Park, Seung-Sik; Lee, Jin-Moo; Yoon, Seung-Il; Lee, Dong-Gu; Kim, Sung-Jin; Kim, Sang-Hyeob; Maeng, Sunglyul; Kim, Sang-Woo
ArticleIssue Date2008CitationPHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, v.40, no.7, pp 2526 - 2530PublisherELSEVIER SCIENCE BV