Dipole reorientation from bound-polaron hopping in single crystal NiO |
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| Authors: | KH Lee DJ Eisenberg |
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| Institution: | Department of Physics, Michigan Technology University, Houghton, MI 49931, USA;Department of Physics and Astonomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA |
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| Abstract: | We report observation of a first order thermal depolarization peak at 190 K in NiO single crystals which we attribute to the reorientation of Ni3+NiV2+ dipoles. Analysis of the data in terms of these bound polarons, using a non-adiabatic hopping model, yields values of activation energy, E = 0.31eV and the polaron band width, J = 8.6 × 10?6 eV. |
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