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Local lattice dynamics and isotope effect in yttrium diboride probed by extended x-ray absorption fine structure spectroscopy
Chu WS(储旺盛); Chu, WS; Hu TD(胡天斗); Wu ZY(吴自玉); Marcelli, A; Hu, TD; Wei, SQ; Liu, WH; Saini, NL; Bianconi, A; Wu, ZY
2009
发表期刊NEW JOURNAL OF PHYSICS
卷号11页码:83005
通讯作者[Chu, W. S. ; Hu, T. D. ; Wu, Z. Y.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Chu, W. S. ; Wei, S. Q. ; Wu, Z. Y.] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China ; [Marcelli, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy ; [Liu, W. H.] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China ; [Saini, N. L. ; Bianconi, A.] Univ Roma La Sapienza, I-00185 Rome, Italy ; [Saini, N. L. ; Bianconi, A.] Unita INFM, I-00185 Rome, Italy ; [Wu, Z. Y.] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China
摘要The lattice vibration properties and the boron isotope effect have been studied in YB(2) by using temperature-dependent extended x-ray absorption fine structure (EXAFS). The data show anomalous behavior of the Debye-Waller factor of the Y-B pair due to the superposition of an optical mode associated with the boron sublattice and an acoustic mode corresponding to the yttrium sublattice. We claim that the observed decoupling between metal and boron vibrations is responsible for the lower transition temperature compared to MgB(2). The analysis of the boron isotope effect confirms also that the B-B vibration mode plays a key role in the electron-phonon coupling.
文章类型Article
学科领域Physics
研究领域[WOS]Physics
DOI10.1088/1367-2630/11/8/083005
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语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000268699500005
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240816
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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Chu WS,Chu, WS,Hu TD,et al. Local lattice dynamics and isotope effect in yttrium diboride probed by extended x-ray absorption fine structure spectroscopy[J]. NEW JOURNAL OF PHYSICS,2009,11:83005.
APA 储旺盛.,Chu, WS.,胡天斗.,吴自玉.,Marcelli, A.,...&Wu, ZY.(2009).Local lattice dynamics and isotope effect in yttrium diboride probed by extended x-ray absorption fine structure spectroscopy.NEW JOURNAL OF PHYSICS,11,83005.
MLA 储旺盛,et al."Local lattice dynamics and isotope effect in yttrium diboride probed by extended x-ray absorption fine structure spectroscopy".NEW JOURNAL OF PHYSICS 11(2009):83005.
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