LOW-FREQUENCY DYNAMICS OF KH2PO4-TYPE CRYSTALS

被引：9

作者：

HAVLIN, S ^{[1
]}

SOMPOLINSKY, H ^{[1
]}

机构：

[1] UNIV EDINBURGH,DEPT PHYS,EDINBURGH EH8 9JZ,MIDLOTHIAN,SCOTLAND

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 15期

关键词：

D O I：

10.1088/0022-3719/12/15/021

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The paraelectric low-frequency dynamics of KH2PO 4-type crystals has been investigated on the basis of a new time-dependent pseudospin Hamiltonian which includes both long-range electrostatic interactions and strong short-range interactions which exist within clusters of four neighbouring bonds. The static limit of this model is the well-known four-particle cluster tunnelling Hamiltonian which gives a good account of the static properties of the first-order phase transition in these crystals. First-order time-dependent perturbation theory is used to calculate the dynamical linear response of the system.

引用

页码：3135 / 3147

页数：13

共 46 条

[1]

AZOULAY J, 1967, PHYS STAT SOLIDI B, V81, P295

[2] ELECTRONIC STUDIES OF KH2PO4 [J].

BENEPE, JW ;

REESE, W .

PHYSICAL REVIEW B, 1971, 3 (09) :3032-&

[3] THEORY FOR DYNAMICS OF CLUSTERS NEAR CRITICAL-POINT .1. RELAXATION OF GLAUBER KINETIC ISING-MODEL [J].

BINDER, K ;

STAUFFER, D ;

MULLERKRUMBHAAR, H .

PHYSICAL REVIEW B, 1975, 12 (11) :5261-5287

[4] THEORY FOR DYNAMICS OF CLUSTERS .2. CRITICAL DIFFUSION IN BINARY-SYSTEMS AND KINETICS OF PHASE SEPARATION [J].

BINDER, K .

PHYSICAL REVIEW B, 1977, 15 (09) :4425-4447

[5] CLUSTER APPROXIMATIONS FOR ORDER-DISORDER-TYPE HYDROGEN-BONDED FERROELECTRICS .2. APPLICATION TO KH2PO4 [J].

BLINC, R ;

SVETINA, S .

PHYSICAL REVIEW, 1966, 147 (02) :430-&

[6] DYNAMICS OF ORDER-DISORDER-TYPE FERROELECTRICS AND ANTI-FERROELECTRICS [J].

BLINC, R ;

ZEKS, B .

ADVANCES IN PHYSICS, 1972, 21 (93) :693-757

[7] SOFT-MODE DYNAMICS OF PARTIALLY DEUTERATED KH-2PO-4-TYPE CRYSTALS [J].

BLINC, R ;

PIRC, R ;

ZEKS, B .

PHYSICAL REVIEW B, 1976, 13 (07) :2943-2949

[8]

Blinc R., 1974, SOFT MODES FERROELEC

[9] TUNNELLING AND COLLECTIVE EXCITATIONS IN A MICROSCOPIC MODEL OF FERROELECTRICITY [J].

BROUT, R ;

MULLER, KA ;

THOMAS, H .

SOLID STATE COMMUNICATIONS, 1966, 4 (10) :507-&

[10] POLARIZATION AND DIELECTRIC-CONSTANT OF KDP-TYPE CRYSTALS [J].

CHABIN, M ;

GILLETTA, F .

FERROELECTRICS, 1977, 15 (3-4) :149-154

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