Acoustic phonons in the aperiodic layered crystal of Bi2Sr2CaCu2O8+δ

被引：15

作者：

Etrillard, J ^{[1
]}

Bourges, P

He, HF

Keimer, B

Liang, B

Lin, CT

机构：

[1] Ctr Etud Saclay, Leon Brillouin Lab, CEA, CNRS, F-91191 Gif Sur Yvette, France

[2] Univ Rennes 1, CNRS, UMR 6626, Grp Mat Condensee & Mat, F-35042 Rennes, France

[3] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

EUROPHYSICS LETTERS | 2001年 / 55卷 / 02期

关键词：

D O I：

10.1209/epl/i2001-00400-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present neutron scattering investigations of the structural dynamical properties of the aperiodic layered compound, Bi2Sr2CaCu2O8+delta. Acoustic phonons behave identically around the assumed average structure Bragg reflection and around the first satellite. This observation prove that the collective dynamics related to the incommensurate structure are quite different from what is expected in a modulated incommensurate model. Our data indicate two acoustic-like longitudinal branches along the incommensurate direction. Such behavior is compatible with a composite incommensurate structure where these two Bragg peaks correspond to the main reflections of each subsystem.

引用

页码：201 / 207

页数：7

共 23 条

[1]

Axe J. D., 1976, P GATLINBURG C NEUTR, V1, P353

[2] LONG-WAVELENGTH EXCITATIONS IN INCOMMENSURATE INTERGROWTH COMPOUNDS WITH APPLICATION TO HG3-DELTAASF6 [J].

AXE, JD ;

BAK, P .

PHYSICAL REVIEW B, 1982, 26 (09) :4963-4973

[3] Inelastic-neutron-scattering studies of a quasi-one-dimensional charge-density-wave system: Characterization of interchain interactions [J].

Bardeau, JF ;

Bulou, A ;

Swanson, BI ;

Hennion, B .

PHYSICAL REVIEW B, 1998, 58 (05) :2614-2619

[4]

Blinc R., 1986, Incommensurate Phases in Dielectrics, V1

[5]

CURRAT R, 1988, SOLID STATE PHYS, V41, P201

[6] Incommensurate composite structure of the superconductor Bi2Sr2CaCu2O8+δ [J].

Etrillard, J ;

Bourges, P ;

Lin, CT .

PHYSICAL REVIEW B, 2000, 62 (01) :150-153

[7] LONG-WAVELENGTH PHONONS IN INCOMMENSURATE SYSTEMS [J].

FINGER, W ;

RICE, TM .

PHYSICAL REVIEW B, 1983, 28 (01) :340-358

[8] THEORY OF THE CROSSOVER IN THE LOW-FREQUENCY DYNAMICS OF AN INCOMMENSURATE SYSTEM, HG3-DELTAASF6 [J].

FINGER, W ;

RICE, TM .

PHYSICAL REVIEW LETTERS, 1982, 49 (07) :468-470

[9] Static disorder in the incommensurate structure of the high T-c superconductor Bi(2)Sr(2)CaCu(2)O8+delta [J].

Grebille, D ;

Leligny, H ;

Ruyter, A ;

Labbe, P ;

Raveau, B .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1996, 52 :628-642

[10] NEUTRON INVESTIGATION OF THE DYNAMICAL PROPERTIES OF THE MERCURY-CHAIN COMPOUND HG3-DELTA ASF6 [J].

HEILMANN, IU ;

AXE, JD ;

HASTINGS, JM ;

SHIRANE, G ;

HEEGER, AJ ;

MACDIARMID, AG .

PHYSICAL REVIEW B, 1979, 20 (02) :751-762

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