Temperature dependence of electronic and magnetic properties of (DOEO)₄[HgBr₄]TCE single crystals

2014/11/11 by Alisa Chernenkaya, Aleksandr Kotov, Chernenkaya, Alisa +13
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1411.2813

5 pages, 2 figures, Conference MISM-2014

arxiv created 2014/11/11 · arxiv updated 2014/11/12

Abstract

The temperature dependence of electronic and magnetic properties of the organic charge-transfer salt (DOEO)₄[HgBr₄]TCE was investigated using magnetometry. Electronic transport properties revealed three distinct phases which are related to different magnetic coupling phenomena. In the low-temperature insulating phase (T<70 K) the antiferromagnetic coupling between two distinct sites of magnetic moments causes antiferromagnetic order below the Néel temperature T_N=40 K. In the temperature region 70-120 K the (DOEO)₄[HgBr₄]TCE shows metallic-like behavior and with further increasing of temperature it becomes a bad metal due to loss of itinerant character and increase of hopping conductivity of charge carriers.

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