TY  - JOUR
AU  - Brooks, Charles M.
AU  - Wilson, Richard B.
AU  - Schäfer, Anna
AU  - Mundy, Julia A.
AU  - Holtz, Megan E.
AU  - Muller, David A.
AU  - Schubert, Jürgen
AU  - Cahill, David G.
AU  - Schlom, Darrell G.
TI  - Tuning thermal conductivity in homoepitaxial SrTiO$_{3}$ films via defects
JO  - Applied physics letters
VL  - 107
IS  - 5
SN  - 1077-3118
CY  - Melville, NY
PB  - American Inst. of Physics
M1  - FZJ-2015-05140
SP  - 051902 -
PY  - 2015
AB  - We demonstrate the ability to tune the thermal conductivity of homoepitaxial SrTiO3 films depositedby reactive molecular-beam epitaxy by varying growth temperature, oxidation environment, and cationstoichiometry. Both point defects and planar defects decrease the longitudinal thermal conductivity(k33), with the greatest decrease in films of the same composition observed for films containingplanar defects oriented perpendicular to the direction of heat flow. The longitudinal thermal conductivitycan be modified by as much as 80%—from 11.5W m1K1 for stoichiometric homoepitaxialSrTiO3 to 2W m1K1 for strontium-rich homoepitaxial Sr1þdTiOx films—by incorporating (SrO)2Ruddlesden-Popper planar defects.VC 2015 AIP Publishing LLC.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000359375700014
DO  - DOI:10.1063/1.4927200
UR  - https://juser.fz-juelich.de/record/203125
ER  -