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Volumn 39, Issue 3, 2001, Pages 512-518

The quantum antidot electrometer: Direct observation of fractional charge

Author keywords

[No Author keywords available]

Indexed keywords


EID: 0035540197     PISSN: 03744884     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (4)

References (32)
  • 3
    • 0003414482 scopus 로고    scopus 로고
    • Springer, NY
    • For reviews see: The Quantum Hall Effect, 2nd Ed. Edited by R. E. Prange and S. M. Girvin (Springer, NY, 1990); Perspectives in Quantum Hall Effects, Edited by S. Das Sarma and A. Pinczuk (Wiley, NY, 1997); S. M. Girvin, The Quantum Hall Effect, Les Houches Lecture Notes (1998); V. J. Goldman, Physica B 280, 372 (2000).
    • (1990) The Quantum Hall Effect, 2nd Ed.
    • Prange, R.E.1    Girvin, S.M.2
  • 4
    • 0003490204 scopus 로고    scopus 로고
    • Wiley, NY
    • For reviews see: The Quantum Hall Effect, 2nd Ed. Edited by R. E. Prange and S. M. Girvin (Springer, NY, 1990); Perspectives in Quantum Hall Effects, Edited by S. Das Sarma and A. Pinczuk (Wiley, NY, 1997); S. M. Girvin, The Quantum Hall Effect, Les Houches Lecture Notes (1998); V. J. Goldman, Physica B 280, 372 (2000).
    • (1997) Perspectives in Quantum Hall Effects
    • Das Sarma, S.1    Pinczuk, A.2
  • 5
    • 0003414482 scopus 로고    scopus 로고
    • Les Houches Lecture Notes
    • For reviews see: The Quantum Hall Effect, 2nd Ed. Edited by R. E. Prange and S. M. Girvin (Springer, NY, 1990); Perspectives in Quantum Hall Effects, Edited by S. Das Sarma and A. Pinczuk (Wiley, NY, 1997); S. M. Girvin, The Quantum Hall Effect, Les Houches Lecture Notes (1998); V. J. Goldman, Physica B 280, 372 (2000).
    • (1998) The Quantum Hall Effect
    • Girvin, S.M.1
  • 6
    • 0033885835 scopus 로고    scopus 로고
    • For reviews see: The Quantum Hall Effect, 2nd Ed. Edited by R. E. Prange and S. M. Girvin (Springer, NY, 1990); Perspectives in Quantum Hall Effects, Edited by S. Das Sarma and A. Pinczuk (Wiley, NY, 1997); S. M. Girvin, The Quantum Hall Effect, Les Houches Lecture Notes (1998); V. J. Goldman, Physica B 280, 372 (2000).
    • (2000) Physica B , vol.280 , pp. 372
    • Goldman, V.J.1
  • 7
    • 0007324787 scopus 로고    scopus 로고
    • http://www.nobel.se/prize/index.html
  • 15
    • 0030193668 scopus 로고    scopus 로고
    • V. J. Goldman, Surf. Sci. 361/362, 1 (1996); Physica E 1, 15 (1997).
    • (1996) Surf. Sci. , vol.361-362 , pp. 1
    • Goldman, V.J.1
  • 16
    • 0030193668 scopus 로고    scopus 로고
    • V. J. Goldman, Surf. Sci. 361/362, 1 (1996); Physica E 1, 15 (1997).
    • (1997) Physica E , vol.1 , pp. 15
  • 18
    • 0001080950 scopus 로고
    • The excitation spectrum of QH edge channels is gapless, thus excitations of arbitrary charge can be created; e.g., X.-G. Wen, Intl. J. Mod. Phys. B 6, 1711 (1992). These edge excitations are a sort of ID charge density fluctuations in the direction perpendicular to the edge and generally are not Laughlin quasiparticles. A weakly coupled QAD serves as a "charge filter" that selects bulk Laughlin quasiparticles for interedge resonant tunneling.
    • (1992) Intl. J. Mod. Phys. B , vol.6 , pp. 1711
  • 20
    • 0007258869 scopus 로고    scopus 로고
    • note
    • 2 /(dσcursive Greek chicursive Greek chi), where L is the size of 2DES, because of finite diagonal conductivity σcursive Greek chicursive Greek chi at a finite temperature.
  • 22
    • 0005066202 scopus 로고    scopus 로고
    • A small front gate that defines the antidot (as in J. Franklin et al., Surf. Sci. 361/362, 17 (1996)) clearly does not produce a uniform E⊥.
    • (1996) Surf. Sci. , vol.361-362 , pp. 17
    • Franklin, J.1
  • 26
    • 0007255073 scopus 로고    scopus 로고
    • to be published
    • I. Karakurt et al., to be published.
    • Karakurt, I.1
  • 29
    • 0007324788 scopus 로고    scopus 로고
    • note
    • T peaks; we exclude such data from the charge analysis.
  • 31
    • 0034138847 scopus 로고    scopus 로고
    • These our results are in stark disagreement with recent reports of shot noise power experiments in constrictions without antidots, which, interpreted as a measurement of fractional charge, show variations of q by factors of up to three and even six depending on all: v, It, and T. See, e.g., D. Glattli et al., Physica E 6, 22 (2000); T. Griffiths et al., cond-mat/00072664.
    • (2000) Physica E , vol.6 , pp. 22
    • Glattli, D.1
  • 32
    • 0007192228 scopus 로고    scopus 로고
    • cond-mat/00072664
    • These our results are in stark disagreement with recent reports of shot noise power experiments in constrictions without antidots, which, interpreted as a measurement of fractional charge, show variations of q by factors of up to three and even six depending on all: v, It, and T. See, e.g., D. Glattli et al., Physica E 6, 22 (2000); T. Griffiths et al., cond-mat/00072664.
    • Glattli, D.1


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