Heat flow in InAs/InP heterostructure nanowires
Matthews, J. ; Hoffmann, E. A. ; Weber, Carsten LU ; Wacker, Andreas LU
and Linke, Heiner
LU
(2012)
In Physical Review B (Condensed Matter and Materials Physics)
86(17).
- Abstract
- The transfer of heat between electrons and phonons plays a key role for thermalmanagement in future nanowire-based devices, but only a few experimental measurements of electron-phonon (e-ph) coupling in nanowires are available. Here, we combine experimental temperature measurements on an InAs/InP heterostructure nanowire system with finite element modeling to extract information on heat flow mediated by e-ph coupling. We find that the electron and phonon temperatures in our system are highly coupled even at temperatures as low as 2 K. Additionally, we find evidence that the usual power-law temperature dependence of electron-phonon coupling may not correctly describe the coupling in nanowires and show that this result is consistent with... (More)
- The transfer of heat between electrons and phonons plays a key role for thermalmanagement in future nanowire-based devices, but only a few experimental measurements of electron-phonon (e-ph) coupling in nanowires are available. Here, we combine experimental temperature measurements on an InAs/InP heterostructure nanowire system with finite element modeling to extract information on heat flow mediated by e-ph coupling. We find that the electron and phonon temperatures in our system are highly coupled even at temperatures as low as 2 K. Additionally, we find evidence that the usual power-law temperature dependence of electron-phonon coupling may not correctly describe the coupling in nanowires and show that this result is consistent with previous research on similar one-dimensional electron systems. We also compare the strength of the observed e-ph coupling to a theoretical analysis of e-ph interaction in InAs nanowires, which predicts a significantly weaker coupling strength than observed experimentally. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3243987
- author
- Matthews, J.
; Hoffmann, E. A.
; Weber, Carsten
LU
; Wacker, Andreas
LU
and Linke, Heiner
LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 86
- issue
- 17
- article number
- 174302
- publisher
- American Physical Society
- external identifiers
-
- wos:000310968400003
- scopus:84870002149
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.86.174302
- language
- English
- LU publication?
- yes
- id
- 4dee4f8d-fda2-4831-9315-a957bf92371a (old id 3243987)
- date added to LUP
- 2016-04-01 14:21:41
- date last changed
- 2023-11-13 06:29:52
@article{4dee4f8d-fda2-4831-9315-a957bf92371a,
abstract = {{The transfer of heat between electrons and phonons plays a key role for thermalmanagement in future nanowire-based devices, but only a few experimental measurements of electron-phonon (e-ph) coupling in nanowires are available. Here, we combine experimental temperature measurements on an InAs/InP heterostructure nanowire system with finite element modeling to extract information on heat flow mediated by e-ph coupling. We find that the electron and phonon temperatures in our system are highly coupled even at temperatures as low as 2 K. Additionally, we find evidence that the usual power-law temperature dependence of electron-phonon coupling may not correctly describe the coupling in nanowires and show that this result is consistent with previous research on similar one-dimensional electron systems. We also compare the strength of the observed e-ph coupling to a theoretical analysis of e-ph interaction in InAs nanowires, which predicts a significantly weaker coupling strength than observed experimentally.}},
author = {{Matthews, J. and Hoffmann, E. A. and Weber, Carsten and Wacker, Andreas and Linke, Heiner}},
issn = {{1098-0121}},
language = {{eng}},
number = {{17}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Heat flow in InAs/InP heterostructure nanowires}},
url = {{https://lup.lub.lu.se/search/files/3933357/3706274.pdf}},
doi = {{10.1103/PhysRevB.86.174302}},
volume = {{86}},
year = {{2012}},
}