Interlayer tunneling spectroscopy and doping-dependent energy-gap structure of the trilayer superconductor Bi2Sr2Ca2Cu3O10+delta
Interlayer tunneling spectroscopy and doping-dependent energy-gap structure of the trilayer superconductor Bi2Sr2Ca2Cu3O10+delta
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三层超导体Bi2Sr2Ca2Cu3O10 δ的层间隧道光谱和掺杂相关能隙结构
DOI：
10.1103/physrevb.68.054533
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发表时间：
2003
影响因子：
3.7
通讯作者：
M. Suzuki
中科院分区：
文献类型：
--
作者：
Yoshiharu Yamada;K. Anagawa;T. Shibauchi;T. Fujii;Takao Watanabe;A. Matsuda;M. Suzuki
用短脉冲层间隧道谱测量了CuO2三层高Tc超导Bi2Sr2Ca2Cu3O10 + δ系统的超导能隙、赝能隙及其掺杂和温度的关系。结果表明，对于接近最佳掺杂的样品，超导能隙为80meV，赝能隙为120meV，比CuO2双层系统的超导能隙略大。这两个间隙的大小显示出明显的趋势，随着掺杂的增加而减少。在欠掺杂的样品中，观察到一个明确的dip和驼峰结构，随着掺杂的增加而下降，并趋于减少过掺杂的样品。在非等效掺杂模型中引入邻近效应，讨论了过掺杂区Tc不变与超导能隙减小的关系.我们还讨论了与其他光谱结果相比，倾角和驼峰结构。最后，我们认为一个重要的含义增加的最大约瑟夫森电流和减少超导间隙的幅度，都随着掺杂。
The superconducting gap, the pseudogap, and their doping and temperature dependences have been measured by the short-pulse interlayer tunneling spectroscopy for the CuO 2 triple-layer high-T c superconducting Bi 2 Sr 2 Ca 2 Cu 3 O 1 0 + δ system. It is found for a nearly optimally doped sample that the superconducting gap magnitude is 80 meV and the pseudogap is 120 meV, the values of which are slightly larger than those for CuO 2 double-layer system. Both gap magnitudes show a clear tendency to decrease with increasing doping. In an underdoped sample, a clear dip-and-hump structure is observed, which declines with increasing doping and tends to diminish in overdoped samples. The relationship between unchanged T c and decreasing superconducting gap in the overdoped region is discussed in terms of the proximity effect applied to the inequivalent doping model. We also discuss the dip-and-hump structure in comparison with other spectroscopic results. Finally, we argue an important implication of the increasing maximum Josephson current and the decreasing superconducting gap magnitude, both with increasing doping.
(Bi,Pb)_2Sr_2Ca_2Cu_3 O_<10+δ>中正常态能隙的隧道光谱
DOI：
--
发表时间：
2001
期刊：
Phys. Rev. B 64
影响因子：
--
作者：
H.Takayanagi;K.Nitta S.Ishikawa;J.Nakamura;R.Yagi;L.Zhu;S.Yamanaka;H.Fukuoka;H.Fukuoka;K.Tanigaki;D.H.Chi;Y.Ren;G.M.Kalvius;M.Nakajima;D.Huo;K.Miyamoto;M.Koyama;H.Sato;K.Yamamoto;T.Fukunaga;T.Fujiwara;折茂慎一;J.Nakamura;T.Oguchi;T.Takasaki;H.Takagiwa;H.Takagiwa;S.Kobayashi;H.Tou;K.Shimada;H.Sato;G.Goll;T.Sasakawa;T.Goto;Y.Echizen;Y.Muro;J.Kitagawa;A.S.Miguel;K.Kunii;E.Reny;L.Zhu;X.Chen;N.Okuda;O.Syshchenko;H.Takagiwa;H.Tou;Y.Nakamori;T.Fujiwara;J.Tamura;J.Nakamura;T.Iwasaki;A.S.Miguel;X.Chen;J.Tamura-Okada;T.Goto;M.Matsunami;H.Okamura;F.Iga;H.Okamura;G.M.Kalvius;S.O.Hong;K.Shimada;J.Kitagawa;K.Prokes;H.Sato;S.Qiao;S.Qiao;H.Sato;H.Sato;H.Sato;Y.Ueda;S.Orimo;K.Koyama;T.Fujiwara;S.Orimo;T.Fujiwara;T.Fukunaga;O.Syshchenko;O.Syshchenko;K.Yagasaki;T.Oguchi;H.Momida;K.Oka;Yu-Jun Zhao;小口多美夫;小口多美夫;小口多美夫;T.Ekino
通讯作者：
T.Ekino
影响因子：
8.6
作者：
H. Ding;J. Engelbrecht;Z. Wang;J. Campuzano;S.-C. Wang;H.-B. Yang;R. Rogan;T. Takahashi;
通讯作者：
H. Ding;J. Engelbrecht;Z. Wang;J. Campuzano;S.-C. Wang;H.-B. Yang;R. Rogan;T. Takahashi;
DOI：
10.1007/bf01303701
发表时间：
1986-01-01
期刊：
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER
影响因子：
--
作者：
BEDNORZ, JG;MULLER, KA
通讯作者：
MULLER, KA