The molecular dynamics based phonon wave-packet technique is used to study phonon transport across mass-mismatched fcc thin films. Transport behavior of normally incident longitudinal acoustic phonon wave packets with wave vectors ranging in magnitude from 2% to 50% of the first Brillouin zone boundary is examined as a function of thin film thickness when the phonon mean free path exceeds film thickness. The results indicate that for thin film to bulk solid mass ratios up to a factor of 6, the transmission of energy through the thin film can be well described by treating the thin film as a bulk solid.
REFERENCES
1.
R.
Venkatasubramanian
, E.
Siivola
, T.
Colpitts
, and B.
O’Quinn
, Nature (London)
413
, 597
(2001
).2.
J. V.
Barth
, G.
Costantini
, and K.
Kern
, Nature (London)
437
, 671
(2005
).3.
J.
Faist
, F.
Capasso
, D. L.
Sivco
, C.
Sirtori
, A. L.
Hutchinson
, and A. Y.
Cho
, Science
264
, 553
(1994
).4.
X.
Jiang
, K.
Schiffmann
, and C. -P.
Klages
, Phys. Rev. B
50
, 8402
(1994
).5.
P. K.
Schelling
, S. R.
Phillpot
, and P.
Keblinski
, Appl. Phys. Lett.
80
, 2484
(2002
).6.
P. K.
Schelling
and S. R.
Phillpot
, J. Appl. Phys.
93
, 5377
(2003
).7.
C.
Kimmer
, S.
Aubry
, A.
Skye
, and P. K.
Schelling
, Phys. Rev. B
75
, 144105
(2007
).8.
9.
N.
Zuckerman
and J. R.
Lukes
, Phys. Rev. B
77
, 094302
(2008
).10.
M.
Yao
, T.
Watanabe
, P. K.
Schelling
, P.
Keblinski
, D. G.
Cahill
, and S. R.
Phillpot
, J. Appl. Phys.
104
, 024905
(2008
).11.
E. T.
Swartz
and R. O.
Pohl
, Rev. Mod. Phys.
61
, 605
(1989
).12.
13.
J.
Wolfe
, Imaging Phonons: Acoustic Wave Propagation in Solids
(Cambridge University Press
, Cambridge, UK
, 1998
).14.
H.
Haug
, K.
Weiss
, and M.
Van Hove
, J. Low Temp. Phys.
4
, 263
(1971
).© 2010 American Institute of Physics.
2010
American Institute of Physics
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