Anomalous enhancement of the electron dephasing rate from magnetoresistance data in Bi sub 2 Sr sub 2 CuO sub 6

Journal Article · Mon Aug 05 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.761· OSTI ID:5280004

Jing, T W; Ong, N P; Ramakrishnan, T V ^[1]; Tarascon, J M; Remschnig, K ^[2]

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1. Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ (USA)
2. Bell Communications Research, 331 Newman Springs Road, Redbank, NJ (USA)

The low-temperature magnetoresistance (MR) in Bi{sub 2}Sr{sub 2}CuO{sub 6} is highly anisotropic. By fitting the orbital MR with the weak-localization expression, we derive a carrier dephasing rate 1/{tau}{sub {phi}} that varies as {ital T}{sup {minus}1/3}. This implies that the energy levels are greatly broadened at low temperatures. Both the energy scale derived from 1/{tau}{sub {phi}} vs {ital T} and the behavior of the longitudinal MR suggest a strong coupling between the holes and the Cu spins. We discuss implications of the large dephasing rate, and contrast the MR with that of conventional disordered metals.

• OSTI ID: 5280004
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:6; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSOLUTE ZERO TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
ANGULAR MOMENTUM
ANISOTROPY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COPPER
COPPER COMPOUNDS
COUPLING
CUPRATES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
EXTRAPOLATION
HIGH-TC SUPERCONDUCTORS
HOLES
INFORMATION
MAGNETORESISTANCE
METALS
NUMERICAL DATA
NUMERICAL SOLUTION
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SPIN
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE