nature 3.4K LETTERS PUBLSHED ONLINE: 10 JANUARY 2010 I DO1: 10. 1038/NPHYS1499 TVSICS 3.10K 3.07 Superconductivity in one-atomic-layer metal films 28k. grown on Si(111) ⌒1261K 236K 207K1 Epitaxial 175K growth 081K 041K 4-3-2-101234 STM Bias(mv) 0.60 0 V7xV3 In 0.30 Data 0.20 BCSthe Impurities? 010}7=318K Xue 00.51015202.5303.5 Tsing T(K)STM Epitaxial growth Impurities? Xue Tsinghua