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

Journal Article · · Physical Review Letters
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  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

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
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (4)

Coexistence of metallic and nonmetallic properties in the pyrochlore Lu2Rh2O7 journal March 2019
Alkali counterions tune diruthenium( iii , iii )-based ferrimagnetic chain structured antiferromagnets exhibiting step-like hysteresis loops journal January 2019
Signatures of coupling between spin waves and Dirac fermions in YbMnBi 2 journal January 2020
Coexistence of metallic and nonmetallic properties in the pyrochlore Lu$_2$Rh$_2$O$_7$ text January 2019