Gap Symmetry and Thermal Conductivity in Nodal Superconductors
نویسنده
چکیده
There are now many nodal superconductors in heavy fermion (HF) systems, charge conjugated organic metals, high Tc cuprates and ruthenates. On the other hand only few of them have well established ∆(k). We present here a study of the angular dependent thermal conductivity in the vortex state of some of the nodal superconductors. We hope it will help to identify the nodal directions in ∆(k) of UPd2Al3 , UNi2Al3, UBe13 and URu2Si2. PACS numbers: 74.60.Ec, 74.25.Fy, 74.70.Tx Typeset using REVTEX
منابع مشابه
Gap Symmetry and Thermal Conductivity in Nodal Superconductors
Here we consider the universal heat conduction and the angular dependent thermal conductivity in the vortex state for a few nodal superconductors. We present the thermal conductivity as a function of impurity concentration and the angular dependent thermal conductivity in a few nodal superconductors. This provides further insight in the gap symmetry of superconductivity in Sr2RuO4 and UPd2Al3.
متن کاملپارامتر نظم ابررسانایی در فلز CeIrIn5
To understand the mechanism of superconductivity in unconventional super onductors is one of the big challenges in the field of superconductivity. Based on the BCS theory, there is a direct relation between the pairing mechanism and the symmetry of the order parameter. Therefore, identification of the structure of the superconducting gap or the order parameter provides key information on the pa...
متن کاملElectronic Raman Spectra of Superconducting Borocar- bides
– Recently the symmetry of superconducting energy gap ∆(k) is one of outstanding issues. We propose here an anisotropic s-wave order parameter (or s+ g-model) for LuNi2B2C and YNi2B2C and study the electronic Raman spectra of these systems at T=0 K. In spite of the dominant s-wave component, the present model has nodes in ∆(k) and can describe consistently the √ H dependence of the electronic s...
متن کاملشبه ذرات گرهای ابررساناهای دمای بالا به عنوان حاملین حرارت
In the quest for understanding correlated electrons, high-temperature superconductivity remains a formidable challenge and a source of insight. This paper briefly recalls the central achievement by the study of heat transport at low temperatures. At very low temperatures, nodal quasi-particles of the d-wave superconducting gap become the main carriers of heat. Their thermal conductivity is un...
متن کاملRelaxation and Thermal Conductivity of Hot and Thermal Quasiparticles and Fermi Liquid Interactions in d-wave Superconductors
In this paper, we calculate theoretically the relaxation rates of hot, thermal and antinodal quasiparticles by using Fermi’s golden rule. The transition probabilities at low temperatures express in terms of Bogoliubov coefficients, singlet and triplet scattering amplitudes and dimensionless Landau parameters. The values of Landau parameters may be determined by comparison with the experimental ...
متن کامل