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Heat-Capacity Measurements of Energy-Gap Nodes of the Heavy-Fermion Superconductor CeIrIn5 Deep inside the Pressure-Dependent Dome Structure of Its Superconducting Phase Diagram.
- Source :
-
Physical Review Letters . 1/13/2012, Vol. 108 Issue 2, p027001-1-027001-5. 5p. - Publication Year :
- 2012
-
Abstract
- We use heat-capacity measurements as a function of field rotation to identify the nodal gap structure of CeIrIn5 at pressures to 2.05 GPa, deep inside its superconducting dome. A fourfold oscillation in the heat capacity at 0.3 K is observed for all pressures, but with its sign reversed between 1.50 and 0.90 GPa. On the basis of recent theoretical models for the field-angle-dependent specific heat, all data, including the sign reversal, imply a Due to image rights restrictions, multiple line equation(s) cannot be graphically displayed. order parameter with nodes along [110], which constrains theoretical models of the pairing mechanism in CeIrIn5. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 108
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 71856040
- Full Text :
- https://doi.org/10.1103/PhysRevLett.108.027001