Electrically driven spin polarization in Pr0.7Ca0.3MnO3/YBa2Cu3O7 heterostructures
學年 97
學期 2
出版（發表）日期 2009-04-01
作品名稱 Electrically driven spin polarization in Pr0.7Ca0.3MnO3/YBa2Cu3O7 heterostructures
作品名稱（其他語言）
著者 Lin, J. G.; Hsu, Daniel; Chiang, C. H; Chan, W. C.
單位 淡江大學物理學系
出版者 College Park: American Institute of Physics (AIP)
著錄名稱、卷期、頁數 Journal of Applied Physics 105(7), pp.07E301(3 pages)
摘要 The current and temperature dependent electrical transport is investigated in Pr0.7Ca0.3MnO3/YBa2Cu3O7 (PCMO/YBCO) heterostructures which are fabricated by pulsed laser deposition. Two PCMO/YBCO heterostructures are made with the thicknesses of PCMO varied. It is shown that the superconducting transition temperature significantly decreases with increasing thickness of PCMO and with increasing applied current, which are related to the pair breaking via the polarized electrons. However, the current-dependent normal-state resistivity shows two crossing points, indicating the competition of various phases. According to our analysis, the melting of charge ordering state by the electrical current may be the major cause for the electrically driven enhancement of spin polarization in PCMO/YBCO. The current and temperature dependent electrical transport is investigated in Pr0.7Ca0.3MnO3/YBa2Cu3O7 (PCMO/YBCO) heterostructures which are fabricated by pulsed laser deposition. Two PCMO/YBCO heterostructures are made with the thicknesses of PCMO varied. It is shown that the superconducting transition temperature significantly decreases with increasing thickness of PCMO and with increasing applied current, which are related to the pair breaking via the polarized electrons. However, the current-dependent normal-state resistivity shows two crossing points, indicating the competition of various phases. According to our analysis, the melting of charge ordering state by the electrical current may be the major cause for the electrically driven enhancement of spin polarization in PCMO/YBCO.
關鍵字 barium compounds; calcium compounds; electrical resistivity; ferromagnetic materials; high-temperature superconductors; interface magnetism; melting; praseodymium compounds; pulsed laser deposition; spin polarised transport; superconducting transition temperature; yttrium compounds
語言 en
ISSN 0021-8979 1089-7550
期刊性質
收錄於 SCI
產學合作
通訊作者 Lin, J. G.
審稿制度
國別
公開徵稿
出版型式 紙本 電子版
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