ANISOTROPIC DIELECTRIC-CONSTANT OF LA2CUO4

被引：9

作者：

VARYUKHIN, SV

ZAKHAROV, AA

机构：

[1] Kurchatov Atomic Energy Institute

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91711-C

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to obtain the values of the static dielectric constants of La2CuO4 in the directions parallel and perpendicular to the base plane the low-frequency impedance measurements of single crystal samples were carried out. The temperature dependences of capacitance C(T) and conductance G(T) have been investigated at T > 1.2K within the frequency interval 0.5 < omega < 10kHz. Static dielectric constants epsilon perpendicular-to, parallel-to were obtained by extrapolation of the functions C(T) to the zero temperature. Calculated by the same procedure epsilon perpendicular-to = 35 and epsilon parallel-to = 105 do not depend on the measurement frequency. The sample investigated is close to the 2D insulator-to-metal transition, and for this reason the anisotropy of the epsilon appears.

引用

页码：975 / 976

页数：2

共 4 条

[1] 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

[2] FREQUENCY-DEPENDENCE OF THE CONDUCTIVITY AND DIELECTRIC-CONSTANT OF LA2CUO4+Y NEAR THE INSULATOR-METAL TRANSITION [J].

CHEN, CY ;

PREYER, NW ;

PICONE, PJ ;

KASTNER, MA ;

JENSSEN, HP ;

GABBE, DR ;

CASSANHO, A ;

BIRGENEAU, RJ .

PHYSICAL REVIEW LETTERS, 1989, 63 (20) :2307-2310

[3]

ODA M, 1988, SOLID STATE COMMUN, V67, P250

[4] AC LOSSES AND SUBMILLIMETER ABSORPTION IN SINGLE-CRYSTALS LA2CUO4 [J].

VARYUKHIN, SV ;

ZAKHAROV, AA ;

GERSHENZON, EM ;

GOLTSMAN, GN ;

PTITSYNA, NG ;

CHULKOVA, GM .

PHYSICA B, 1990, 165 :1269-1270

← 1 →