states in the quantum Hall regime Physical Review Letters. ,vol. 64, pp. 677- 680 ,(1990) , 10.1103/PHYSREVLETT.64.677
T. Machida, H. Hirai, S. Komiyama, T. Osada, Y. Shiraki, Experimental studies of the phase coherence in the quantum Hall effect regime Solid State Communications. ,vol. 103, pp. 441- 445 ,(1997) , 10.1016/S0038-1098(97)00223-8
B. J. van Wees, L. P. Kouwenhoven, C. J. P. M. Harmans, J. G. Williamson, C. E. Timmering, M. E. I. Broekaart, C. T. Foxon, J. J. Harris, Observation of zero-dimensional states in a one-dimensional electron interferometer. Physical Review Letters. ,vol. 62, pp. 2523- 2526 ,(1989) , 10.1103/PHYSREVLETT.62.2523
J. P. Bird, K. Ishibashi, M. Stopa, Y. Aoyagi, T. Sugano, Coulomb blockade of the Aharonov-Bohm effect in GaAs/AlxGa1-xAs quantum dots. Physical Review B. ,vol. 50, pp. 14983- 14990 ,(1994) , 10.1103/PHYSREVB.50.14983