Atomic control of SrTiO3 surface for perfect epitaxy of perovskite oxides

被引：81

作者：

Kawasaki, M

Ohtomo, A

Arakane, T

Takahashi, K

Yoshimoto, M

Koinuma, H

机构：

[1] Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, 226, Nagatsuta, Midori-ku

来源：

APPLIED SURFACE SCIENCE | 1996年 / 107卷

关键词：

D O I：

10.1016/S0169-4332(96)00512-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Atomically smooth SrTiO3(100) surface having one unit cell high steps and atomically flat terraces was obtained by selective etching of SrO atomic layer in a NH4F-HF solution. Carbon contamination on the as-etched surface could be removed by annealing above 600 degrees C in UHV, as verified by Auger electron spectroscopy and low energy electron diffraction. Atomically flat terraces corrugated with a spacing of 0.4 nm was observed by scanning tunneling microscopy. The intensity oscillation of reflection high energy electron diffraction was continuously observed during the homoepitaxy on the surface by laser molecular beam epitaxy, proving the requisite of this wet-treated substrate for the perfect epitaxy of perovskite oxides.

引用

页码：102 / 106

页数：5

共 15 条

[1] SURFACE DEFECTS AND ELECTRONIC-STRUCTURE OF SRTIO3 SURFACES
HENRICH, VE
DRESSELHAUS, G
ZEIGER, HJ
[J]. PHYSICAL REVIEW B, 1978, 17 (12): : 4908 - 4921
[2] ELECTRONIC-STRUCTURE OF A SRO-TERMINATED SRTIO3(100) SURFACE
HIRATA, A
SAIKI, K
KOMA, A
ANDO, A
[J]. SURFACE SCIENCE, 1994, 319 (03) : 267 - 271
[3] JIANG QD, 1995, SURF SCI, V338, P882
[4] LAYER CONTROLLED GROWTH OF OXIDE SUPERCONDUCTORS
KAWAI, M
LIU, ZY
HANADA, T
KATAYAMA, M
AONO, M
MCCONVILLE, CF
[J]. APPLIED SURFACE SCIENCE, 1994, 82-3 : 487 - 493
[5] CRYSTAL-GROWTH AND ATOMIC-LEVEL CHARACTERIZATION OF YBA2CU3O7-DELTA EPITAXIAL-FILMS
KAWASAKI, M
NANTOH, M
[J]. MRS BULLETIN, 1994, 19 (09) : 33 - 38
[6] ATOMIC CONTROL OF THE SRTIO3 CRYSTAL-SURFACE
KAWASAKI, M
TAKAHASHI, K
MAEDA, T
TSUCHIYA, R
SHINOHARA, M
ISHIYAMA, O
YONEZAWA, T
YOSHIMOTO, M
KOINUMA, H
[J]. SCIENCE, 1994, 266 (5190) : 1540 - 1542
[7] CONTROLLED FORMATION OF OXIDE MATERIALS BY LASER MOLECULAR-BEAM EPITAXY
KOINUMA, H
YOSHIMOTO, M
[J]. APPLIED SURFACE SCIENCE, 1994, 75 : 308 - 319
[8] WHY CRYSTAL ENGINEERING OF OXIDES
KOINUMA, H
[J]. MRS BULLETIN, 1994, 19 (09) : 21 - 22
[9] STRUCTURES AND CHEMISTRY OF THE ANNEALED SRTIO3(001) SURFACE
LIANG, Y
BONNELL, DA
[J]. SURFACE SCIENCE, 1994, 310 (1-3) : 128 - 134
[10] LIANG Y, 1994, MATER RES SOC SYMP P, V318, P653

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