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), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:22; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL TEMPERATURE
CRYSTALS
CUPRATES
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
MAGNETORESISTANCE
MATERIALS
MONOCRYSTALS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE