OPTICAL-EXCITATIONS IN CUO2 SHEETS AND THEIR STRONG DEPENDENCE ON CU-O COORDINATION AND BOND LENGTH

被引：63

作者：

ARIMA, T ^{[1
]}

KIKUCHI, K ^{[1
]}

KASUYA, M ^{[1
]}

KOSHIHARA, S ^{[1
]}

TOKURA, Y ^{[1
]}

IDO, T ^{[1
]}

UCHIDA, S ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT APPL PHYS,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.44.917

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The charge-transfer (CT)-type optical "citations from O 2p to Cu 3d and to Cu 4s states have been observed around 1.5 and 5.0 eV, respectively, in undoped T'-phase L2CuO4 single crystals, where L = Pr, Nd, Sm, Eu, or Gd. The spectral shapes of these CT excitations are greatly modified upon electron doping by Ce substitution for the L sites. The CT excitation energies in a series of L2CuO4 compounds with the T, T*, and T' structures strongly depend on the L species, indicating the crucial effect of the in-plane Cu-O bond-length variation as well as of the Cu-O coordination on the electronic states in the CuO2 sheets.

引用

页码：917 / 920

页数：4

共 15 条

[1] RESONANT PHOTOEMISSION-STUDY OF ND2-XCEXCUO4-Y - NATURE OF ELECTRONIC STATES NEAR THE FERMI LEVEL [J].

ALLEN, JW ;

OLSON, CG ;

MAPLE, MB ;

KANG, JS ;

LIU, LZ ;

PARK, JH ;

ANDERSON, RO ;

ELLIS, WP ;

MARKERT, JT ;

DALICHAOUCH, Y ;

LIU, R .

PHYSICAL REVIEW LETTERS, 1990, 64 (05) :595-598

[2] OPTICAL STUDIES OF GAP, EXCHANGE, AND HOPPING ENERGIES IN THE INSULATING CUPRATES [J].

COOPER, SL ;

THOMAS, GA ;

MILLIS, AJ ;

SULEWSKI, PE ;

ORENSTEIN, J ;

RAPKINE, DH ;

CHEONG, SW ;

TREVOR, PL .

PHYSICAL REVIEW B, 1990, 42 (16) :10785-10788

[3] GROWTH OF THE OPTICAL CONDUCTIVITY IN THE CU-O PLANES [J].

COOPER, SL ;

THOMAS, GA ;

ORENSTEIN, J ;

RAPKINE, DH ;

MILLIS, AJ ;

CHEONG, SW ;

COOPER, AS ;

FISK, Z .

PHYSICAL REVIEW B, 1990, 41 (16) :11605-11608

[4] SPECTROSCOPIC EVIDENCE FOR STRONGLY CORRELATED ELECTRONIC STATES IN LA-SR-CU AND Y-BA-CU OXIDES [J].

FUJIMORI, A ;

TAKAYAMAMUROMACHI, E ;

UCHIDA, Y ;

OKAI, B .

PHYSICAL REVIEW B, 1987, 35 (16) :8814-8817

[5] PRESSURE-DEPENDENCE OF TC IN L2-XMXCUO4-Y (L = PR,ND,SM,EU M = CE,TH) - ANTISYMMETRIC BEHAVIOR OF ELECTRON-DOPED VERSUS HOLE-DOPED COPPER-OXIDE SUPERCONDUCTORS [J].

MARKERT, JT ;

BEILLE, J ;

NEUMEIER, JJ ;

EARLY, EA ;

SEAMAN, CL ;

MORAN, T ;

MAPLE, MB .

PHYSICAL REVIEW LETTERS, 1990, 64 (01) :80-83

[6] ON THE ROLE OF APICAL OXYGENS IN HIGH-TC CU-OXIDES [J].

MATSUKAWA, H ;

FUKUYAMA, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (05) :1723-1727

[7] ANOMALOUS ABSENCE OF PRESSURE EFFECT ON TRANSITION-TEMPERATURE IN THE ELECTRON-DOPED SUPERCONDUCTOR ND1.85CE0.15CUO4-DELTA [J].

MURAYAMA, C ;

MORI, N ;

YOMO, S ;

TAKAGI, H ;

UCHIDA, S ;

TOKURA, Y .

NATURE, 1989, 339 (6222) :293-294

[8]

OKA K, 1990, ADV SUPERCONDUCTIVIT, V2

[9] ROLE OF CU 4S-BAND IN CU 2P-XPS OF ND2-XCEXCUO4 [J].

OKADA, K ;

SEINO, Y ;

KOTANI, A .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (08) :2639-2642

[10] ANGLE-RESOLVED PHOTOEMISSION FROM ND2-XCEXCUO4(001) - A DISPERSIVE BANDLIKE FERMI-LIQUID STATE OF CU 3D CHARACTER NEAR THE FERMI LEVEL [J].

SAKISAKA, Y ;

MARUYAMA, T ;

MORIKAWA, Y ;

KATO, H ;

EDAMOTO, K ;

OKUSAWA, M ;

AIURA, Y ;

YANASHIMA, H ;

TERASHIMA, T ;

BANDO, Y ;

IIJIMA, K ;

YAMAMOTO, K ;

HIRATA, K .

PHYSICAL REVIEW B, 1990, 42 (07) :4189-4195

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