Andreev reflection in YBa2Cu3O7-delta/La0.67Ca0.33MnO3: Existence of midgap states inthe {110} surface of YBa2Cu3O7-delta
文献类型：期刊论文
| 作者 | Luo, PS ; Wu, H ; Zhang, FC ; Cai, C ; Qi, XY ; Dong, XL ; Liu, W ; Duan, XF ; Xu, B ; Cao, LX ; Qiu, XG ; Zhao, BR |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2005 |
| 卷号 | 71期号:9 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTORS BIAS CONDUCTANCE PEAKS T-C SUPERCONDUCTORS LA0.67SR0.33MNO3/YBA2CU3O7-DELTA JUNCTIONS TUNNELING EXPERIMENTS BOUND-STATES FERROMAGNET INTERFACE TRANSPORT SYMMETRY |
| ISSN号 | 1098-0121 |
| 通讯作者 | Luo, PS: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | We use interfacial transport and transmission electron microscopy to study the YBa2Cu3O7-delta(YBCO)/La0.67Ca0.33MnO3(LCMO) junction that form a d(x)2(-y)2-wave superconductor and a ferromagnet (FM) heterostructure. Zero bias conductance peaks (ZBCPs) caused by Andreev reflection at zero bias were observed in the interfacial differential conductance spectra for the sample with an orderly mixed c- and a-axis [with (001) and (100)/(110)] orientation of YBCO in the interface. When the YBCO film is oriented with the c-axis normal to the interface, a zero bias conductance dip (ZBCD) is observed. These results evidence the existence of surface Andreev bound states (midgap states) in the {110} surface of YBCO, which can lead ZBCP to appear in all directions except the {100} surface of YBCO where ZBCD occurs. Furthermore, the absence of any obvious influence of spin-polarization of LCMO on ZBCP in zero magnetic field implies that the LCMO is not half-metallic in the interface of YBCO/LCMO, while strong magnetic field dependence of ZBCP shows that the applied magnetic field enhances the spin polarization of LCMO and suppresses ZBCPs in YBCO. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33738]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Luo, PS,Wu, H,Zhang, FC,et al. Andreev reflection in YBa2Cu3O7-delta/La0.67Ca0.33MnO3: Existence of midgap states inthe {110} surface of YBa2Cu3O7-delta[J]. PHYSICAL REVIEW B,2005,71(9). |
| APA | Luo, PS.,Wu, H.,Zhang, FC.,Cai, C.,Qi, XY.,...&Zhao, BR.(2005).Andreev reflection in YBa2Cu3O7-delta/La0.67Ca0.33MnO3: Existence of midgap states inthe {110} surface of YBa2Cu3O7-delta.PHYSICAL REVIEW B,71(9). |
| MLA | Luo, PS,et al."Andreev reflection in YBa2Cu3O7-delta/La0.67Ca0.33MnO3: Existence of midgap states inthe {110} surface of YBa2Cu3O7-delta".PHYSICAL REVIEW B 71.9(2005). |
入库方式： OAI收割
来源：物理研究所
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