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Title: Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo 2 - y As 2

Abstract

Inelastic neutron scattering measurements on the itinerant antiferromagnet CaCo 2–yAs 2 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. Here, these results are shown to arise from near-perfect bond frustration within the J 1–J 2 Heisenberg model on a square lattice with ferromagnetic J 1 and hence indicate that the extensive previous experimental and theoretical study of the J 1–J 2 Heisenberg model on local-moment square spin lattices should be expanded to include itinerant spin systems.

Authors:
 [1];  [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4];  [1];  [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States); ; Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Division
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1406559
Alternate Identifier(s):
OSTI ID: 1395918; OSTI ID: 1471836
Report Number(s):
IS-J-9471
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1703041
Grant/Contract Number:  
AC02-07CH11358; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 14; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; frustrated magnetism; magnetism; superconductivity

Citation Formats

Sapkota, A., Ueland, B. G., Anand, V. K., Sangeetha, N. S., Abernathy, Douglas L., Stone, Matthew B., Niedziela, Jennifer L., Johnston, D. C., Kreyssig, A., Goldman, A. I., and McQueeney, R. J. Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.119.147201.
Sapkota, A., Ueland, B. G., Anand, V. K., Sangeetha, N. S., Abernathy, Douglas L., Stone, Matthew B., Niedziela, Jennifer L., Johnston, D. C., Kreyssig, A., Goldman, A. I., & McQueeney, R. J. Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2. United States. doi:10.1103/PhysRevLett.119.147201.
Sapkota, A., Ueland, B. G., Anand, V. K., Sangeetha, N. S., Abernathy, Douglas L., Stone, Matthew B., Niedziela, Jennifer L., Johnston, D. C., Kreyssig, A., Goldman, A. I., and McQueeney, R. J. Mon . "Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2". United States. doi:10.1103/PhysRevLett.119.147201. https://www.osti.gov/servlets/purl/1406559.
@article{osti_1406559,
title = {Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo2-yAs2},
author = {Sapkota, A. and Ueland, B. G. and Anand, V. K. and Sangeetha, N. S. and Abernathy, Douglas L. and Stone, Matthew B. and Niedziela, Jennifer L. and Johnston, D. C. and Kreyssig, A. and Goldman, A. I. and McQueeney, R. J.},
abstractNote = {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. Here, 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.},
doi = {10.1103/PhysRevLett.119.147201},
journal = {Physical Review Letters},
number = 14,
volume = 119,
place = {United States},
year = {2017},
month = {10}
}

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