LATTICE-DYNAMICS OF (BA/K)BIO3

被引：36

作者：

BRADEN, M

REICHARDT, W

SCHMIDBAUER, W

IVANOV, AS

RUMIANTSEV, AY

机构：

[1] CENS,CEA,LAB LEON BRILLOUIN,CNRS,F-91191 GIF SUR YVETTE,FRANCE

[2] UNIV OXFORD,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND

[3] IV KURCHATOV ATOM ENERGY INST,MOSCOW 123182,RUSSIA

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1995年 / 8卷 / 05期

关键词：

(BA/K)BIO3; LATTICE DYNAMICS; ELECTRON PHONON COUPLING; CRYSTAL STRUCTURE;

D O I：

10.1007/BF00727434

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Lattice dynamics of Ba.6K.4BiO3 was investigated by inelastic neutron scattering on a superconducting single crystal (T-c=26 K (midpoint)). At low frequencies the dispersion curves are very similar to those observed in BaPb.75Bi.25O3. Differences were found in the bond bending vibrations of the BiO6 octahedra which indicate that the binding in the K-doped compound is more ionic. Rather anomalous features were observed in the high frequency EGO bond stretching vibrations which resemble those observed in the high T-c cuprates La1.85Sr.15CuO4 and YBa2Cu3O7. The observed frequency shifts are interpreted as the consequence from a strong electron phonon coupling. The data are compared to the results obtained on non superconducting Ba.98K.02BiO3.

引用

页码：595 / 598

页数：4

共 16 条

[1]

BATTLOG B, 1988, PHYS REV LETT, V61, P1670

[2] INFRARED STUDY OF BA1-XKXBIO3 FROM CHARGE-DENSITY-WAVE INSULATOR TO SUPERCONDUCTOR [J].

BLANTON, SH ;

COLLINS, RT ;

KELLEHER, KH ;

ROTTER, LD ;

SCHLESINGER, Z ;

HINKS, DG ;

ZHENG, Y .

PHYSICAL REVIEW B, 1993, 47 (02) :996-1001

[3] SUPERCONDUCTIVITY NEAR 30-K WITHOUT COPPER - THE BA0.6K0.4BIO3 PEROVSKITE [J].

CAVA, RJ ;

BATLOGG, B ;

KRAJEWSKI, JJ ;

FARROW, R ;

RUPP, LW ;

WHITE, AE ;

SHORT, K ;

PECK, WF ;

KOMETANI, T .

NATURE, 1988, 332 (6167) :814-816

[4] A CHARGE-DENSITY-WAVE INSTABILITY IN BABI1-XPBXO3 CAUSED BY STRONG ELECTRON-PHONON COUPLING [J].

JURCZEK, E ;

RICE, TM .

EUROPHYSICS LETTERS, 1986, 1 (05) :225-231

[5] OPTICAL CONDUCTIVITY OF BA1-XKXBIO3 THROUGH THE METAL-SEMICONDUCTOR TRANSITION [J].

KARLOW, MA ;

COOPER, SL ;

KOTZ, AL ;

KLEIN, MV ;

HAN, PD ;

PAYNE, DA .

PHYSICAL REVIEW B, 1993, 48 (09) :6499-6505

[6] SUPERCONDUCTIVITY ABOVE 20 K IN THE BA-K-BI-O SYSTEM [J].

MATTHEISS, LF ;

GYORGY, EM ;

JOHNSON, DW .

PHYSICAL REVIEW B, 1988, 37 (07) :3745-3746

[7]

MATTHEISS LF, 1994, PHYS REV LETT, V60, P2681

[8] ELECTRON-PHONON COUPLING IN SUPERCONDUCTING BA0.6K0.4BIO3 - A RAMAN-SCATTERING STUDY [J].

MCCARTY, KF ;

RADOUSKY, HB ;

HINKS, DG ;

ZHENG, Y ;

MITCHELL, AW ;

FOLKERTS, TJ ;

SHELTON, RN .

PHYSICAL REVIEW B, 1989, 40 (04) :2662-2665

[9] STRUCTURAL PHASE-DIAGRAM OF THE BA1-XKXBIO3 SYSTEM [J].

PEI, SY ;

JORGENSEN, JD ;

DABROWSKI, B ;

HINKS, DG ;

RICHARDS, DR ;

MITCHELL, AW ;

NEWSAM, JM ;

SINHA, SK ;

VAKNIN, D ;

JACOBSON, AJ .

PHYSICAL REVIEW B, 1990, 41 (07) :4126-4141

[10]

PINTSCHOVIUS L, 1994, PHYSICAL PROPERTIES, V4

← 1 2 →