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Spin disorder in an Ising honeycomb chain cobaltate.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Feb2014, Vol. 89 Issue 5, p054431-1-054431-5. 5p. - Publication Year :
- 2014
-
Abstract
- We report on a member of the spin-disordered honeycomb lattice antiferromagnet in a quasi-one-dimensional cobaltate Ba3Co2O6(CO3)0.7. Resistivity exhibits as semimetallic along the face-sharing CoO6 chains. Magnetic susceptibility shows strongly anisotropic Ising-spin character with the easy axis along the chain due to significant spin-orbit coupling and a trigonal crystal field. Nevertheless, 135Ba NMR detects no indication of the long-range magnetic order down to 0.48 K. Marginally itinerant electrons possess large entropy and low-lying excitations with a Wilson ratio RW=116, which highlight interplays of charge, spin, and orbital in the disordered ground state. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 89
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 95505660
- Full Text :
- https://doi.org/10.1103/PhysRevB.89.054431