Variable Range Hopping Conduction in p-Type CuInTe2
M. Iqbal
Laboratoire de Physique de la Matière Condensée et Service National des Champs Magnétiques Pulsés, INSA, 135, Avenue de Rangueil, F-31077 Toulouse Cedex, France
Search for more papers by this authorJ. Galibert
Laboratoire de Physique de la Matière Condensée et Service National des Champs Magnétiques Pulsés, INSA, 135, Avenue de Rangueil, F-31077 Toulouse Cedex, France
Search for more papers by this authorS.M. Wasim
Centro de Estudios de Semiconductores, Facultad de Ciencias, Universidad de los Andes, VE-5101 Merida, Venezuela
Search for more papers by this authorE. Hernandez
Departamento de Física, Facultad Experimental de Ciencias, La Universidad del Zulia, VE-4011 Maracaibo, Venezuela
Search for more papers by this authorP. Bocaranda
Centro de Estudios de Semiconductores, Facultad de Ciencias, Universidad de los Andes, VE-5101 Merida, Venezuela
Search for more papers by this authorJ. Leotin
Laboratoire de Physique de la Matière Condensée et Service National des Champs Magnétiques Pulsés, INSA, 135, Avenue de Rangueil, F-31077 Toulouse Cedex, France
Search for more papers by this authorM. Iqbal
Laboratoire de Physique de la Matière Condensée et Service National des Champs Magnétiques Pulsés, INSA, 135, Avenue de Rangueil, F-31077 Toulouse Cedex, France
Search for more papers by this authorJ. Galibert
Laboratoire de Physique de la Matière Condensée et Service National des Champs Magnétiques Pulsés, INSA, 135, Avenue de Rangueil, F-31077 Toulouse Cedex, France
Search for more papers by this authorS.M. Wasim
Centro de Estudios de Semiconductores, Facultad de Ciencias, Universidad de los Andes, VE-5101 Merida, Venezuela
Search for more papers by this authorE. Hernandez
Departamento de Física, Facultad Experimental de Ciencias, La Universidad del Zulia, VE-4011 Maracaibo, Venezuela
Search for more papers by this authorP. Bocaranda
Centro de Estudios de Semiconductores, Facultad de Ciencias, Universidad de los Andes, VE-5101 Merida, Venezuela
Search for more papers by this authorJ. Leotin
Laboratoire de Physique de la Matière Condensée et Service National des Champs Magnétiques Pulsés, INSA, 135, Avenue de Rangueil, F-31077 Toulouse Cedex, France
Search for more papers by this authorAbstract
Mott type variable range hopping conduction has been observed in a wide temperature range (1.6 to 100 K) in several barely insulating single-crystalline samples of p-type compensated CuInTe2. In the less doped sample, a crossover to Efros-Shklovskii type variable range hopping conduction is found by lowering the temperature below 18 K, an unusually high temperature for this type of phenomenon. The crossover temperature Tc then deduced is not so far from that one can calculate.
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