Calorimetric measurements of nuclear quadrupole interactions in tellurium-doped bismuth |
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| Authors: | P E Gregers-Hansen M Krusius G R Pickett |
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| Affiliation: | (1) Department of Technical Physics, Helsinki University of Technology, Otaniemi, Finland;(2) Present address: Physics Laboratory I, H. C. Ørsted Institute, University of Copenhagen, Copenhagen, Denmark;(3) Present address: Department of Physics, University of Lancaster, Lancaster, United Kingdom |
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| Abstract: | By doping bismuth with tellurium to increase the charge carrier density and thus speed up the slow nuclear spin-lattice relaxation the nuclear quadrupole heat capacity becomes measurable in contrast to pure bismuth. The quadrupole heat capacity is greatly influenced by doping, increasing by 64% over the pure bismuth value on the addition of 0.23 at. % of tellurium. This results from a local asymmetric distortion of the valence electron states of the bismuth ions around the impurity site. |
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