Large anisotropic normal-state magnetoresistance in clean MgB2 thin films
文献类型：期刊论文
| 作者 | Li, Q ; Liu, BT ; Hu, YF ; Chen, J ; Gao, H ; Shan, L ; Wen, HH ; Pogrebnyakov, AV ; Redwing, JM ; Xi, XX |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2006 |
| 卷号 | 96期号:16 |
| 关键词 | CHEMICAL VAPOR-DEPOSITION TRANSPORT-PROPERTIES SINGLE-CRYSTAL |
| ISSN号 | 0031-9007 |
| 通讯作者 | Li, Q: Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA. |
| 中文摘要 | We report a large normal-state magnetoresistance with temperature-dependent anisotropy in very clean epitaxial MgB2 thin films (residual resistivity much smaller than 1 mu Omega cm) grown by hybrid physical-chemical vapor deposition. The magnetoresistance shows a complex dependence on the orientation of the applied magnetic field, with a large magnetoresistance (Delta rho/rho(0)=136%) observed for the field H perpendicular to ab plane. The angular dependence changes dramatically as the temperature is increased, and at high temperatures the magnetoresistance maximum changes to H parallel to ab. We attribute the large magnetoresistance and the evolution of its angular dependence with temperature to the multiple bands with different Fermi surface topology in MgB2 and the relative scattering rates of the sigma and pi bands, which vary with temperature due to stronger electron-phonon coupling for the sigma bands. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40575]  |
| 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 | Li, Q,Liu, BT,Hu, YF,et al. Large anisotropic normal-state magnetoresistance in clean MgB2 thin films[J]. PHYSICAL REVIEW LETTERS,2006,96(16). |
| APA | Li, Q.,Liu, BT.,Hu, YF.,Chen, J.,Gao, H.,...&Xi, XX.(2006).Large anisotropic normal-state magnetoresistance in clean MgB2 thin films.PHYSICAL REVIEW LETTERS,96(16). |
| MLA | Li, Q,et al."Large anisotropic normal-state magnetoresistance in clean MgB2 thin films".PHYSICAL REVIEW LETTERS 96.16(2006). |
入库方式： OAI收割
来源：物理研究所
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