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Title
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Effect of dissipation on the ac response of a resonant-tunneling diode
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Author
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Abstract
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| The effect of dissipation on the sc linear response of a resonant-tunneling diode is investigated theoretically by applying two well-known models. (i) The featureless phase-breaking model is applied to study the acoustic-phonon scattering, where we show that the phase-breaking process has no significant effect on the ac conductance in the high-temperature limit; phase breaking does have an influence at low temperatures, and we also discuss the characteristic time at zero temperature. (ii) The independent boson model is applied to describe the LO-phonon scattering, where we find a shift for the ac-conductance peak due to the renormalizing effect of the electron LO-phonon interaction on the resonant level and compare the line shape of the renormalized response function with that from the acoustic-phonon scattering. We also study the possibility of probing the emission of LO phonons in the ac response in the limit of zero temperature, and discuss the relevant experimental condition. |
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Language
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English
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Source (journal)
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Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
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Publication
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Lancaster, Pa
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1996
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ISSN
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1098-0121
[print]
1550-235X
[online]
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DOI
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10.1103/PHYSREVB.54.14032
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Volume/pages
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54
:19
(1996)
, p. 14032-14036
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ISI
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A1996VV26400094
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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