What Does the Field Dependence of the Thermal Conductivity of the Heavy Fermion Superconductor UPt3 Tell Us about the Symmetry of the Order Parameter?
M. Houssa, M. Ausloos
DOI 10.1103/PhysRevLett.79.2879 · Physical Review Letters
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Abstract
We investigate the field dependence of the thermal conductivity κ of UPt3 single crystals for magnetic fields applied along the basal (ab) plane and along the c axis, respectively. The effect of heat carrying electrons scattered by quasiparticle excitations in the vortex cores is calculated for an anisotropic superconducting gap parameter of either E1g or E2u symmetry. It is shown that the anisotropy of the field dependence of κ allows one to probe the symmetry of the superconducting order parameter and favors the E2u gap parameter, i.e., with quadratic point nodes along the c axis.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | Pressure not reported | unknown |
| UPd2Al3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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