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题名: Cooper-pair formation by anharmonic rattling modes in the beta-pyrochlore superconductor KOs(2)O(6)
作者: Chang, Jun ;  Eremin, Ilya ;  Thalmeier, Peter
刊名: NEW JOURNAL OF PHYSICS
出版日期: 2009
卷号: 11, 期号:1, 页码:-
学科分类: Physics
通讯作者: Chang, J , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: [Chang, J; Eremin, I] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany; [Eremin, I] Tech Univ Carolo Wilhelmina Braunschweig, Inst Math & Theoret Phys, D-38106 Braunschweig, Germany; [Thalmeier, P] Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany
英文摘要: We study the influence of anharmonic rattling phonons in the beta-pyrochlore superconductor KOs(2)O(6) using the strong-coupling Eliashberg approach. In particular, by analyzing the specific heat data, we find that the rattling phonon frequency changes discontinuously at the critical temperature of the first-order phase transition. Solving the strong-coupling Eliashberg equations with effective temperature-dependent alpha(2)F(omega), we investigate the consequence of this first-order phase transition for the anomalous temperature dependence of the superconducting gap. We discuss our results in the context of the recent experimental data.
资助者: Volkswagen Foundation[I/82203]; NSF-DMR[0645461]; RMHE Program[N1 2.1.1/2985]
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5323
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Chang, Jun,Eremin, Ilya,Thalmeier, Peter. Cooper-pair formation by anharmonic rattling modes in the beta-pyrochlore superconductor KOs(2)O(6)[J]. NEW JOURNAL OF PHYSICS,2009,11(1):-.
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