Time-Resolved X-ray Diffraction Investigation of the Modified Phonon Dispersion in InSb Nanowires.

Andrius Jurgilaitis; Henrik Enquist; Pererik Andreasson; Anna Persson; Mattias Borg; P Caroff; Kimberly Dick Thelander; Maher Harb; Heiner Linke; Ralf Nüske; Lars-Erik Wernersson; Jörgen Larsson

doi:10.1021/nl403596b

Time-Resolved X-ray Diffraction Investigation of the Modified Phonon Dispersion in InSb Nanowires.

Andrius Jurgilaitis, Henrik Enquist, Pererik Andreasson, Anna Persson, Mattias Borg, P Caroff, Kimberly Dick Thelander, Maher Harb, Heiner Linke, Ralf Nüske, Lars-Erik Wernersson, Jörgen Larsson

Australian National University

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

Abstract

The modified phonon dispersion is of importance for understanding the origin of the reduced heat conductivity in nanowires. We have measured the phonon dispersion for 50 nm diameter InSb (111) nanowires using time-resolved X-ray diffraction. By comparing the sound speed of the bulk (3880 m/s) and that of a classical thin rod (3600 m/s) to our measurement (2880 m/s), we conclude that the origin of the reduced sound speed and thereby to the reduced heat conductivity is that the C44 elastic constant is reduced by 35% compared to the bulk material.

Original language	English
Pages (from-to)	541-546
Journal	Nano Letters
Volume	14
Issue number	2
DOIs	https://doi.org/10.1021/nl403596b
Publication status	Published - 2014

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Atomic physics (011013005), Solid State Physics (011013006), Max-laboratory (011012005), Electrical and information technology (011041010), Polymer and Materials Chemistry (LTH) (011001041)

Subject classification (UKÄ)

Nano-technology

Access to Document

10.1021/nl403596b

1 Doctoral Thesis (compilation)

Time-resolved x-ray diffraction of nanostructured samples
Persson, A. I. H., 2016
Research output: Thesis › Doctoral Thesis (compilation)

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Cite this

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abstract = "The modified phonon dispersion is of importance for understanding the origin of the reduced heat conductivity in nanowires. We have measured the phonon dispersion for 50 nm diameter InSb (111) nanowires using time-resolved X-ray diffraction. By comparing the sound speed of the bulk (3880 m/s) and that of a classical thin rod (3600 m/s) to our measurement (2880 m/s), we conclude that the origin of the reduced sound speed and thereby to the reduced heat conductivity is that the C44 elastic constant is reduced by 35% compared to the bulk material.",

author = "Andrius Jurgilaitis and Henrik Enquist and Pererik Andreasson and Anna Persson and Mattias Borg and P Caroff and {Dick Thelander}, Kimberly and Maher Harb and Heiner Linke and Ralf N{\"u}ske and Lars-Erik Wernersson and J{\"o}rgen Larsson",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Atomic physics (011013005), Solid State Physics (011013006), Max-laboratory (011012005), Electrical and information technology (011041010), Polymer and Materials Chemistry (LTH) (011001041)",

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doi = "10.1021/nl403596b",

language = "English",

volume = "14",

pages = "541--546",

journal = "Nano Letters",

issn = "1530-6992",

publisher = "The American Chemical Society (ACS)",

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T1 - Time-Resolved X-ray Diffraction Investigation of the Modified Phonon Dispersion in InSb Nanowires.

AU - Jurgilaitis, Andrius

AU - Enquist, Henrik

AU - Andreasson, Pererik

AU - Persson, Anna

AU - Borg, Mattias

AU - Caroff, P

AU - Dick Thelander, Kimberly

AU - Harb, Maher

AU - Linke, Heiner

AU - Nüske, Ralf

AU - Wernersson, Lars-Erik

AU - Larsson, Jörgen

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Atomic physics (011013005), Solid State Physics (011013006), Max-laboratory (011012005), Electrical and information technology (011041010), Polymer and Materials Chemistry (LTH) (011001041)

PY - 2014

Y1 - 2014

N2 - The modified phonon dispersion is of importance for understanding the origin of the reduced heat conductivity in nanowires. We have measured the phonon dispersion for 50 nm diameter InSb (111) nanowires using time-resolved X-ray diffraction. By comparing the sound speed of the bulk (3880 m/s) and that of a classical thin rod (3600 m/s) to our measurement (2880 m/s), we conclude that the origin of the reduced sound speed and thereby to the reduced heat conductivity is that the C44 elastic constant is reduced by 35% compared to the bulk material.

AB - The modified phonon dispersion is of importance for understanding the origin of the reduced heat conductivity in nanowires. We have measured the phonon dispersion for 50 nm diameter InSb (111) nanowires using time-resolved X-ray diffraction. By comparing the sound speed of the bulk (3880 m/s) and that of a classical thin rod (3600 m/s) to our measurement (2880 m/s), we conclude that the origin of the reduced sound speed and thereby to the reduced heat conductivity is that the C44 elastic constant is reduced by 35% compared to the bulk material.

U2 - 10.1021/nl403596b

DO - 10.1021/nl403596b

M3 - Article

SN - 1530-6992

VL - 14

SP - 541

EP - 546

JO - Nano Letters

JF - Nano Letters

IS - 2

ER -

Time-Resolved X-ray Diffraction Investigation of the Modified Phonon Dispersion in InSb Nanowires.

Abstract

Bibliographical note

Subject classification (UKÄ)

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Research output

Time-resolved x-ray diffraction of nanostructured samples

Cite this