High spin state driven magnetism and thermoelectricity in Mn doped topological insulator Bi2Se3
學年 106
學期 2
出版（發表）日期 2018-06-15
作品名稱 High spin state driven magnetism and thermoelectricity in Mn doped topological insulator Bi2Se3
作品名稱（其他語言）
著者 V. K. Maurya; C. L. Dong; C. L. Chen; K. Asokan; S. Patnaik
單位
出版者
著錄名稱、卷期、頁數 Journal of Magnetism and Magnetic Materials 456, p.1-5
摘要 We report on the synthesis, and structural – magnetic characterizations of Mn doped Bi2Se3 towards achieving a magnetically doped topological insulator. High quality single crystals of MnxBi2−xSe3 (x = 0, 0.03, 0.05, 0.1) are grown and analysed by X-ray diffraction (XRD), Low Energy Electron Diffraction (LEED), Scanning electron microscopy (SEM), and X-ray absorption near-edge structure spectroscopy (XANES). Magnetic properties of these samples under ZFC-FC protocol and isothermal magnetization confirm ferromagnetic correlation above x = 0.03 value. XANES measurements confirm that the dopant Mn is in Mn2+ state. This is further reconfirmed to be in high spin state by fitting magnetic data with Brillouin function for J = 5/2. Both Hall and Seebeck measurements indicate a sign change of charge carriers above x = 0.03 value of Mn doping. We propose Mn doped Bi2Se3 to be a potential candidate for electromagnetic and thermoelectric device applications involving topological surface states.
關鍵字 Magnetic doping;Topological insulators
語言 en_US
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 USA
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/987654321/113675 )