Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays

M. Elhassan, N. Aoki, Y. Aoyagi, C. Prasad, L. Shifren, D. K. Ferry, J. P. Bird, A. Shailos, Y. Ochiai, L. H. Lin, K. Ishibashi

Research output: Contribution to journalArticle

Abstract

We study the properties of the logarithmic variation observed in the temperature-dependent conductance of open quantum-dot arrays. The magnitude of this variation is found to exhibit a well-defined scaling with system size, and is also found to be unaffected by the application of magnetic fields sufficient to break time-reversal symmetry. We suggest that these characteristics are consistent with the logarithmic variation resulting from a confinement-induced enhancement of electron interactions in the arrays. In particular, we note that the size-dependent scaling of this term is similar to that which we would expect for a system whose boundary interactions act to amplify the mutual repulsion of electrons trapped within it.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number24
DOIs
StatePublished - Jan 1 2001

Fingerprint

Electron-electron interactions
Semiconductor quantum dots
electron scattering
quantum dots
Electrons
augmentation
scaling
electrons
Magnetic fields
symmetry
magnetic fields
Temperature
interactions
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays. / Elhassan, M.; Aoki, N.; Aoyagi, Y.; Prasad, C.; Shifren, L.; Ferry, D. K.; Bird, J. P.; Shailos, A.; Ochiai, Y.; Lin, L. H.; Ishibashi, K.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 63, No. 24, 01.01.2001.

Research output: Contribution to journalArticle

Elhassan, M, Aoki, N, Aoyagi, Y, Prasad, C, Shifren, L, Ferry, DK, Bird, JP, Shailos, A, Ochiai, Y, Lin, LH & Ishibashi, K 2001, 'Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays', Physical Review B - Condensed Matter and Materials Physics, vol. 63, no. 24. https://doi.org/10.1103/PhysRevB.63.241302
Elhassan, M. ; Aoki, N. ; Aoyagi, Y. ; Prasad, C. ; Shifren, L. ; Ferry, D. K. ; Bird, J. P. ; Shailos, A. ; Ochiai, Y. ; Lin, L. H. ; Ishibashi, K. / Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays. In: Physical Review B - Condensed Matter and Materials Physics. 2001 ; Vol. 63, No. 24.
@article{515429065b4a4d028086fb43e70b20e3,
title = "Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays",
abstract = "We study the properties of the logarithmic variation observed in the temperature-dependent conductance of open quantum-dot arrays. The magnitude of this variation is found to exhibit a well-defined scaling with system size, and is also found to be unaffected by the application of magnetic fields sufficient to break time-reversal symmetry. We suggest that these characteristics are consistent with the logarithmic variation resulting from a confinement-induced enhancement of electron interactions in the arrays. In particular, we note that the size-dependent scaling of this term is similar to that which we would expect for a system whose boundary interactions act to amplify the mutual repulsion of electrons trapped within it.",
author = "M. Elhassan and N. Aoki and Y. Aoyagi and C. Prasad and L. Shifren and Ferry, {D. K.} and Bird, {J. P.} and A. Shailos and Y. Ochiai and Lin, {L. H.} and K. Ishibashi",
year = "2001",
month = "1",
day = "1",
doi = "10.1103/PhysRevB.63.241302",
language = "English (US)",
volume = "63",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "24",

}

TY - JOUR

T1 - Confinement-induced enhancement of electron-electron interactions in open quantum-dot arrays

AU - Elhassan, M.

AU - Aoki, N.

AU - Aoyagi, Y.

AU - Prasad, C.

AU - Shifren, L.

AU - Ferry, D. K.

AU - Bird, J. P.

AU - Shailos, A.

AU - Ochiai, Y.

AU - Lin, L. H.

AU - Ishibashi, K.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - We study the properties of the logarithmic variation observed in the temperature-dependent conductance of open quantum-dot arrays. The magnitude of this variation is found to exhibit a well-defined scaling with system size, and is also found to be unaffected by the application of magnetic fields sufficient to break time-reversal symmetry. We suggest that these characteristics are consistent with the logarithmic variation resulting from a confinement-induced enhancement of electron interactions in the arrays. In particular, we note that the size-dependent scaling of this term is similar to that which we would expect for a system whose boundary interactions act to amplify the mutual repulsion of electrons trapped within it.

AB - We study the properties of the logarithmic variation observed in the temperature-dependent conductance of open quantum-dot arrays. The magnitude of this variation is found to exhibit a well-defined scaling with system size, and is also found to be unaffected by the application of magnetic fields sufficient to break time-reversal symmetry. We suggest that these characteristics are consistent with the logarithmic variation resulting from a confinement-induced enhancement of electron interactions in the arrays. In particular, we note that the size-dependent scaling of this term is similar to that which we would expect for a system whose boundary interactions act to amplify the mutual repulsion of electrons trapped within it.

UR - http://www.scopus.com/inward/record.url?scp=85038274035&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038274035&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.63.241302

DO - 10.1103/PhysRevB.63.241302

M3 - Article

AN - SCOPUS:85038274035

VL - 63

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 24

ER -