The effect of high pressure on the electrical and transport properties of the InSb-MnSb magnetic eutectic composition

Author:

Kochura A. V.1ORCID,Dzhamamedov R. G.2,Mekhiya A. B.3,Oveshnikov L. N.3,Arslanov T. R.2ORCID,Rodionov V. V.1,Alam M.4,Kuzmenko A. P.1,Davydov A. B.3,Aronzon B. A.3

Affiliation:

1. Regional Centre of Nanotechnology, South-West State University, 305040 Kursk, Russia

2. Amirkhanov Institute of Physics, Daghestan Scientific Center, Russian Academy of Sciences, 367003 Makhachkala, Russia

3. P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia

4. Bangamata Sheikh Fojilatunnesa Mujib Science and Technology University, Jamalpur, Bangladesh

Abstract

In this work we studied transport properties of eutectic InSb-MnSb crystals with oriented MnSb needle-like inclusions under a hydrostatic pressure up to P = 8 GPa and after its application. We show that the pressure-induced variation of the samples resistivity and transport parameters at room temperature can be interpreted in the terms of crystal phase transition of the InSb matrix. We argue that the irreversibility of this transition, deduced from transport measurements, may stem from the composite nature of the crystals studied. The resistivity of the samples subjected to high pressures increases upon cooling, which can be a consequence of the increased disorder accompanying the irreversible transition. Magnetotransport data for these samples suggest that charge carriers interact with a low-temperature magnetic phase. The latter can be formed by isolated Mn atoms in the InSb matrix.

Funder

Russian Science Foundation

Ministry of Science and Higher Education of the Russian Federation

Publisher

AIP Publishing

Subject

General Physics and Astronomy

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