SUPERCONDUCTIVITY-INDUCED ANOMALIES IN C-AXIS POLARIZED PHONON MODES OF YBA2CU3O7 STUDIED BY NEUTRON INELASTIC-SCATTERING

被引：22

作者：

HARASHINA, H ^{[1
]}

KODAMA, K ^{[1
]}

SHAMOTO, S ^{[1
]}

SATO, M ^{[1
]}

KAKURAI, K ^{[1
]}

NISHI, M ^{[1
]}

机构：

[1] UNIV TOKYO, INST SOLID STATE PHYS, MINATO KU, TOKYO 106, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 05期

关键词：

YBA2CU3O7; PHONON ANOMALY; NEUTRON SCATTERING; SYMMETRY OF ORDER PARAMETER;

D O I：

10.1143/JPSJ.64.1462

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Superconductivity-induced phonon anomalies have been studied by inelastic neutron scattering for c-axis polarized modes in a single crystal of YBa2CU3O7. A mode with B-2u symmetry, which has out-of-phase motions of crystallographically distinct O(2) and O(3) atoms within a CuO2 plane, apparently exhibits a frequency decrease and a narrowing of the profile width with onset of the superconductivity, while a mode which has in-phase motions of these oxygens with respect to Cu atoms within the CuO2 plane does not show an appreciable anomaly. The (x(2)-y(2))-like symmetry of the superconducting order parameter is suggested by considering recent theoretical arguments.

引用

页码：1462 / 1465

页数：4

共 9 条

[1] TEMPERATURE DEPENDENCES OF THE 340-CM-1, 440-CM-1, AND 500-CM-1 RAMAN MODES OF YBA2CU3OY FOR 6.7-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-7.0 [J].

ALTENDORF, E ;

CHEN, XK ;

IRWIN, JC ;

LIANG, R ;

HARDY, WN .

PHYSICAL REVIEW B, 1993, 47 (13) :8140-8150

[2] NEUTRON-SCATTERING STUDIES OF INPLANE ZONE BOUNDARY PHONONS OF YBA2CU3O6.6 (T(C)SIMILAR-OR-EQUAL-TO-53-K) AND YBA2CU3O6.9 (T(C)SIMILAR-OR-EQUAL-TO-90-K) [J].

HARASHINA, H ;

SHAMOTO, S ;

KODAMA, K ;

SATO, M ;

KAKURAI, K ;

NISHI, M ;

STERNLIEB, BJ ;

SHIRANE, G .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (04) :1386-1395

[3] LATTICE-VIBRATIONS OF Y1-XPRXBA2CU3O7 - THEORY AND EXPERIMENT [J].

HUMLICEK, J ;

LITVINCHUK, AP ;

KRESS, W ;

LEDERLE, B ;

THOMSEN, C ;

CARDONA, M ;

HABERMEIER, HU ;

TROFIMOV, IE ;

KONIG, W .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1993, 206 (3-4) :345-359

[4] TEMPERATURE-DEPENDENCE OF PHONON RAMAN-SCATTERING IN Y2BA4CU7O15-DELTA [J].

KALL, M ;

LITVINCHUK, AP ;

BERASTEGUI, P ;

JOHANSSON, LG ;

BORJESSON, L .

PHYSICA C, 1994, 225 (3-4) :317-324

[5]

NORMAND B, UNPUB PHYS REV LETT

[6] SUPERCONDUCTIVITY-INDUCED PHONON SOFTENING IN YBA2CU3O7 OBSERVED BY INELASTIC NEUTRON-SCATTERING [J].

PYKA, N ;

REICHARDT, W ;

PINTSCHOVIUS, L ;

ENGEL, G ;

ROSSATMIGNOD, J ;

HENRY, JY .

PHYSICAL REVIEW LETTERS, 1993, 70 (10) :1457-1460

[7] MAGNETIC EXCITATIONS IN SUPERCONDUCTING YBA2CU3O6+X CRYSTALS STUDIED BY NEUTRON INELASTIC-SCATTERING [J].

SATO, M ;

SHAMOTO, S ;

KIYOKURA, T ;

KAKURAI, K ;

SHIRANE, G ;

STERNLIEB, BJ ;

TRANQUADA, JM .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (01) :263-273

[8] MAGNETIC CORRELATIONS IN YBA2CU3O6+X AT SUPERCONDUCTING CONCENTRATIONS [J].

SHIRANE, G ;

ALSNIELSEN, J ;

NIELSEN, M ;

TRANQUADA, JM ;

CHOU, H ;

SHAMOTO, S ;

SATO, M .

PHYSICAL REVIEW B, 1990, 41 (10) :6547-6552

[9] SITE-SELECTIVE OXYGEN-ISOTOPE EFFECT, IN OPTIMALLY DOPED YBA2CU3O6+X [J].

ZECH, D ;

KELLER, H ;

CONDER, K ;

KALDIS, E ;

LIAROKAPIS, E ;

POULAKIS, N ;

MULLER, KA .

NATURE, 1994, 371 (6499) :681-683

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