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Uniaxial Strain Effects on Superconducting Transition in Y0.98Ca0.02Ba2Cu4O8
- Source :
- Journal of the Physical Society of Japan. 85:024711
- Publication Year :
- 2016
- Publisher :
- Physical Society of Japan, 2016.
-
Abstract
- The effects of uniaxial strain and hydrostatic pressure on Y0.98Ca0.02Ba2Cu4O8 [called Y0.98(Ca0.02)-124] are investigated via AC magnetic measurements under stress corresponding to a pressure of (at most) 20 GPa. Hydrostatic contraction results in the largest enhancement of the superconducting transition temperature (Tc), whose maximum is 99 K, which is slightly lower than the maximum Tc achieved in YBa2Cu4O8 (called Y-124). The Meissner signal disappears at a hydrostatic pressure of approximately 15 GPa. This pressure region representing the Meissner signal is reduced by the out-of-plane contraction (along the c-axis), whereas it is increased by the in-plane contraction (along the c-plane). In the case of Y-124, both uniaxial contractions result in the disappearance of the Meissner signal at approximately 10 GPa prior to reaching the overdoped region. However, by doping Ca into the Y-site, we could investigate uniaxial strain effects characteristic of the so-called 124 structure without causing the stre...
- Subjects :
- Superconductivity
Magnetic measurements
Materials science
Strain (chemistry)
Condensed matter physics
Doping
Hydrostatic pressure
General Physics and Astronomy
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
law.invention
Stress (mechanics)
law
0103 physical sciences
Superconducting transition temperature
Hydrostatic equilibrium
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 13474073 and 00319015
- Volume :
- 85
- Database :
- OpenAIRE
- Journal :
- Journal of the Physical Society of Japan
- Accession number :
- edsair.doi...........829e53212df30bb18149eccbb3930c98