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Differential conductance oscillations in asymmetric quantum point contacts

Publication ,  Journal Article
Zhang, H; Wu, PM; Chang, AM
Published in: Physical Review B - Condensed Matter and Materials Physics
May 29, 2015

Small differential conductance oscillations as a function of source-drain bias are observed and systematically studied in an asymmetric quantum point contact. These oscillations become significantly suppressed in a small in-plane magnetic field (∼0.7 T) or at higher temperatures (∼800 mK). Qualitatively, their temperature evolution can be simulated numerically based on smearing of the Fermi distribution, whereas features near zero bias cannot. Single-particle scenarios are unsatisfactory in accounting for the oscillations, suggesting that they are likely caused by electron- and spin-correlation effects.

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Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

May 29, 2015

Volume

91

Issue

19

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Zhang, H., Wu, P. M., & Chang, A. M. (2015). Differential conductance oscillations in asymmetric quantum point contacts. Physical Review B - Condensed Matter and Materials Physics, 91(19). https://doi.org/10.1103/PhysRevB.91.195150
Zhang, H., P. M. Wu, and A. M. Chang. “Differential conductance oscillations in asymmetric quantum point contacts.” Physical Review B - Condensed Matter and Materials Physics 91, no. 19 (May 29, 2015). https://doi.org/10.1103/PhysRevB.91.195150.
Zhang H, Wu PM, Chang AM. Differential conductance oscillations in asymmetric quantum point contacts. Physical Review B - Condensed Matter and Materials Physics. 2015 May 29;91(19).
Zhang, H., et al. “Differential conductance oscillations in asymmetric quantum point contacts.” Physical Review B - Condensed Matter and Materials Physics, vol. 91, no. 19, May 2015. Scopus, doi:10.1103/PhysRevB.91.195150.
Zhang H, Wu PM, Chang AM. Differential conductance oscillations in asymmetric quantum point contacts. Physical Review B - Condensed Matter and Materials Physics. 2015 May 29;91(19).

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

May 29, 2015

Volume

91

Issue

19

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences