DISTRIBUTION OF HOLES IN YBA2CU3O7 FROM CONVERGENT BEAM ELECTRON-DIFFRACTION

被引：13

作者：

GJONNES, K

BOE, N

TAFTO, J

机构：

[1] Department of Physics, University of Oslo, Oslo

来源：

ULTRAMICROSCOPY | 1993年 / 48卷 / 1-2期

关键词：

D O I：

10.1016/0304-3991(93)90169-X

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

A new method based on the dynamical coupling between high- and low-order reflections in convergent beam electron diffraction has been used to determine the structure factors for the (001) and (002) reflections in YBa2Cu3O6.95+/-0.05. These low-order structure factors are very sensitive to the charge distribution. The best fit to experimental diffraction intensities was obtained with 3/5 of the holes in the CuO chains and 2/5 of the holes in the CuO2 planes.

引用

页码：37 / 41

页数：5

共 16 条

[1] OXYGEN STOICHIOMETRY, SUPERCONDUCTIVITY AND NORMAL-STATE PROPERTIES OF YBA2CU3O7-DELTA [J].

CAVA, RJ ;

BATLOGG, B ;

CHEN, CH ;

RIETMAN, EA ;

ZAHURAK, SM ;

WERDER, D .

NATURE, 1987, 329 (6138) :423-425

[2] STRUCTURE AND CRYSTAL-CHEMISTRY OF THE HIGH-TC SUPERCONDUCTOR YBA2CU3O7-X [J].

DAVID, WIF ;

HARRISON, WTA ;

GUNN, JMF ;

MOZE, O ;

SOPER, AK ;

DAY, P ;

JORGENSEN, JD ;

HINKS, DG ;

BENO, MA ;

SODERHOLM, L ;

CAPONE, DW ;

SCHULLER, IK ;

SEGRE, CU ;

ZHANG, K ;

GRACE, JD .

NATURE, 1987, 327 (6120) :310-312

[3]

Doyle P. A., 1974, INT TABLES XRAY CRYS, VIV, P152

[4] RELATIVISTIC HARTREE-FOCK X-RAY AND ELECTRON SCATTERING FACTORS [J].

DOYLE, PA ;

TURNER, PS .

ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1968, A 24 :390-&

[5] THE BONDING CHARGE-DENSITY OF BETA'NIAL [J].

FOX, AG ;

TABBERNOR, MA .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (04) :669-678

[6]

GJONNES J, 1989, NATO ADV SCI I B-PHY, V203, P87

[7] ORIENTATION OF THE O 2P HOLES IN BI2SR2CA1CU2O8 [J].

HIMPSEL, FJ ;

CHANDRASHEKHAR, GV ;

MCLEAN, AB ;

SHAFER, MW .

PHYSICAL REVIEW B, 1988, 38 (16) :11946-11948

[8] STRUCTURAL-PROPERTIES OF OXYGEN-DEFICIENT YBA2CU3O7-DELTA [J].

JORGENSEN, JD ;

VEAL, BW ;

PAULIKAS, AP ;

NOWICKI, LJ ;

CRABTREE, GW ;

CLAUS, H ;

KWOK, WK .

PHYSICAL REVIEW B, 1990, 41 (04) :1863-1877

[9] EVIDENCE FOR HOLES ON OXYGEN SITES IN THE HIGH-TC SUPERCONDUCTORS LA2-XSRXCUO4 AND YBA2CU3O7-Y [J].

NUCKER, N ;

FINK, J ;

FUGGLE, JC ;

DURHAM, PJ ;

TEMMERMAN, WM .

PHYSICAL REVIEW B, 1988, 37 (10) :5158-5163

[10] ELECTRONIC-STRUCTURE OF THE HIGH-TEMPERATURE OXIDE SUPERCONDUCTORS [J].

PICKETT, WE .

REVIEWS OF MODERN PHYSICS, 1989, 61 (02) :433-512

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