RT Journal Article
T1 Electron-hopping modes in NiMn_(2)O_(4+δ) materials
A1 Schmidt, Rainer
A1 Basu, A.
A1 Brinkman, A. W.
A1 Klusek, Z.
A1 Datta, P. K.
AB The resistance versus temperature (R–T) characteristics of NiMn_(2)O_(4+δ) 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.
PB American Institute of Physics
SN 0003-6951
YR 2005
FD 2005-02-14
LK https://hdl.handle.net/20.500.14352/51564
UL https://hdl.handle.net/20.500.14352/51564
LA eng
NO © 2005 American Institute of Physics. A.B. acknowledges financial support from the Overseas Research Scholarship (ORS) scheme and the University of Durham.
NO Overseas Research Scholarship (ORS)
NO University of Durham
DS Docta Complutense
RD 22 abr 2025