Investigation of thermal conductivity of nitride mixed crystals and superlattices by molecular dynamics

Takahiro Kawamura; Yoshihiro Kangawa; Koichi Kakimoto

doi:10.1002/pssc.200565107

Investigation of thermal conductivity of nitride mixed crystals and superlattices by molecular dynamics

Takahiro Kawamura, Yoshihiro Kangawa, Koichi Kakimoto

Division of Renewable Energy Dynamics

Research output: Contribution to journal › Conference article › peer-review

12 Citations (Scopus)

Abstract

The thermal conductivities of Al_xGa_1-xN and In _xGa_1-xN mixed crystal and AlN/GaN superlattices were investigated by molecular dynamics simulation. We used Stillinger-Weber potentials, and Green-Kubo's formula was employed to calculate thermal conductivity. The results showed that the value of thermal conductivity of Al_.0.5Ga_0.5N was about 1/20 smaller than that of GaN. It was also found that the thermal conductivity of AlN/GaN superlattices along the c-axis, which is parallel to the growth direction, was much less than that of bulk GaN.

Original language	English
Pages (from-to)	1695-1699
Number of pages	5
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	3
DOIs	https://doi.org/10.1002/pssc.200565107
Publication status	Published - 2006
Event	6th International Conference on Nitride Semiconductors, ICNS-6 - Bremen, Germany Duration: Aug 28 2005 → Sept 2 2005

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1002/pssc.200565107

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title = "Investigation of thermal conductivity of nitride mixed crystals and superlattices by molecular dynamics",

abstract = "The thermal conductivities of AlxGa1-xN and In xGa1-xN mixed crystal and AlN/GaN superlattices were investigated by molecular dynamics simulation. We used Stillinger-Weber potentials, and Green-Kubo's formula was employed to calculate thermal conductivity. The results showed that the value of thermal conductivity of Al.0.5Ga0.5N was about 1/20 smaller than that of GaN. It was also found that the thermal conductivity of AlN/GaN superlattices along the c-axis, which is parallel to the growth direction, was much less than that of bulk GaN.",

author = "Takahiro Kawamura and Yoshihiro Kangawa and Koichi Kakimoto",

year = "2006",

doi = "10.1002/pssc.200565107",

language = "English",

volume = "3",

pages = "1695--1699",

journal = "Physica Status Solidi C: Conferences",

issn = "1862-6351",

publisher = "Wiley-VCH Verlag",

note = "6th International Conference on Nitride Semiconductors, ICNS-6 ; Conference date: 28-08-2005 Through 02-09-2005",

}

TY - JOUR

T1 - Investigation of thermal conductivity of nitride mixed crystals and superlattices by molecular dynamics

AU - Kawamura, Takahiro

AU - Kangawa, Yoshihiro

AU - Kakimoto, Koichi

PY - 2006

Y1 - 2006

N2 - The thermal conductivities of AlxGa1-xN and In xGa1-xN mixed crystal and AlN/GaN superlattices were investigated by molecular dynamics simulation. We used Stillinger-Weber potentials, and Green-Kubo's formula was employed to calculate thermal conductivity. The results showed that the value of thermal conductivity of Al.0.5Ga0.5N was about 1/20 smaller than that of GaN. It was also found that the thermal conductivity of AlN/GaN superlattices along the c-axis, which is parallel to the growth direction, was much less than that of bulk GaN.

AB - The thermal conductivities of AlxGa1-xN and In xGa1-xN mixed crystal and AlN/GaN superlattices were investigated by molecular dynamics simulation. We used Stillinger-Weber potentials, and Green-Kubo's formula was employed to calculate thermal conductivity. The results showed that the value of thermal conductivity of Al.0.5Ga0.5N was about 1/20 smaller than that of GaN. It was also found that the thermal conductivity of AlN/GaN superlattices along the c-axis, which is parallel to the growth direction, was much less than that of bulk GaN.

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U2 - 10.1002/pssc.200565107

DO - 10.1002/pssc.200565107

M3 - Conference article

AN - SCOPUS:33746351760

SN - 1862-6351

VL - 3

SP - 1695

EP - 1699

JO - Physica Status Solidi C: Conferences

JF - Physica Status Solidi C: Conferences

T2 - 6th International Conference on Nitride Semiconductors, ICNS-6

Y2 - 28 August 2005 through 2 September 2005

ER -

Investigation of thermal conductivity of nitride mixed crystals and superlattices by molecular dynamics

Abstract

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