Indexed by: Journal paper

First Author: B Cheng

Correspondence Author: NL Wang

Co-author: BF Hu,JL Luo,P Zheng,YG Shi,G Xu,ZG Chen,AF Fang,T Dong,RH Yuan

Journal: Physical Review B

Included Journals: SCI

Discipline: 物理学

Document Type: J

Volume: 85

Issue: 14

Page Number: 144426

ISSN No.: 2469-9950

Date of Publication: 2012-04-25

Impact Factor: 3.767

Abstract: CaCo 2 As 2, a ThCr 2 Si 2-structure compound, undergoes an antiferromagnetic transition at T N= 76 K with the magnetic moments being aligned parallel to the c axis. Electronic transport measurement reveals that the coupling between conducting carriers and magnetic order in CaCo 2 As 2 is much weaker compared to the parent compounds of iron pnictide. Applying magnetic field along the c axis induces two successive spin-flop transitions in its magnetic state. The magnetization saturation behaviors with H∥ c and H∥ a b at 10 K indicate that the antiferromagnetic coupling along the c direction is very weak. The interlayer antiferromagntic coupling constant J c is estimated to be about 2 meV.

Links to published journals: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.85.144426