Published February 22, 1988
| Version v1
Journal article
Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems
Creators
- 1. Department of Physics, Faculty of Science, Hokkaido University, Sapporo 060, Japan
Description
The heat capacity of La/sub 2-//sub x/Ba/sub x/CuO4 was investigated between 0.8 and 10 K. The linear temperature term γT of the heat capacity is absent in the antiferromagnetic-ordered region of x≤0.02. γ increases abruptly from x = 0.02 to x = 0.04 where the system is still insulating at low temperature, and seems to saturate at the order of 5 mJ/mol K2 in the superconducting region of x≥0.05. The correlation between magnetic order and vanishing γT term and the existence of a finite γT term for Ba doping give support to the resonating-valence-bond picture
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 60
- Journal Issue
- 8
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 724-727
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19049517
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANTIFERROMAGNETISM; BARIUM COMPOUNDS; COPPER OXIDES; ELECTRICAL INSULATORS; LANTHANUM COMPOUNDS; SPECIFIC HEAT; SUPERCONDUCTORS; ULTRALOW TEMPERATURE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRICAL EQUIPMENT; EQUIPMENT; MAGNETISM; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS