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Bi_2Sr_2CaCu_2O_(8+x)单晶本征结制备及特性 被引量:4

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摘要 在Bi_2Sr_2CaCu_2O_(8+x)单晶上制备了具有台式结构的本征.Josephson结,成功地观察到了本征结特有的电压-电流(I-V)特性曲线,包括多分支结构、具有低临界电流的表面结以及准粒子分支上的亚能隙结构,并给出了相应的物理解释.在30K时本征结的能隙电压为20mV.此外,内禀结的Ic-T曲线和D_(x^2-y^2)波对称超导体沿c轴方向Ic-T关系理论计算结果基本符合.其dI/dV-V关系曲线大致呈V型,与具有s波配对对称性超导体所呈现的U型的dI/dV-V曲线有明显不同,体现了Bi_2Sr_2CaCu_2O_(8+x)具有d_(x^2-y^2)波配对对称性.
出处 《科学通报》 EI CAS CSCD 北大核心 2003年第1期15-18,共4页 Chinese Science Bulletin
基金 中国科学技术部资助(NKBRSF-G19990646)
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参考文献16

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同被引文献18

  • 1王华兵,许伟伟,程其恒,吴培亨,骆永健,叶华,张进民.3mm波段上105次高温超导谐波混频[J].低温物理学报,1994,16(3):208-212. 被引量:5
  • 2杨莉,许伟伟,董晔,郭大元,尤立星,阎生超,吴培亨.本征Josephson结的表面结的特性研究[J].低温物理学报,2005,27(2):154-158. 被引量:4
  • 3陈亚军,康琳,蔡卫星,施建荣,赵少奇,吉争鸣,吴培亨.MgO(111)上NbN和AlN薄膜的生长研究[J].低温物理学报,2005,27(3):207-210. 被引量:5
  • 4吉争鸣,李洪洋,孙国柱,许伟伟,吴培亨.高温超导薄膜微波表面电阻测量标准理论精度修正[J].低温物理学报,2005,27(3):211-214. 被引量:7
  • 5张杰,闫生超,陈健,吉争鸣,康琳,许伟伟,吴培亨.高温超导本征结的制备工艺和特性[J].低温物理学报,2006,28(1):40-43. 被引量:2
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  • 7You L X, Wu P H, Ji Z M, et al. Intrinsic Josephson junctions fabricated in a well-controlled way. Supercon Sci Tech, 2003, 16(12):1361-1364
  • 8Wang H B, Wu P H, Chen J, et al. Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz. Appl Phys Lett, 2002, 80:1604-1606
  • 9Zhu X B, Zhao S P, Chen G H, et al. Controllable Bi2Sr2CaCu2O8+x/Au contacts fabricated at liquid-nitrogen temperature. Physica C,2004, 403:52-56
  • 10You L X, Wu P H, Xu W W, et al. Controlling the intrinsic Josephson junction number in a Bi2Sr2CaCu2O8+x mesa. Jpn J Appl Phys, 2004, 43(7A): 4163-4165

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