Microscopic Origin of Universal Quasilinear Band Structures of Transparent Conducting Oxides

Title
Microscopic Origin of Universal Quasilinear Band Structures of Transparent Conducting Oxides
Authors
Youngho KangSang Ho JeonYoung-Woo Son이영수Myungkwan RyuSangyoon LeeSeungwu Han
Issue Date
2012-05
Publisher
Physical review letters
Citation
VOL 108, NO 19, 196404-1-196404-5
Abstract
A tight-binding-based microscopic theory is developed that accounts for quasilinear conduction bands appearing commonly in transparent conducting oxides. It is found that the interaction between oxygen p and metal s orbtials plays a critical role in determining the band structure around the conduction-band minimum. Under certain types of short-range orders, the tight-binding model universally leads to a dispersion relation which corresponds to that of the massive Dirac particle. The impact of the graphenelike band structure is demonstrated by evaluating the electron mobility of highly doped n-type ZnO.
URI
http://pubs.kist.re.kr/handle/201004/42376
ISSN
00319007
Appears in Collections:
KIST Publication > Article
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