Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet
Journal Article
·
· Physical Review Letters
- Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
- Ames Lab. and Iowa State Univ., Ames, IA (United States); ; Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Division
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.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-07CH11358; AC05-00OR22725
- OSTI ID:
- 1406559
- Alternate ID(s):
- OSTI ID: 1395918; OSTI ID: 1471836
- Report Number(s):
- IS-J-9471; PRLTAO; TRN: US1703041
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 14; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 22 works
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