Study of anisotropic magnetoresistance in the thermodynamic fluctuation regime of single crystals of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x}
- Ludwig Boltzmann Institut fuer Festkoerperphysik, Wien (Austria)
- Univ. of Wollongong (Australia); and others
Measurements of the in-plane and out-of-plane magnetoresistance in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x} single crystals with a critical temperature T{sub c} = 93 K are reported for temperatures between T{sub c} and 200 K and in magnetic fields up to 13 T. Both the transverse and the longitudinal in-plane magnetoresistance are positive and originate entirely from the suppression of superconducting fluctuations by the magnetic field. The longitudinal out-of-plane magnetoresistance is negative at all temperatures and magnetic fields. As possible origins two recent models are discussed, the reduction of the quasiparticle density of states due to condensation into superconducting fluctuations and thermally activated transport over an interplane pseudogap.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 457258
- Report Number(s):
- CONF-960808-; ISSN 0022-2291; TRN: 97:001035-0080
- Journal Information:
- Journal of Low Temperature Physics, Vol. 105, Issue 3-4; Conference: 3. international conference on physics and chemistry of molecular and oxide superconductors, Karlsruhe (Germany), 2-6 Aug 1996; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Scaling properties of the anisotropic magnetoresistivity of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 thin films below T sub c
Effect of the magnetic field on the {ital c}-axis resistance peak in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital x}} epitaxial films