Dielectric relaxation in a proton glass

被引：4

作者：

Banerjee, V

Dattagupta, S

机构：

[1] School of Physical Sciences, Jawaharlal Nehru University

来源：

PHASE TRANSITIONS | 1997年 / 62卷 / 04期

关键词：

dielectric relaxation; proton glass; quantum tunnelling; frequency-dependent;

D O I：

10.1080/01411599708220640

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We study the dielectric relaxation in a hydrogen-bonded mixed ferro-and antiferroelectric crystal based on the mean field analysis of an Ising model (with quenched disorder) in a transverse field. We compare our results with existing measurements on Rb1-x(NH4)(x)H2PO4. We find that strong quantum effects lead to unusual behaviour hitherto unobserved in experiments.

引用

页码：233 / 243

页数：11

共 17 条

[1]

Akhiezer I. A., 1983, Soviet Physics - Solid State, V25, P81

[2] MODEL CALCULATION FOR THE SUSCEPTIBILITY OF A QUANTUM SPIN-GLASS [J].

BANERJEE, V ;

DATTAGUPTA, S .

PHYSICAL REVIEW B, 1994, 50 (14) :9942-9947

[3]

BANERJEE V, 1995, IN PRESS P DISC M NO

[4]

BANERJEE V, 1996, COMMUNICATION

[5]

BRUKNER HJ, 1988, Z PHYS B, V73, P337

[6] VOGEL-FULCHER SCALING OF THE SUSCEPTIBILITY IN A MIXED-CRYSTAL PROTON GLASS [J].

COURTENS, E .

PHYSICAL REVIEW LETTERS, 1984, 52 (01) :69-72

[7] RELAXATION DYNAMICS OF QUANTUM SPIN-GLASSES - ROLE OF HEAT-BATH COUPLING [J].

DATTAGUPTA, S ;

TADIC, B ;

PIRC, R ;

BLINC, R .

PHYSICAL REVIEW B, 1993, 47 (14) :8801-8808

[8] TUNNELING IN PROTON GLASSES - STOCHASTIC-THEORY OF NMR LINE-SHAPE [J].

DATTAGUPTA, S ;

TADIC, B ;

PIRC, R ;

BLINC, R .

PHYSICAL REVIEW B, 1991, 44 (09) :4387-4396

[9]

DATTAGUPTA S, 1987, RELAXATION PHENOMENA

[10] MEAN-FIELD THEORY OF THE PROTON GLASS [J].

DOBROSAVLJEVIC, V ;

STRATT, RM .

PHYSICAL REVIEW B, 1987, 36 (16) :8484-8496

← 1 2 →