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 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117360 )