Quantum paraelectricity versus ferroelectricity: Nonlinear polarizability model

被引：10

作者：

Bussmann-Holder, A

Bishop, AR

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.70.024104

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The suppression of ferroelectricity by quantum fluctuations is investigated within a nonlinear polarizability model. A mass dependence of the quantum fluctuation dominated state is discovered which can extend to rather high temperatures as compared to known quantum paraelectrics. In addition a crossover from order-disorder to displacive dynamics is observed when ferroelectricity is suppressed. A phase appears in a regime where deviations from the high-temperature behavior set in, where polar precursors coexist with paraelectric quantum fluctuations. Elastic stiffness is found to crucially contribute to mode-mode coupling and the stability of the system.

引用

收藏

页码：024104 / 1

页数：5

相关论文

共 26 条

[1]

DIELECTRIC CONSTANT IN PEROVSKITE TYPE CRYSTALS [J].

BARRETT, JH .

PHYSICAL REVIEW, 1952, 86 (01) :118-120

[2]

NONLINEAR TRAVELING WAVES IN FERROELECTRICS [J].

BENEDEK, G ;

BUSSMANNHOLDER, A ;

BILZ, H .

PHYSICAL REVIEW B, 1987, 36 (01) :630-638

[3]

THEORY OF FERROELECTRICITY - THE POLARIZABILITY MODEL [J].

BILZ, H ;

BENEDEK, G ;

BUSSMANNHOLDER, A .

PHYSICAL REVIEW B, 1987, 35 (10) :4840-4849

[4]

NON-LINEAR LATTICE-DYNAMICS OF CRYSTALS WITH STRUCTURAL PHASE-TRANSITIONS [J].

BILZ, H ;

BUTTNER, H ;

BUSSMANNHOLDER, A ;

KRESS, W ;

SCHRODER, U .

PHYSICAL REVIEW LETTERS, 1982, 48 (04) :264-267

[5]

Stabilization of ferroelectricity in quantum paraelectrics by isotopic substitution [J].

Bussmann-Holder, A ;

Büttner, H ;

Bishop, AR .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (06) :L115-L120

[6]

Bussmann-Holder A, 2002, AIP CONF PROC, V626, P141, DOI 10.1063/1.1499562

[7]

Competing length scales in anharmonic lattices: Domains, stripes, and discommensurations [J].

BussmannHolder, A ;

Bishop, AR .

PHYSICAL REVIEW B, 1997, 56 (09) :5297-5301

[8]

APPLICATIONS OF THE POLARIZABILITY MODEL TO VARIOUS DISPLACIVE-TYPE FERROELECTRIC SYSTEMS [J].

BUSSMANNHOLDER, A ;

BILZ, H ;

BENEDEK, G .

PHYSICAL REVIEW B, 1989, 39 (13) :9214-9223

[9]

LATTICE-DYNAMICS AND ORIGIN OF FERROELECTRICITY IN BATIO3 - LINEARIZED-AUGMENTED-PLANE-WAVE TOTAL-ENERGY CALCULATIONS [J].

COHEN, RE ;

KRAKAUER, H .

PHYSICAL REVIEW B, 1990, 42 (10) :6416-6423

[10]

QUANTUM LIMIT OF FERROELECTRIC PHASE-TRANSITIONS IN KTA1-XNBXO3 [J].

HOCHLI, UT ;

WEIBEL, HE ;

BOATNER, LA .

PHYSICAL REVIEW LETTERS, 1977, 39 (18) :1158-1161