Superconductors: Unusual oxygen isotope effects in cuprates?
Superconductors: Unusual oxygen isotope effects in cuprates?
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DOI：
10.1038/nature05738
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发表时间：
2007-03
期刊：
影响因子：
64.8
通讯作者：
J. Douglas;H. Iwasawa;Zhe Sun;A. Fedorov;M. Ishikado;T. Saitoh;H. Eisaki;H. Bando;T. Iwase;A. Ino;M. Arita;K. Shimada;H. Namatame;M. Taniguchi;T. Masui;S. Tajima;K. Fujita;S. Uchida;Y. Aiura;D. Dessau
中科院分区：
文献类型：
--
作者：
J. Douglas;H. Iwasawa;Zhe Sun;A. Fedorov;M. Ishikado;T. Saitoh;H. Eisaki;H. Bando;T. Iwase;A. Ino;M. Arita;K. Shimada;H. Namatame;M. Taniguchi;T. Masui;S. Tajima;K. Fujita;S. Uchida;Y. Aiura;D. Dessau
出自：G.-H.Gweonet al.Nature430,187-190(2004)在具有高临界温度(TC)的超导体中，配对玻色子可能充当将电子束缚到库珀对中的‘粘合剂’的可能性正在凝聚态物理中被积极地探索。Gweonet等人。声称在电子结构上存在着巨大的和不寻常的氧同位素效应，这表明声子在高温超导体中具有特殊的重要性。然而，我们无法在几乎相同的材料和实验条件下收集的新数据中检测到这种不寻常的氧同位素效应。我们的发现指向了这些材料中声子的一种更传统的影响。
Arising from: G.-H. Gweonet al.Nature430, 187–190 (2004)The possibility that a pairing boson might act as the 'glue' to bind electrons into a Cooper pair in superconductors with a high critical temperature (Tc) is being actively pursued in condensed-matter physics. Gweonet al. claim that there is a large and unusual oxygen-isotope effect on the electronic structure, indicating that phonons have a special importance in high-temperature superconductors. However, we are unable to detect this unusual oxygen-isotope effect in new data collected under almost identical material and experimental conditions. Our findings point towards a more conventional influence of phonons in these materials.