Temperature Dependence of Electronic and Magnetic Properties of (DOEO)₄[HgBr₄]·TCE Single Crystals

Abstract:

The temperature dependence of electronic and magnetic properties of the organic charge-transfer salt (DOEO)₄[HgBr₄]·TCE was investigated using magnetometry. The magnetic susceptibility shows a maximum at 40 K followed by an onset of a pronounced increase at 70 K and a constant behavior above 120 K. Implications on the charge carrier density are discussed. Combining the magnetometry with resistivity and ESR measurements we propose a sequence of insulating, metallic and semiconducting behavior with increasing temperature. Our results indicate that (DOEO)₄[HgBr₄]·TCE is close to the boundary between an insulating and conducting ground state.

• Periodical: Solid State Phenomena (Volumes 233-234)
• Pages: 173-176
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.233-234.173
• Online since: July 2015
• Authors: Alisa Chernenkaya*, Oksana Koplak, Katerina Medjanik, Aleksandr Kotov, Roman Morgunov, Eduard Yagubskii, Hans Joachim Elmers, Gerd Schönhense
• Keywords: Antiferromagnetism, Charge-Transfer Salts, DOEO, Phase Diagram, SQUID

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