Phase breaking and energy relaxation in open quantum-dot arrays

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

doi:10.1103/PhysRevB.62.15356

Phase breaking and energy relaxation in open quantum-dot arrays

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

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21 Scopus citations

Abstract

We study both the phase-breaking and the energy-relaxation times as a function of both temperature and bias current in arrays of coupled, open quantum dots. These times show a saturation at low temperature, and a decay at higher temperatures. Importantly, the variations of sample resistance as a function of temperature and current cannot be used to infer the electron temperature at a given bias current, which suggests that the energy relaxation process is likely to be phonon based.

Original language	English (US)
Pages (from-to)	15356-15358
Number of pages	3
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	62
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevB.62.15356
State	Published - Dec 15 2000

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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AU - Prasad, C.

AU - Ferry, D. K.

AU - Shailos, A.

AU - Elhassan, M.

AU - Bird, J. P.

AU - Lin, L. H.

AU - Aoki, N.

AU - Ochia, Y.

AU - Ishibashi, K.

AU - Aoyagi, Y.

PY - 2000/12/15

Y1 - 2000/12/15

N2 - We study both the phase-breaking and the energy-relaxation times as a function of both temperature and bias current in arrays of coupled, open quantum dots. These times show a saturation at low temperature, and a decay at higher temperatures. Importantly, the variations of sample resistance as a function of temperature and current cannot be used to infer the electron temperature at a given bias current, which suggests that the energy relaxation process is likely to be phonon based.

AB - We study both the phase-breaking and the energy-relaxation times as a function of both temperature and bias current in arrays of coupled, open quantum dots. These times show a saturation at low temperature, and a decay at higher temperatures. Importantly, the variations of sample resistance as a function of temperature and current cannot be used to infer the electron temperature at a given bias current, which suggests that the energy relaxation process is likely to be phonon based.

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Phase breaking and energy relaxation in open quantum-dot arrays

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