Direct observation of optical magnons in YBa2Cu3O6.2

被引：87

作者：

Reznik, D

Bourges, P

Fong, HF

Regnault, LP

Bossy, J

Vettier, C

Milius, DL

Aksay, IA

Keimer, B

机构：

[1] CEA SACLAY,CNRS,CEA,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE

[2] PRINCETON UNIV,DEPT PHYS,PRINCETON,NJ 08544

[3] CEA GRENOBLE,GRP MAGNETISME & DIFFRACT NEUTRON,SERV PHYS STAT MAGNETISME & SUPERCONDUCT,F-38054 GRENOBLE 9,FRANCE

[4] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

[5] EUROPEAN SYNCHROTRON RES FACIL,F-38043 GRENOBLE,FRANCE

[6] PRINCETON UNIV,DEPT CHEM ENGN,PRINCETON,NJ 08544

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.53.R14741

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used high-energy inelastic neutron scattering to detect optical magnons directly in antiferromagnetic YBa2Cu3O6.2. The optical magnon gap is 67+/-5 meV. This implies an intrabilayer superexchange constant perpendicular to the CuO2 layers of J(perpendicular to) = 0.08 J(parallel to) where J(parallel to) is the in-plane nearest-neighbor superexchange constant.

引用

页码：14741 / 14744

页数：4

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