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Unusual magnetic properties induced by local structure in a quasi-one-dimensional Ising chain system: alpha-CoV2O6

Title
Unusual magnetic properties induced by local structure in a quasi-one-dimensional Ising chain system: alpha-CoV2O6
Authors
Kim, BKim, BH정윤희Min, BIJeong, YHPark, SYChoi, HCKim, K
Date Issued
Jun-2012
Publisher
APS
Abstract
We have investigated the origins of large orbitalmagnetic moment (OM) and unique magnetic anisotropy in the quasi-1Dmagnetic cobaltate, alpha-CoV2O6, employing both the ab initio band structuremethod and the microscopic cluster model calculations. We have found that the peculiar crystal electric field effect in alpha-CoV2O6 combined with the strong spin-orbit coupling induces the unusually large OM and other intriguing magnetic properties of alpha-CoV2O6. The observed 1/3 magnetization plateau in the M-H curve is explained by the spin-flip mechanism based on the MC simulation. Anomalous magnetic entropy behavior is attributed to the strong uniaxial magnetic anisotropy in the quasi-1D Ising chain system.
Keywords
QUANTUM CRITICALITY; HEAT-CAPACITY; PLATEAU; CRYSTALS; ANISOTROPY; TRANSITION; FIELD; BEHAVIOR; COV2O6; CONB2O6
URI
http://oasis.postech.ac.kr/handle/2014.oak/12272
DOI
10.1103/PHYSREVB.85.220407
ISSN
1098-0121
Article Type
ARTICLE
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