relaxation and thermal conductivity of hot and thermal quasiparticles and fermi liquid interactions in d-wave superconductors
نویسندگان
چکیده
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 data. furthermore, we calculate thermal conductivity coefficients of ybco in terms of antinodal quasiparticle relaxation rates which are in accordance with experimental results.
منابع مشابه
Relaxation 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 کاملThermal conductivity and competing orders in d-wave superconductors
We derive the expression for the thermal conductivity κ in the low-temperature limit T → 0 in d-wave superconductors, taking into account the presence of competing orders such as spin-density wave, is-pairing, etc. . The expression is used for analyzing recent experimental data in La2−xSrxCuO4. Our analysis strongly suggests that competing orders can be responsible for anomalies in behavior of ...
متن کاملDAMPING OF COLLECTIVE MODES AND QUASIPARTICLES IN d-WAVE SUPERCONDUCTORS
The two-dimensional d-wave superconducting state of the high temperature superconductors has a number of different elementary excitations: the spin-singlet Cooper pairs, the spin S = 1/2 fermionic quasiparticles, and a bosonic S = 1 resonant collective mode, φα, at the antiferromagnetic wavevector. Although the φα quanta are strongly coupled to the gapped quasiparticles near the (π, 0), (0, π) ...
متن کاملSignatures of the Nematic Ordering Transitions in the Thermal Conductivity of D-wave Superconductors
We study experimental signatures of the Ising nematic quantum phase transition in d-wave superconductors, associated with the change of lattice symmetry from tetragonal to orthorhombic in the superconducting state. The characteristic feature of this transition is that the ratio between the Fermi velocity vF and gap velocity v∆ flows to a maximally anisotropic fixed point, i.e. the renormalizati...
متن کاملWeak-field thermal hall conductivity in the mixed state of d-wave superconductors.
Thermal transport in the mixed state of a d-wave superconductor is considered within the weak-field regime. We express the thermal conductivity, kappa(xx), and the thermal Hall conductivity, kappa(xy), in terms of the cross section for quasiparticle scattering from a single vortex. Solving for the cross section (neglecting the Berry phase contribution and the anisotropy of the gap nodes), we ob...
متن کاملRenormalization of thermal conductivity of disordered d-wave superconductors by impurity-induced local moments
The low-temperature thermal conductivity κ0/T of d-wave superconductors is generally thought to attain a “universal” value independent of disorder at sufficiently low temperatures, providing an important measure of the magnitude of the gap slope near its nodes. We discuss situations in which this inference can break down because of competing order, and quasiparticle localization. Specifically, ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
journal of sciences, islamic republic of iranناشر: university of tehran
ISSN 1016-1104
دوره 23
شماره 3 2012
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023