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Título:
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Electron-hopping modes in NiMn_(2)O_(4+?) materials
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Autores:
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Schmidt, Rainer ;
Basu, A. ;
Brinkman, A. W. ;
Klusek, Z. ;
Datta, P. K.
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Tipo de documento:
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texto impreso
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Editorial:
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American Institute of Physics, 2005-02-14
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Electricidad
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Materia = Ciencias: Física: Electrónica
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Tipo = Artículo
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Resumen:
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The resistance versus temperature (R–T) characteristics of NiMn_(2)O_(4+?) thermistors have been analyzed. In the literature, electron transport in manganate spinels is commonly described by a small-polaron model for nearest neighbor hopping, but variable range hopping (VRH) has not been considered so far. In this study differentiated R–T data were analyzed, allowing a clear distinction between different modes of hopping. In pressed pellets and thick screen printed films conduction was well described by a VRH model for a parabolic density of states, which was confirmed by scanning tunneling spectroscopy.
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En línea:
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https://eprints.ucm.es/33140/1/Schmidt12.libre.pdf
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