Publication Date

10-2-2017

Department

Physics and Astronomy; Ames Laboratory

Campus Units

Physics and Astronomy, Ames Laboratory

DOI

10.1103/PhysRevLett.119.147201

Journal Title

Physical Review Letters

Volume Number

119

Issue Number

14

First Page

147201-1

Last Page

147201-5

Abstract

Inelastic neutron scattering measurements on the itinerant antiferromagnet CaCo2−yAs2 at a temperature of 8 K reveal two orthogonal planes of scattering perpendicular to the Co square lattice in reciprocal space, demonstrating the presence of effective one-dimensional spin interactions. These results are shown to arise from near-perfect bond frustration within the J1-J2 Heisenberg model on a square lattice with ferromagnetic J1 and hence indicate that the extensive previous experimental and theoretical study of the J1-J2 Heisenberg model on local-moment square spin lattices should be expanded to include itinerant spin systems.

DOE Contract Number(s)

AC02-07CH11358

Department of Energy Subject Categories

36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Share

COinS