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Anomalous behaviors in high temperature superconductors: lattice effect and d-electron delocalization effect of the normal state on the Bi, Tl, and Y-system superconductors
Li Y(李扬); Li, Y; Cao, GH; Wang, YB; Ma, RZ; Zhao, ZX
1997
发表期刊PHYSICA C
卷号282期号:2页码:1057-1058
通讯作者INST PHYS,NATL LAB SUPERCONDUCT,BEIJING 100080,PEOPLES R CHINA ; ACAD SINICA,INST HIGH ENERGY PHYS,BEIJING 100080,PEOPLES R CHINA
文章类型Article; Proceedings Paper
摘要The dynamic studies of the hyperfine interactions and the lattice vibrational behavior are performed by means of temperature-dependent Mossbauer spectroscopy on the Bi-, Tl-, and Y-based superconductors, respectively. The temperature-dependent Mossbauer recoil-free factor f show that, above, but relatively close to, the transition temperature, there is an anomalous lattice effect which is related to the softening of phonon vibrational modes for Bi-2223, Tl-1223, and Y-123 superconductors. Moreover, for such three systems, the anomalous decrease of the Mossbauer isomer shift above Tc reveal the delocalization effect of d-electrons. Since the lattice effect is accompanied by d-electron delocalization effect at the almost same temperature region, it is believed that the structural instability involved in phonon softening is strongly interrelated to the change of the electronic states, and the phase separation behavior.
学科领域Physics
DOI10.1016/S0921-4534(97)00627-8
URL查看原文
语种英语
WOS研究方向Physics
WOS类目Physics, Applied
WOS记录号WOS:A1997XZ90500310
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238973
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Li Y,Li, Y,Cao, GH,et al. Anomalous behaviors in high temperature superconductors: lattice effect and d-electron delocalization effect of the normal state on the Bi, Tl, and Y-system superconductors[J]. PHYSICA C,1997,282(2):1057-1058.
APA 李扬,Li, Y,Cao, GH,Wang, YB,Ma, RZ,&Zhao, ZX.(1997).Anomalous behaviors in high temperature superconductors: lattice effect and d-electron delocalization effect of the normal state on the Bi, Tl, and Y-system superconductors.PHYSICA C,282(2),1057-1058.
MLA 李扬,et al."Anomalous behaviors in high temperature superconductors: lattice effect and d-electron delocalization effect of the normal state on the Bi, Tl, and Y-system superconductors".PHYSICA C 282.2(1997):1057-1058.
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