Superconductivity of graphite intercalation compounds with alkali-metal amalgams
Creators
- 1. The Institute for Solid State Physics, The University of Tokyo, Roppongi, Minato-ku, Tokyo, 106 Japan
Description
Superconductivity of the alkali-metal amalgam graphite intercalation compounds of stage 1 (C4KHg, C4RbHg) and stage 2 (C8KHg, C8RbHg) has been studied as well as that of the pristine amalgams (KHg, RbHg). The transition temperatures are 0.73, 0.99, 1.90, and 1.40 K for C4KHg, C4RbHg, C8KHg, and C8RbHg, respectively. The critical-field anisotropy ratio H/sup parallel//sub c/2/H/sup perpendicular//sub c/2 is about 10 for the stage 1 and about 15 to 40 for the stage 2. It is argued that electrons in the intercalant bands rather than the graphitic bands play the main role in the superconductivity. An interesting feature is that the stage-2 compound, which has a lower density of states at the Fermi level, has a higher transition temperature than the corresponding state-1 compound
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 25
- Journal Issue
- 7
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 4583-4592
- ISSN
- 0163-1829
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 14754246
- Subject category
- S36: MATERIALS SCIENCE; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALKALI METAL COMPOUNDS; ANISOTROPY; CLATHRATES; CRITICAL FIELD; ENERGY-LEVEL DENSITY; EXPERIMENTAL DATA; FERMI LEVEL; GRAPHITE; MERCURY ALLOYS; SUPERCONDUCTIVITY; TRANSITION TEMPERATURE; ULTRALOW TEMPERATURE
- Descriptors DEC
- ALLOYS; CARBON; DATA; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; ENERGY LEVELS; INFORMATION; MAGNETIC FIELDS; NONMETALS; NUMERICAL DATA; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES