Intervalley-scattering-induced electron-phonon energy relaxation in many-valley semiconductors at low temperatures

Mika Prunnila (Corresponding Author), P. Kivinen, A. Savin, P. Törmä, Jouni Ahopelto

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

We report on the effect of elastic intervalley scattering on the energy transport between electrons and phonons in many-valley semiconductors. We derive a general expression for the electron-phonon energy flow rate at the limit where elastic intervalley scattering dominates over diffusion. Electron heating experiments on doped n-type Si samples with electron concentrations (3.5–16.0)×1025  m−3 are performed at sub-Kelvin temperatures. We find a good agreement between the theory and the experiment.
Original languageEnglish
Article number206602
Number of pages4
JournalPhysical Review Letters
Volume95
Issue number20
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

valleys
scattering
elastic scattering
electrons
energy
phonons
flow velocity
heating
temperature

Keywords

  • semiconductors
  • electron-phonon interactions
  • phonons
  • low temperatures

Cite this

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title = "Intervalley-scattering-induced electron-phonon energy relaxation in many-valley semiconductors at low temperatures",
abstract = "We report on the effect of elastic intervalley scattering on the energy transport between electrons and phonons in many-valley semiconductors. We derive a general expression for the electron-phonon energy flow rate at the limit where elastic intervalley scattering dominates over diffusion. Electron heating experiments on doped n-type Si samples with electron concentrations (3.5–16.0)×1025  m−3 are performed at sub-Kelvin temperatures. We find a good agreement between the theory and the experiment.",
keywords = "semiconductors, electron-phonon interactions, phonons, low temperatures",
author = "Mika Prunnila and P. Kivinen and A. Savin and P. T{\"o}rm{\"a} and Jouni Ahopelto",
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Intervalley-scattering-induced electron-phonon energy relaxation in many-valley semiconductors at low temperatures. / Prunnila, Mika (Corresponding Author); Kivinen, P.; Savin, A.; Törmä, P.; Ahopelto, Jouni.

In: Physical Review Letters, Vol. 95, No. 20, 206602, 2005.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Intervalley-scattering-induced electron-phonon energy relaxation in many-valley semiconductors at low temperatures

AU - Prunnila, Mika

AU - Kivinen, P.

AU - Savin, A.

AU - Törmä, P.

AU - Ahopelto, Jouni

PY - 2005

Y1 - 2005

N2 - We report on the effect of elastic intervalley scattering on the energy transport between electrons and phonons in many-valley semiconductors. We derive a general expression for the electron-phonon energy flow rate at the limit where elastic intervalley scattering dominates over diffusion. Electron heating experiments on doped n-type Si samples with electron concentrations (3.5–16.0)×1025  m−3 are performed at sub-Kelvin temperatures. We find a good agreement between the theory and the experiment.

AB - We report on the effect of elastic intervalley scattering on the energy transport between electrons and phonons in many-valley semiconductors. We derive a general expression for the electron-phonon energy flow rate at the limit where elastic intervalley scattering dominates over diffusion. Electron heating experiments on doped n-type Si samples with electron concentrations (3.5–16.0)×1025  m−3 are performed at sub-Kelvin temperatures. We find a good agreement between the theory and the experiment.

KW - semiconductors

KW - electron-phonon interactions

KW - phonons

KW - low temperatures

U2 - 10.1103/PhysRevLett.95.206602

DO - 10.1103/PhysRevLett.95.206602

M3 - Article

VL - 95

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 20

M1 - 206602

ER -