Magnetoresistance of superconducting single crystals of the electron-doped compound Nd[sub 2[minus][ital x]]Ce[sub [ital x]]CuO[sub 4[minus][ital y]]
- Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (United States)
Magnetoresistance measurements on superconducting Nd[sub 2[minus][ital x]]Ce[sub [ital x]]CuO[sub 4[minus][ital y]] single crystals with [ital T][sub [ital c]] varying from 7 to 19 K were made with magnetic fields [ital H] applied parallel ([ital H][parallel][ital c]) and perpendicular ([ital H][perpendicular][ital c]) to the tetragonal c axis. For [ital H][parallel][ital c], the resistive superconductive transition curves gradually develop structure at low temperatures and high magnetic fields as [ital T][sub [ital c]] decreases. For the crystals with [ital T][sub [ital c]][approx lt]11 K, this structure evolves into a double resistive transition with a resistivity maximum near [ital T][approx]1.1 K, followed by an extremely sharp transition into the superconducting state. In this region, the resistivity exhibits non-Ohmic behavior for low current densities and Ohmic behavior for larger measuring currents. The resistivity for [ital H][perpendicular][ital c] does not exhibit any anomalous behavior or a maximum. The irreversibility line inferred from these measurements is sample dependent.
- DOE Contract Number:
- FG03-86ER45230
- OSTI ID:
- 5538729
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 48:22; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
MAGNETORESISTANCE
CERIUM OXIDES
COPPER OXIDES
CRITICAL TEMPERATURE
CUPRATES
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
MONOCRYSTALS
NEODYMIUM OXIDES
CERIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
ELECTRICAL PROPERTIES
MATERIALS
NEODYMIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
665411* - Basic Superconductivity Studies- (1992-)