Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2

A. Sapkota; B. G. Ueland; V. K. Anand; N. S. Sangeetha; D. L. Abernathy; M. B. Stone; J. L. Niedziela; D. C. Johnston; A. Kreyssig; A. I. Goldman; R. J. McQueeney

doi:10.1103/PhysRevLett.119.147201

Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2

A. Sapkota, B. G. Ueland, V. K. Anand, N. S. Sangeetha, D. L. Abernathy, M. B. Stone, J. L. Niedziela, D. C. Johnston, A. Kreyssig, A. I. Goldman, R. J. McQueeney

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

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.

Original language	English
Article number	147201
Journal	Physical Review Letters
Volume	119
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.119.147201
State	Published - Oct 2 2017

Funding

We are grateful for assistance of G. S. Tucker (Paul Scherrer Institute), Abhishek Pandey (Texas A&M University), Yongbin Lee (Ames Laboratory), Jong Keum (X-ray Laboratory, SNS, ORNL), Songxue Chi (TAX, HFIR, ORNL), and Rafael M. Fernandes (University of Minnesota). Work at the Ames Laboratory was supported by the U.S. Department of Energy, Basic Energy Sciences, Division of Materials Sciences and Engineering, under Contract No. DE-AC02-07CH11358. This research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.

Funders	Funder number
U.S. Department of Energy
Basic Energy Sciences
Division of Materials Sciences and Engineering	DE-AC02-07CH11358

Access to Document

10.1103/PhysRevLett.119.147201

Cite this

Sapkota, A., Ueland, B. G., Anand, V. K., Sangeetha, N. S., Abernathy, D. L., Stone, M. B., Niedziela, J. L., Johnston, D. C., Kreyssig, A., Goldman, A. I., & McQueeney, R. J. (2017). Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2. Physical Review Letters, 119(14), Article 147201. https://doi.org/10.1103/PhysRevLett.119.147201

@article{5534f43033bf4dc69109074b64c26e6d,

title = "Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2",

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.",

author = "A. Sapkota and Ueland, {B. G.} and Anand, {V. K.} and Sangeetha, {N. S.} and Abernathy, {D. L.} and Stone, {M. B.} and Niedziela, {J. L.} and Johnston, {D. C.} and A. Kreyssig and Goldman, {A. I.} and McQueeney, {R. J.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = oct,

day = "2",

doi = "10.1103/PhysRevLett.119.147201",

language = "English",

volume = "119",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "14",

}

TY - JOUR

T1 - Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2

AU - Sapkota, A.

AU - Ueland, B. G.

AU - Anand, V. K.

AU - Sangeetha, N. S.

AU - Abernathy, D. L.

AU - Stone, M. B.

AU - Niedziela, J. L.

AU - Johnston, D. C.

AU - Kreyssig, A.

AU - Goldman, A. I.

AU - McQueeney, R. J.

PY - 2017/10/2

Y1 - 2017/10/2

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85030781665&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.119.147201

DO - 10.1103/PhysRevLett.119.147201

M3 - Article

C2 - 29053286

AN - SCOPUS:85030781665

SN - 0031-9007

VL - 119

JO - Physical Review Letters

JF - Physical Review Letters

IS - 14

M1 - 147201

ER -

Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this