EPITAXY OF ULTRATHIN FILMS OF YBA2CU3O7-DELTA ON SRTIO3(001) INVESTIGATED WITH X-RAY STANDING WAVES

被引：39

作者：

ZEGENHAGEN, J

SIEGRIST, T

FONTES, E

BERMAN, LE

PATEL, JR

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

[2] CHESS,WILSON LAB,ITHACA,NY

[3] BNL,NSLS,UPTON,NY 11973

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 93卷 / 09期

关键词：

HIGH-TC SUPERCONDUCTORS; SURFACES AND INTERFACES; THIN FILMS;

D O I：

10.1016/0038-1098(94)00866-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ultrathin films (40 angstorm and 80 angstrom) of YBa2Cu3O7-delta were grown on SrTiO3(001) by molecular beam epitaxy and characterized using the X-ray standing wave technique. The results show that the epitaxy of the superconductor starts on the TiO2 terminated surface with a perovskite-like BaTi(Cu)O3 unit cell, i.e. the Ba binds to the TiO2 surface layer. The next constituent of the thin film is either a BaCuO or YCuO perovskite-like unit cell. This alternative permits smooth overgrowth of SrTiO3(001) step edges. Strong perpendicular strain (epsilon(perpendicular-to) = -2.0% +/- 0.1%) in the 40 angstrom films proofs almost pseudomorphic growth whereas the 80 angstrom film (epsilon(perpendicular-to) = -0.8% +/- 0.1%) has significantly relaxed towards the bulk c-axis length.

引用

收藏

页码：763 / 767

页数：5

相关论文

共 13 条

[1] PREPARATION OF HIGH-TC (YB,Y)BA2CU3O7-DELTA THIN-FILMS BY COEVAPORATION FROM EFFUSION CELLS [J].

COLEMAN, E ;

SIEGRIST, T ;

YEH, JJ .

JOURNAL OF ELECTRONIC MATERIALS, 1990, 19 (03) :235-239

[2] SURFACE DEFECTS AND ELECTRONIC-STRUCTURE OF SRTIO3 SURFACES [J].

HENRICH, VE ;

DRESSELHAUS, G ;

ZEIGER, HJ .

PHYSICAL REVIEW B, 1978, 17 (12) :4908-4921

[3] SCANNING-TUNNELING-MICROSCOPY STUDY ON YBA2CU3O7-X FILMS WITH GROWTH STOP BY OBSERVING REFLECTION HIGH-ENERGY ELECTRON-DIFFRACTION OSCILLATIONS [J].

HIRATA, K ;

BAUDENBACHER, F ;

LANG, HP ;

GUNTHERODT, HJ ;

KINDER, H .

JOURNAL OF ALLOYS AND COMPOUNDS, 1993, 195 (1-2) :105-108

[4] INITIAL-STAGE OF YBA2CU3O7-X FILM GROWTH ON SRTIO3 [J].

HIRATA, K ;

BAUDENBACHER, F ;

KINDER, H .

PHYSICA C, 1993, 214 (3-4) :272-276

[5] X-RAY STUDY ON A 100 A-THICK YBA2CU3O7-DELTA EPITAXIAL FILM - THE RELATIONSHIP BETWEEN THE ORTHORHOMBIC SYMMETRY AND SUPERCONDUCTIVITY [J].

KAMIGAKI, K ;

TERAUCHI, H ;

TERASHIMA, T ;

BANDO, Y ;

IIJIMA, K ;

YAMAMOTO, K ;

HIRATA, K .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 159 (04) :505-512

[6] ANOMALOUS MISFIT STRAIN RELAXATION IN ULTRATHIN YBA2CU3O7-DELTA EPITAXIAL-FILMS [J].

KAMIGAKI, K ;

TERAUCHI, H ;

TERASHIMA, T ;

BANDO, Y ;

IIJIMA, K ;

YAMAMOTO, K ;

HIRATA, K ;

HAYASHI, K ;

NAKAGAWA, I ;

TOMII, Y .

JOURNAL OF APPLIED PHYSICS, 1991, 69 (06) :3653-3662

[7] REPRODUCIBLE TECHNIQUE FOR FABRICATION OF THIN-FILMS OF HIGH TRANSITION-TEMPERATURE SUPERCONDUCTORS [J].

MANKIEWICH, PM ;

SCOFIELD, JH ;

SKOCPOL, WJ ;

HOWARD, RE ;

DAYEM, AH ;

GOOD, E .

APPLIED PHYSICS LETTERS, 1987, 51 (21) :1753-1755

[8] STRUCTURE OF THE GROWTH INTERFACE OF Y-BA-CU-O ANALOGS ON SRTIO3 (001) SUBSTRATES [J].

NAKANISHI, M ;

HASHIZUME, H ;

TERASHIMA, T ;

BANDO, Y ;

MICHIKAMI, O ;

MAEYAMA, S ;

OSHIMA, M .

PHYSICAL REVIEW B, 1993, 48 (14) :10524-10529

[9] THE ATOMIC-STRUCTURE OF GROWTH INTERFACES IN Y-BA-CU-O THIN-FILMS [J].

RAMESH, R ;

INAM, A ;

HWANG, DM ;

RAVI, TS ;

SANDS, T ;

XI, XX ;

WU, XD ;

LI, Q ;

VENKATESAN, T ;

KILAAS, R .

JOURNAL OF MATERIALS RESEARCH, 1991, 6 (11) :2264-2271

[10] REFLECTION HIGH-ENERGY ELECTRON-DIFFRACTION OSCILLATIONS DURING EPITAXIAL-GROWTH OF HIGH-TEMPERATURE SUPERCONDUCTING OXIDES [J].

TERASHIMA, T ;

BANDO, Y ;

IIJIMA, K ;

YAMAMOTO, K ;

HIRATA, K ;

HAYASHI, K ;

KAMIGAKI, K ;

TERAUCHI, H .

PHYSICAL REVIEW LETTERS, 1990, 65 (21) :2684-2687