Aharonov-Bohm oscillations in quantum dots: precise departures from h/e periodicity

J. P. Bird; M. Stopa; R. P. Taylor; R. Newbury; Y. Aoyagi; T. Sugano

doi:10.1006/spmi.1996.0260

Aharonov-Bohm oscillations in quantum dots: precise departures from h/e periodicity

J. P. Bird
, M. Stopa
, R. P. Taylor
, R. Newbury
, Y. Aoyagi
, T. Sugano

Department of Electrical Engineering

University at Buffalo

Nanoelectronics Materials Lab

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We investigate precise departures from h/e periodicity in Aharonov-Bohm oscillations observed in the low temperature magneto-resistance of quantum dots. Period-doubling is apparent over well defined ranges of magnetic field, outside of which the oscillations revert to their single period. The precise nature of the doubling is reflected in a Fourier analysis of the oscillations, and is also confirmed by the results of self-consistent calculations. While the origin of this effect remains unclear we discuss several possible mechanisms, and also briefly consider the conditions necessary for observation of frequency-doubled oscillations.

Original language	English
Pages (from-to)	57-63
Number of pages	7
Journal	Superlattices and Microstructures
Volume	22
Issue number	1
DOIs	https://doi.org/10.1006/spmi.1996.0260
State	Published - 1997

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10.1006/spmi.1996.0260

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abstract = "We investigate precise departures from h/e periodicity in Aharonov-Bohm oscillations observed in the low temperature magneto-resistance of quantum dots. Period-doubling is apparent over well defined ranges of magnetic field, outside of which the oscillations revert to their single period. The precise nature of the doubling is reflected in a Fourier analysis of the oscillations, and is also confirmed by the results of self-consistent calculations. While the origin of this effect remains unclear we discuss several possible mechanisms, and also briefly consider the conditions necessary for observation of frequency-doubled oscillations.",

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AU - Bird, J. P.

AU - Stopa, M.

AU - Taylor, R. P.

AU - Newbury, R.

AU - Aoyagi, Y.

AU - Sugano, T.

PY - 1997

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N2 - We investigate precise departures from h/e periodicity in Aharonov-Bohm oscillations observed in the low temperature magneto-resistance of quantum dots. Period-doubling is apparent over well defined ranges of magnetic field, outside of which the oscillations revert to their single period. The precise nature of the doubling is reflected in a Fourier analysis of the oscillations, and is also confirmed by the results of self-consistent calculations. While the origin of this effect remains unclear we discuss several possible mechanisms, and also briefly consider the conditions necessary for observation of frequency-doubled oscillations.

AB - We investigate precise departures from h/e periodicity in Aharonov-Bohm oscillations observed in the low temperature magneto-resistance of quantum dots. Period-doubling is apparent over well defined ranges of magnetic field, outside of which the oscillations revert to their single period. The precise nature of the doubling is reflected in a Fourier analysis of the oscillations, and is also confirmed by the results of self-consistent calculations. While the origin of this effect remains unclear we discuss several possible mechanisms, and also briefly consider the conditions necessary for observation of frequency-doubled oscillations.

UR - https://www.scopus.com/pages/publications/0030718196

U2 - 10.1006/spmi.1996.0260

DO - 10.1006/spmi.1996.0260

M3 - Article

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EP - 63

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

IS - 1

ER -

Aharonov-Bohm oscillations in quantum dots: precise departures from h/e periodicity

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