Magnetic structure and spin waves in the frustrated ferro-antiferromagnet Pb2VO(PO4)2

被引：0

作者：

Bettler, S. ^{[1
]}

Landolt, F. ^{[1
]}

Aksoy, O. M. ^{[1
]}

Yan, Z. ^{[1
]}

Gvasaliya, S. ^{[1
]}

Qiu, Y. ^{[2
]}

Ressouche, E. ^{[3
]}

Beauvois, K. ^{[3
]}

Raymond, S. ^{[3
]}

Ponomaryov, A. N. ^{[4
]}

Zvyagin, S. A. ^{[4
]}

Zheludev, A. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Lab Solid State Phys, CH-8093 Zurich, Switzerland

[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20878 USA

[3] Univ Grenoble Alpes, CEA, INAC MEM, F-38000 Grenoble, France

[4] Helmholtz Zentrum Dresden Rossendorf, Dresden High Magnet Field Lab HLD EMFL, D-01328 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2019年 / 99卷 / 18期

基金：

瑞士国家科学基金会;

关键词：

SQUARE LATTICE;

D O I：

10.1103/PhysRevB.99.184437

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single crystal neutron diffraction, inelastic neutron scattering, and electron spin resonance experiments are used to study the magnetic structure and spin waves in Pb2VO(PO4)(2), a prototypical layered S = 1/2 ferromagnet with frustrating next-nearest neighbor antiferromagnetic interactions. The observed excitation spectrum is found to be inconsistent with a simple square lattice model previously proposed for this material. At least four distinct exchange coupling constants are required to reproduce the measured spin wave dispersion. The degree of magnetic frustration is correspondingly revised and found to be substantially smaller than in all previous estimates.

引用

页数：6

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