TY - JOUR
T1 - Structural analysis of an InP(111)A surface using reflection high-energy electron diffraction rocking curves
AU - Horio, Yoshimi
AU - Yuhara, Junji
AU - Takakuwa, Yuji
N1 - Funding Information:
This study was performed under the Cooperative Research Program of the Network Joint Research Center for Materials and Devices and was supported by JSPS KAKENHI Grant Number 16K06816. The authors would like to thank Professor Jun Nakamura and Dr. Akihiro Ohtake for their helpful suggestions.
Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2019
Y1 - 2019
N2 - The surface structure of InP(111)A has been investigated using reflection high-energy electron diffraction (RHEED) rocking curves and first-principles calculations. We used Ar ion sputtering and low-temperature annealing at about 200 °C as a cleaning method, which yields a (1 × 1) surface structure. RHEED rocking curves reveal that the interatomic distance of the top surface bilayer is compressive. First-principles calculations were performed based on a (2 × 2) unit mesh to obtain a stable structure. The calculated results suggest that a surface compressive bilayer is necessary when In atoms are removed from the surface. We conclude that the InP(111)A-(1 × 1) surface structure comprises about 20%-40% In defects, which exist randomly on the surface, and the compressed surface bilayer has an interval of 0.1 Å.
AB - The surface structure of InP(111)A has been investigated using reflection high-energy electron diffraction (RHEED) rocking curves and first-principles calculations. We used Ar ion sputtering and low-temperature annealing at about 200 °C as a cleaning method, which yields a (1 × 1) surface structure. RHEED rocking curves reveal that the interatomic distance of the top surface bilayer is compressive. First-principles calculations were performed based on a (2 × 2) unit mesh to obtain a stable structure. The calculated results suggest that a surface compressive bilayer is necessary when In atoms are removed from the surface. We conclude that the InP(111)A-(1 × 1) surface structure comprises about 20%-40% In defects, which exist randomly on the surface, and the compressed surface bilayer has an interval of 0.1 Å.
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U2 - 10.7567/1347-4065/ab106e
DO - 10.7567/1347-4065/ab106e
M3 - Article
AN - SCOPUS:85072828866
SN - 0021-4922
VL - 58
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - SI
M1 - SIIA14
ER -