Mott type variable range hopping conduction and magnetoresistance in p-type CuIn3Te5 semiconductor compound
| Autor: | J. Galibert, Giovanni Marín, S. M. Wasim, Lahcen Essaleh, C. Rincón, S. Amhil |
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| Přispěvatelé: | Laboratory of Condensed Matter and Nanostructures, Université Cadi Ayyad [Marrakech] (UCA), Centro de Estudios de Semiconductores, Facultad de Ciencias, Facultad de Ciencias, Centro de Investigación y Tecnología de Materiales [Maracaibo], Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Magnetic ordering Magnetoresistance Electrical properties and parameters General Physics and Astronomy 02 engineering and technology 01 natural sciences Variable-range hopping Quantum interference symbols.namesake Electrical resistivity and conductivity Vacancy defect 0103 physical sciences Electrical conductivity [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] 010302 applied physics Minerals Condensed matter physics Fermi level Electrical resistivity Transition metals Atmospheric temperature range 021001 nanoscience & nanotechnology Acceptor Chemical elements Density of states symbols Hopping transport Activation energies 0210 nano-technology |
| Zdroj: | Journal of Applied Physics Journal of Applied Physics, American Institute of Physics, 2017, JOURNAL OF APPLIED PHYSICS, 122 (1), pp.015702. ⟨10.1063/1.4991004⟩ Journal of Applied Physics, 2017, JOURNAL OF APPLIED PHYSICS, 122 (1), pp.015702. ⟨10.1063/1.4991004⟩ |
| ISSN: | 0021-8979 1089-7550 |
| DOI: | 10.1063/1.4991004⟩ |
| Popis: | International audience; Variable range hopping (VRH) conduction of Mott type for a constant and non-vanishing density of states at the Fermi level is observed over a wide range of temperature between 45 and 210 K in the ordered defect compound CuIn3Te5 (CIT135). For this type of electrical conduction at a very high temperature, not reported before in elemental, II-VI, and I-III-VI2 compound semiconductors, we employed three different methods to analyze the data and to confirm this behavior. The occurrence of VRH at very high temperatures is explained as due to the presence of the electrically inactive (In+2Cu + 2 V−1Cu) donor-acceptor defect pairs in CIT135. This defect-pair partially annihilates the shallow acceptor defect state Cu vacancy, which is responsible for the activated electrical conductivity observed in p-type ternary I-III-VI2 chalcopyrite compounds in the temperature range of liquid nitrogen. In such conditions, the only acceptor level available for electrical conduction in CIT135 is a deep acceptor state whose activation energy is about 200 meV and cannot be activated below about 200 K. Hence, the VRH conduction mechanism dominates the electrical properties of this material up to about 200 K. The study of the temperature and magnetic field dependence of the magnetoresistance (MR) up to 27 T is made by taking into consideration different theoretical models. To explain the negative MR at lower fields, the theory based on quantum interference is used. At higher magnetic fields, the MR becomes positive and is explained with the model based on the shrinkage of the wave function. |
| Databáze: | OpenAIRE |
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