Room temperature polar structure and multiferroicity in BaFe2Se3

被引：11

作者：

Zheng, W. ^{[1
]}

Baledent, V. ^{[1
]}

Lepetit, M. B. ^{[2
,3
]}

Retailleau, P. ^{[4
]}

Elslande, E. V. ^{[4
]}

Pasquier, C. R. ^{[1
]}

Auban-Senzier, P. ^{[1
]}

Forget, A. ^{[5
]}

Colson, D. ^{[5
]}

Foury-Leylekian, P. ^{[1
]}

机构：

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

[2] Inst Neel, F-38042 Grenoble, France

[3] Inst Laue Langevin, F-38000 Grenoble, France

[4] Univ Paris Saclay, Univ Paris Sud, CNRS, Inst Chim Subst Nat,UPR 2301, 1 Ave Terrasse, F-91198 Gif Sur Yvette, France

[5] Univ Paris Saclay, CNRS, UMR3680, SPEC,CEA, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW B | 2020年 / 101卷 / 02期

关键词：

Iron compounds - Crystal structure - X ray diffraction analysis - Energy dispersive X ray analysis - Single crystals - Selenium compounds;

D O I：

10.1103/PhysRevB.101.020101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The understanding of the superconducting phase under pressure in the famous iron-based spin ladder BaFe2Se3 commands a perfect understanding of the structural properties. We present an accurate single crystal x-ray analysis which demonstrates that the structure admitted until now at room temperature is totally ruled out. We show that the system has a polar structure already at 300 K and is thus ferroelectric. Its structure is modified below the Ned transition and the polarization is intensified. These features unambiguously prove the multiferroic character of BaFe2Se3 as proposed theoretically. This system evidences a competition between multiferroicity and superconductivity.

引用

页数：4

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