Anomalous breaking of phonon softening in the superconducting state of La1.85Sr0.15CuO4

被引：14

作者：

Lee, CH

Yamada, K

Arai, M

Wakimoto, S

Hosoya, S

Endoh, Y

机构：

[1] KOBE UNIV,DEPT PHYS,NADA KU,KOBE 657,JAPAN

[2] YAMANASHI UNIV,FAC ENGN,INST INORGAN SYNTH,KOFU,YAMANASHI 400,JAPAN

来源：

PHYSICA C | 1996年 / 257卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(95)00668-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Neutron inelastic scattering measurements on single crystals of La2-xSrxCuO4-y have been performed to study the relation between the soft phonon and the superconductivity. The phonon softening of the Z-point mode due to the incipient structural phase transition to the low-temperature tetragonal (P4(2)/ncm) or orthorhombic (Pccn) phase appeared to be frozen below T-c. The narrowing of the phonon line-width upon cooling was saturated below T-c, suggesting the appearance of the extra line broadening in the superconducting state.

引用

页码：264 / 270

页数：7

共 28 条

[1] THE SUPERCONDUCTING GAP IN PURE-CRYSTALS OF YBA2CU3O7 FROM PHONON RAMAN-SPECTRA [J].

ALTENDORF, E ;

IRWIN, JC ;

LIANG, R ;

HARDY, WN .

SOLID STATE COMMUNICATIONS, 1991, 80 (08) :627-630

[2] INFLUENCE OF SUPERCONDUCTING ENERGY-GAP ON PHONON LINEWIDTHS IN NB3SN [J].

AXE, JD ;

SHIRANE, G .

PHYSICAL REVIEW LETTERS, 1973, 30 (06) :214-216

[3]

AXE JD, P C LATT EFF HIGH TC

[4] SHORT-RANGE ATOMIC-STRUCTURE OF ND2-XCEXCUO4-Y DETERMINED BY REAL-SPACE REFINEMENT OF NEUTRON-POWDER-DIFFRACTION DATA [J].

BILLINGE, SJL ;

EGAMI, T .

PHYSICAL REVIEW B, 1993, 47 (21) :14386-14406

[5] SOFT-PHONON BEHAVIOR AND TRANSPORT IN SINGLE-CRYSTAL LA2CUO4 [J].

BIRGENEAU, RJ ;

CHEN, CY ;

GABBE, DR ;

JENSSEN, HP ;

KASTNER, MA ;

PETERS, CJ ;

PICONE, PJ ;

THIO, T ;

THURSTON, TR ;

TULLER, HL ;

AXE, JD ;

BONI, P ;

SHIRANE, G .

PHYSICAL REVIEW LETTERS, 1987, 59 (12) :1329-1332

[6] LATTICE INSTABILITY IN SINGLE-CRYSTAL LA2-XSRXCUO4 [J].

BONI, P ;

AXE, JD ;

SHIRANE, G ;

BIRGENEAU, RJ ;

GABBE, DR ;

JENSSEN, HP ;

KASTNER, MA ;

PICONE, PJ ;

THURSTON, TR ;

SATO, M ;

SHAMOTO, S .

PHYSICA B, 1989, 156 :902-905

[7] LATTICE INSTABILITY AND SOFT PHONONS IN SINGLE-CRYSTAL LA2-XSRXCUO4 [J].

BONI, P ;

AXE, JD ;

SHIRANE, G ;

BIRGENEAU, RJ ;

GABBE, DR ;

JENSSEN, HP ;

KASTNER, MA ;

PETERS, CJ ;

PICONE, PJ ;

THURSTON, TR .

PHYSICAL REVIEW B, 1988, 38 (01) :185-194

[8] COUPLING BETWEEN SUPERCONDUCTIVITY AND STRUCTURAL DEFORMATION IN LA2-XSRXCUO4 (X-SIMILAR-TO-0.13) [J].

BRADEN, M ;

HOFFELS, O ;

SCHNELLE, W ;

BUCHNER, B ;

HEGER, G ;

HENNION, B ;

TANAKA, I ;

KOJIMA, H .

PHYSICAL REVIEW B, 1993, 47 (18) :12288-12291

[9] ELASTIC AND INELASTIC NEUTRON-SCATTERING STUDIES ON THE TETRAGONAL TO ORTHORHOMBIC PHASE-TRANSITION OF LA2-XSRXCUO4+/-DELTA [J].

BRADEN, M ;

SCHNELLE, W ;

SCHWARZ, W ;

PYKA, N ;

HEGER, G ;

FISK, Z ;

GAMAYUNOV, K ;

TANAKA, I ;

KOJIMA, H .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1994, 94 (1-2) :29-37

[10] LOW-TEMPERATURE PHASE-TRANSITION AND SUPERCONDUCTIVITY IN (LA ND)-SR-CU-O [J].

BUCHNER, B ;

BRADEN, M ;

CRAMM, M ;

SCHLABITZ, W ;

SCHNELLE, W ;

HOFFELS, O ;

BRAUNISCH, W ;

MULLER, R ;

HEGER, G ;

WOHLLEBEN, D .

PHYSICA C, 1991, 185 :903-904

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