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Is a doped 'Kondo' insulator different from doped Silicon? | J. F. DiTusa
; K. Friemelt
; E. Bucher
; G. Aeppli
; A.P. Ramirez
; | Date: |
2 Dec 1996 | Subject: | Strongly Correlated Electrons | cond-mat.str-el | Affiliation: | Department of Physics and Astronomy, Louisiana State University), K. Friemelt, E. Bucher (University of Konstanz, Fakultat fur Physik), G. Aeppli (NEC), and A.P. Ramirez (Bell Laboratories, Lucent Technologies | Abstract: | We have observed the metal-insulator transition in the strongly correlated insulator FeSi with the chemical substitution of Al at the Si site. The magnetic susceptibility, heat capacity, and field dependent conductivity are measured for Al concentrations ranging from 0 to 0.08. For concentrations greater than 0.01 we find metallic properties quantitatively similar to those measured in Si:P with the exception of a greatly enhanced quasiparticle mass. Below 2 K the temperature and field dependent conductivity can be completely described by the theory of disordered Fermi Liquids. | Source: | arXiv, cond-mat/9701005 | Services: | Forum | Review | PDF | Favorites |
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