Order-disorder type of Peierls instability in BaVS3

被引：5

作者：

Ilakovac, Vita ^{[1
,2
]}

Girard, Adrien ^{[3
]}

Baledent, Victor ^{[4
]}

Foury-Leylekian, Pascale ^{[4
]}

Winkler, Bjoern ^{[5
]}

Berger, Helmuth ^{[7
]}

Bosak, Alexei ^{[8
]}

Pouget, Jean-Paul ^{[4
]}

Kupcic, Ivan ^{[6
]}

机构：

[1] Sorbonne Univ, Lab Chim Phys Matiere & Rayonnement, CNRS, F-75252 Paris, France

[2] CY Cergy Paris Univ, Dept Phys, F-95031 Cergy Pontoise, France

[3] Sorbonne Univ, MONARIS, CNRS, F-75252 Paris, France

[4] Univ Paris Saclay, Lab Phys Solides, CNRS, F-91405 Orsay, France

[5] Goethe Univ Frankfurt, Inst Geowissensch, D-60438 Frankfurt, Germany

[6] Univ Zagreb, Fac Sci, Dept Phys, HR-10002 Zagreb, Croatia

[7] Ecole Polytech Fed Lausanne EPFL, CH-1015 Lausanne, Switzerland

[8] ESRF European Synchrotron, F-38000 Grenoble, France

来源：

PHYSICAL REVIEW B | 2021年 / 103卷 / 01期

关键词：

CHARGE-DENSITY-WAVE; ELECTRONIC-STRUCTURE; NEUTRON-SCATTERING; LIQUID BEHAVIOR; 1ST PRINCIPLES; FERMI-SURFACE; TRANSITIONS; DYNAMICS; PHASE; STATE;

D O I：

10.1103/PhysRevB.103.014306

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lattice dynamics of low-dimensional BaVS3 is reported across the metal-insulator Peierls transition occurring at T-P = 69 K using a combination of the thermal diffuse scattering of x rays, inelastic x-ray scattering, and density-functional theory calculations. The nondetection of a Kohn anomaly points to a unique situation of an order-disorder Peierls instability with a quasielastic critical scattering which has been fully characterized. These observations are discussed in the scope of a Peierls instability dominated by strong electron-phonon coupling and/or nonadiabatic effects.

引用

页数：12

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