GLASS-LIKE INTERACTING OFF-CENTER CA++ DIPOLES AS PROBES OF THE COHERENT QUANTUM STATE IN SRTIO3

被引：42

作者：

DEC, J

KLEEMANN, W

BIANCHI, U

BEDNORZ, JG

机构：

[1] IBM CORP,FORSCHUNGSLAB,CH-8803 RUSCHLIKON,SWITZERLAND

[2] SILESIAN UNIV,INST PHYS,PL-40007 KATOWICE,POLAND

来源：

EUROPHYSICS LETTERS | 1995年 / 29卷 / 01期

关键词：

D O I：

10.1209/0295-5075/29/1/006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Anomalies in both the linear and the non-linear dielectric permittivity of weakly doped Sr1-xCaxTiO3 (x = 0.002) and strongly rising dielectric loss in the low-frequency regime evidence coupling of Ca++ centred polar nanoregions with the predicted coherent quantum state of the host lattice. Glassiness of the nanoregion system is modelled by Lacroix-Bene-type polydispersivity with an extrapolated freezing temperature T-g approximate to 4 K.

引用

页码：31 / 36

页数：6

共 21 条

[1] DIELECTRIC CONSTANT IN PEROVSKITE TYPE CRYSTALS
BARRETT, JH
[J]. PHYSICAL REVIEW, 1952, 86 (01): : 118 - 120
[2] SR1-XCAXTIO3 - AN XY QUANTUM FERROELECTRIC WITH TRANSITION TO RANDOMNESS
BEDNORZ, JG
MULLER, KA
[J]. PHYSICAL REVIEW LETTERS, 1984, 52 (25) : 2289 - 2292
[3] CALCULATIONS OF DIELECTRIC-PROPERTIES FROM THE SUPERPARAELECTRIC MODEL OF RELAXORS
BELL, AJ
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (46) : 8773 - 8792
[4] THEORY OF ORIENTATIONAL GLASSES MODELS, CONCEPTS, SIMULATIONS
BINDER, K
REGER, JD
[J]. ADVANCES IN PHYSICS, 1992, 41 (06) : 547 - 627
[5] PHONON ANOMALIES IN SRTIO3 IN THE QUANTUM PARAELECTRIC REGIME
COURTENS, E
CODDENS, G
HENNION, B
HEHLEN, B
PELOUS, J
VACHER, R
[J]. PHYSICA SCRIPTA, 1993, T49B : 430 - 435
[6] A DISPERSION FUNCTION OF PARAMAGNETIC RELAXATION
FANG, PH
[J]. PHYSICA, 1958, 24 (12): : 970 - 974
[7] CROSSOVER FROM THERMAL HOPPING TO QUANTUM TUNNELING
GRABERT, H
WEISS, U
[J]. PHYSICAL REVIEW LETTERS, 1984, 53 (19) : 1787 - 1790
[8] STATIC SCALING IN A SHORT-RANGE ISING SPIN-GLASS
GUNNARSSON, K
SVEDLINDH, P
NORDBLAD, P
LUNDGREN, L
ARUGA, H
ITO, A
[J]. PHYSICAL REVIEW B, 1991, 43 (10): : 8199 - 8203
[9] CLUSTER AND DOMAIN-WALL DYNAMICS OF FERROELECTRIC SR1-XCAXTIO3
KLEEMANN, W
SCHREMMER, H
[J]. PHYSICAL REVIEW B, 1989, 40 (10): : 7428 - 7431
[10] Kleemann W., 1988, FERROELECTRICS, V80, P297

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