Atomic Design of Polarity of GaN Films Grown on SiC(0001)

Autor: Xie Mao-Hai, Wu Hua-Sheng, S. Y. Tong, Xu Shi-Hong, Dai Xianqi
Rok vydání: 2004
Předmět:
Zdroj: Communications in Theoretical Physics. 41:609-613
ISSN: 0253-6102
DOI: 10.1088/0253-6102/41/4/609
Popis: Ab initio total energy calculations are used to determine the interface structure of GaN films grown on 6H-SiC(0001) with different substrate reconstructions. The results indicate that GaN films grown on bare SiC(0001) are of the Ga-polarity, while GaN films grown on SiC(0001) with Si adlayer are of the N-polarity if there is no N-Si interchange at the interface. With the interchange, the GaN films are of the Ga-polarity.
Databáze: OpenAIRE