Substitutional effects on the electronic transport of the Kondo insulator Ce{sub 3}Bi{sub 4}Pt{sub 3}
The resistivity {rho} and thermoelectric power S of the doped Kondo insulator (Ce{sub 1-x}La{sub x}){sub 3}Bi{sub 4}Pt{sub 3} are examined to determine the effects of doping on the narrow gap exhibited by this compound. With increasing La concentration the energy gap progressively disappears in both {rho} and S and band-like transport develops below 25 K. The T-0 transport energy gap as determined from either {rho} or S scales with the single-impurity Kondo energy scale T{sub K} as determined from magnetic susceptibility measurements, independently of x for x {le} 0.25. This result strongly suggests that the gap arises from band hybridization that is driven by Kondo-like many-body correlations rather than from single-electronic interactions.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10139094
- Report Number(s):
- LA-UR--94-1073; CONF-940874--2; ON: DE94009331
- Country of Publication:
- United States
- Language:
- English
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