ATOMICALLY RESOLVED STM/STS OBSERVATION ON THE EDGE OF CUO2 AND (BIO)2 LAYERS OF BI-SR-CA-CU-O

被引:75
作者
HASEGAWA, T
KITAZAWA, K
机构
[1] Department of Industrial Chemistry, University of Tokyo, Bunkyo-ku
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1990年 / 29卷 / 03期
关键词
Atomic resolution; Bi-Sr-Ca-Cu-O; Cross sectional image; Electronic structure; Layered structure; STM; STS;
D O I
10.1143/JJAP.29.L434
中图分类号
O59 [应用物理学];
学科分类号
摘要
Atomic resolution STM observation of the layered structure of an oxide superconductor has been achieved for the first time. The relative contributions to the electronic states from the CuO2 and (BiO)2 layers were remarkably different depending on the tunneling bias voltage, reflecting the two-dimensional nature of the electronic structure of Bi2Sr2CaCu2Oy. STS on each layer indicated the (BiO)2 layer to be insulating with an energy gap of 0.1 eV while the CuO2 layer was found to be essentially metallic but with an anomalous low-lying excitation spectrum. The modulation structure was observed on the layer-edge surface as well as on the basal plane. © 1990 The Japan Society of Applied Physics.
引用
收藏
页码:L434 / L437
页数:4
相关论文
共 21 条
  • [1] TOPOGRAPHY AND LOCAL CONDUCTANCE IMAGES OF YBA2CU3O7 CRYSTALS FRACTURED IN ULTRA HIGH-VACUUM
    CHEN, CJ
    TSUEI, CC
    [J]. SOLID STATE COMMUNICATIONS, 1989, 71 (01) : 33 - 38
  • [2] EMPTY STATES NEAR THE FERMI LEVEL IN BI2SR2CACU2O8
    DRUBE, W
    HIMPSEL, FJ
    CHANDRASHEKHAR, GV
    SHAFER, MW
    [J]. PHYSICAL REVIEW B, 1989, 39 (10): : 7328 - 7331
  • [3] ENERGY GAPS IN BI-SR-CA-CU-O AND BI-SR-CU-O SYSTEMS BY ELECTRON-TUNNELING
    EKINO, T
    AKIMITSU, J
    [J]. PHYSICAL REVIEW B, 1989, 40 (10): : 6902 - 6911
  • [4] REPRODUCIBLE TUNNELING DATA ON CHEMICALLY ETCHED SINGLE-CRYSTALS OF YBA2CU3O7
    GURVITCH, M
    VALLES, JM
    CUCOLO, AM
    DYNES, RC
    GARNO, JP
    SCHNEEMEYER, LF
    WASZCZAK, JV
    [J]. PHYSICAL REVIEW LETTERS, 1989, 63 (09) : 1008 - 1011
  • [5] SCANNING TUNNELING MICROSCOPY OF THE A-B PLANES OF BI2(CA,SR)3CU2O8+DELTA SINGLE-CRYSTAL AND THIN-FILM
    KIRK, MD
    EOM, CB
    OH, B
    SPIELMAN, SR
    BEASLEY, MR
    KAPITULNIK, A
    GEBALLE, TH
    QUATE, CF
    [J]. APPLIED PHYSICS LETTERS, 1988, 52 (24) : 2071 - 2073
  • [6] THE ORIGIN OF THE SUPERSTRUCTURE IN BI2SR2CACU2O8+DELTA AS REVEALED BY SCANNING TUNNELING MICROSCOPY
    KIRK, MD
    NOGAMI, J
    BASKI, AA
    MITZI, DB
    KAPITULNIK, A
    GEBALLE, TH
    QUATE, CF
    [J]. SCIENCE, 1988, 242 (4886) : 1673 - 1675
  • [7] SPECTROSCOPY OF SINGLE ATOMS IN THE SCANNING TUNNELING MICROSCOPE
    LANG, ND
    [J]. PHYSICAL REVIEW B, 1986, 34 (08): : 5947 - 5950
  • [8] POSSIBLE MODEL OF THE MODULATED STRUCTURE IN HIGH-TC SUPERCONDUCTOR IN A BI-SR-CA-CU-O SYSTEM REVEALED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY
    MATSUI, Y
    MAEDA, H
    TANAKA, Y
    HORIUCHI, S
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (03): : L372 - L375
  • [9] TWINS AND INTERGROWTH DEFECTS IN HIGH-TC BI-SR-CA-CU-O SUPERCONDUCTOR EXAMINED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY
    MATSUI, Y
    MAEDA, H
    TANAKA, Y
    TAKAYAMAMUROMACHI, E
    TAKEKAWA, S
    HORIUCHI, S
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (05): : L827 - L829
  • [10] Motohira N., 1989, J CERAM SOC JPN, V97, P994