教師資料查詢 | 類別: 期刊論文 | 教師: 林大欽 LING, DAH-CHIN (瀏覽個人網頁)

標題:The Interplay between Weak Ferromagnetism and Superconductivity in RuSr2EuCu2O8
學年96
學期1
出版(發表)日期2007/09/01
作品名稱The Interplay between Weak Ferromagnetism and Superconductivity in RuSr2EuCu2O8
作品名稱(其他語言)
著者Ling, D. C.; Chen, C. H.; Chen, Y. Y.; Chang, B. C.; Ku, H. C.
單位淡江大學物理學系
出版者Elsevier B.V.
著錄名稱、卷期、頁數Physica C 460-462 pt.1, pp.518-519
摘要The magnetic field dependence of the low-temperature specific heat (LTSH) and I–V characteristics measurements on RuSr2EuCu2O8 were systematically carried out. It is found that the linear-T term γ decreases with increasing H, in contrast to the predicted result for the clean d-wave superconductivity. This finding suggests that the interaction between quasiparticles and magnons be weakened by magnetic field. In addition, the LTSH data exhibits a remarkably large T2 term for both H = 0 and H ≠ 0. The T2 term might be predominately associated with weak ferromagnetism in the Ru sublattice. Furthermore, the effective flux pinning energy E(H, T) determined from fitting the nonlinear region of the I–V curves follows a power-law dependence on magnetic field with an exponent close to −0.5 at a fixed temperature, indicating that the vortex lines of RuSr2EuCu2O8 is quasi-two-dimensional.
關鍵字Low-temperature specific heat;d-wave superconductivity;Weak ferromagnetism
語言英文
ISSN0921-4534
期刊性質國外
收錄於SCI
產學合作
通訊作者
審稿制度
國別荷蘭
公開徵稿
出版型式電子版
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