教師資料查詢 | 類別: 期刊論文 | 教師: 李啟正 LEE, CHI-CHENG (瀏覽個人網頁)

標題:Magnetic softness in iron-based superconductors
學年100
學期2
出版(發表)日期2012/07/17
作品名稱Magnetic softness in iron-based superconductors
作品名稱(其他語言)
著者Wei-Guo Yin; Chi-Cheng Lee; Wei Ku
單位
出版者
著錄名稱、卷期、頁數Supercond. Sci. Technol. 25, 084007
摘要We examine the relevance of several major material-dependent parameters to the magnetic softness in iron-based superconductors by means of first-principles electronic structure analysis of their parent compounds. The results are explained in the spin-fermion model where localized spins and orbitally degenerate itinerant electrons coexist and are coupled by Hund's rule coupling. We found that the difference in strength of the Hund's rule coupling term is the major material-dependent microscopic parameter for determining the ground-state spin pattern. The magnetic softness in iron-based superconductors is essentially driven by the competition between the double-exchange ferromagnetism and the superexchange antiferromagnetism.
關鍵字
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
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