Magnetoresistance Oscillations of Ultrathin Pb Bridges  

作　　者：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 

机构地区：[1]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]The Center for Nanoscale Science and Department of Physics,The Pennsylvania State University,University Park,Pennsylvania 16802-6300,USA [3]Department of Physics,Oklahoma State University,Stillwater,OK 74078,USA [4]Department of Physics,Tsinghua University,Beijing 100084,China

出　　处：《Nano Research》2009年第9期671-677,共7页纳米研究（英文版）

基　　金：by the National Science Foundation and the Ministry of Science and Technology of China and the Penn.State MRSEC under NSF grant DMR-0820404.

摘　　要：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 lmsmay 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.

关 键 词：Pb nanobridge MAGNETORESISTANCE SUPERCONDUCTIVITY molecular beam epitaxy scanning tunneling microscope focus ion beam 

分 类 号：O17[理学—数学]