期刊
PHYSICAL REVIEW B
卷 85, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.235306
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资金
- [HDTRA1-10-1-0113]
Employing ab initio thermodynamics calculations, we elucidate for the first time the effects of growth conditions on the reconstruction phase diagram of the polar Cd-terminated CdTe (111) surface and resolve an existing experimental controversy of the low-temperature reconstruction under Te-rich conditions. We demonstrate that the Cd-vacancy (2 x 2) reconstruction is the most stable configuration in the allowed range of the Te chemical potential. Under Te-rich conditions, however, the calculations reveal a transition from a high-temperature semiconducting (2 x 2) to a low-temperature metallic (1 x 1)-Te-n reconstruction consisting of n Te adlayers forming a spiral trigonal structure. We also predict the temperature and pressure dependence of the Te thickness adlayer, which has remained experimentally unresolved.
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