Fermi surface instability at 0.4K in a heavy-fermion YbBiPt: SDW?
- Los Alamos National Lab., NM (United States)
The authors report results of resistivity measurements of heavy-fermion compound YbBiPt at ambient and hydrostatic pressures of up to {approx} 6kbars and in magnetic field up to 1 Tesla. They interpret the rise of resistivity below 0.4K as partial gaping of the Fermi surface. From the temperature dependence of resistivity they obtain the value of the weak coupling energy gap of {Delta}{sub 0}/k{sub B}T{sub c} = 1.65 {+-} 0.15. Magnetic field -- transition temperature phase diagram follows the weak coupling BCS expression remarkably well from T{sub c} to T{sub c}/4. These results support identification of 0.4K transition as a Spin Density Wave formation.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10119703
- Report Number(s):
- LA-UR-94-73; CONF-931247-2; ON: DE94006224; TRN: 94:003577
- Resource Relation:
- Conference: Strongly correlated electronic materials,Los Alamos, NM (United States),15-18 Dec 1993; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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