Article Title
Magnetoresistance oscillations of ultrathin Pb bridges
Authors
Jian Wang, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
The Center for Nanoscale Science and Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, USA
Xucun Ma, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Shuaihua Ji, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Yun Qi, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Yingshuang Fu, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Aizi Jin, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Li Lu, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Changzhi Gu, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
X. C. Xie, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA
Mingliang Tian, The Center for Nanoscale Science and Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, USA
Jinfeng Jia, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Department of Physics, Tsinghua University, Beijing 100084, China
Qikun Xue, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Department of Physics, Tsinghua University, Beijing 100084, China
Keywords
Pb nanobridge, magnetoresistance, superconductivity, molecular beam epitaxy, scanning tunneling microscope, focus ion beam
Abstract
Pb nanobridges with a thickness of less than 10 nm and a width of several hundred nm have been fabricated from single-crystalline Pb fi lms using low-temperature molecular beam epitaxy and focus ion beam microfabrication techniques. We observed novel magnetoresistance oscillations below the superconducting transition temperature (TC) of the bridges. The oscillations which were not seen in the crystalline Pb fi lms may originate from the inhomogeneity of superconductivity induced by the applied magnetic fi elds on approaching the normal state, or the degradation of fi lm quality by thermal evolution.
Graphical Abstract
Publisher
Tsinghua University Press
Recommended Citation
Jian Wang,Xucun Ma,Shuaihua Ji,Yun Qi,Yingshuang Fu,Aizi Jin,Li Lu,Changzhi Gu,X. C. Xie,Mingliang Tian,Jinfeng Jia,Qikun Xue, Magnetoresistance oscillations of ultrathin Pb bridges. NanoRes.2009, 2: 671-677
