PARTICIPATION OF CARBON IN THE ELECTRONIC-STRUCTURE OF YBA2CU3O7-DELTA

被引：6

作者：

BATSON, PE

SHAW, TM

DIMOS, D

DUNCOMBE, PR

机构：

[1] IBM Thomas J. Watson Research Center, Yorktown Heights

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.43.6236

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron-energy-loss measurements in 2-nm-sized regions of single-crystal YBa2Cu3O7-delta show about 0.5 wt.% carbon dissolved in the matrix. The energy-loss near-edge fine structure (ELNES) at the carbon ls absorption edge favors an environment similar to BaCO3. The carbon ELNES is correlated with the oxygen ls ELNES in a way that suggests that carbon-derived orbitals participate in the electronic structure within 1 eV of the Fermi level.

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页码：6236 / 6238

页数：3

相关论文

共 8 条

[1] HIGH-ENERGY RESOLUTION ELECTRON SPECTROMETER FOR 1-NM SPATIAL-ANALYSIS [J].

BATSON, PE .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1986, 57 (01) :43-48

[2] PARALLEL DETECTION FOR HIGH-RESOLUTION ELECTRON-ENERGY LOSS STUDIES IN THE SCANNING-TRANSMISSION ELECTRON-MICROSCOPE [J].

BATSON, PE .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (07) :1132-1138

[3] ANISOTROPY IN THE NEAR-EDGE ABSORPTION FINE-STRUCTURE OF YBA2CU3O7-DELTA [J].

BATSON, PE ;

CHISHOLM, MF .

PHYSICAL REVIEW B, 1988, 37 (01) :635-637

[4] SOME EFFECTS OF CO2, CO AND H2O UPON THE PROPERTIES OF BA2YCU3O7 [J].

GALLAGHER, PK ;

GRADER, GS ;

OBRYAN, HM .

MATERIALS RESEARCH BULLETIN, 1988, 23 (10) :1491-1499

[5]

HEYMAN RV, 1989, MICROBEAM ANAL, P468

[6] SYMMETRY OF HOLES IN HIGH-TC SUPERCONDUCTORS [J].

NUCKER, N ;

ROMBERG, H ;

XI, XX ;

FINK, J ;

GEGENHEIMER, B ;

ZHAO, ZX .

PHYSICAL REVIEW B, 1989, 39 (10) :6619-6629

[7] 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

[8] CARBON RETENTION IN YBA2CU3O7-DELTA AND ITS EFFECT ON THE SUPERCONDUCTING TRANSITION [J].

SHAW, TM ;

DIMOS, D ;

BATSON, PE ;

SCHROTT, AG ;

CLARKE, DR ;

DUNCOMBE, PR .

JOURNAL OF MATERIALS RESEARCH, 1990, 5 (06) :1176-1184