Theoretical Model to Explain Excess of Quasiparticles in Superconductors
نویسندگان
چکیده
منابع مشابه
Stimulated quasiparticles in spin-split superconductors
P. Virtanen,1,2 T. T. Heikkilä,2 and F. S. Bergeret3,4 1Low Temperature Laboratory, Department of Applied Physics, P.O. Box 15100, FI-00076 Aalto University, Finland 2University of Jyvaskyla, Department of Physics and Nanoscience Center, P.O. Box 35, FI-40014 University of Jyväskylä, Finland 3Centro de Fı́sica de Materiales (CFM-MPC), Centro Mixto CSIC-UPV/EHU, Manuel de Lardizabal 5, E-20018 Sa...
متن کاملModel of quasiparticles coupled to a frequency-dependent charge-density-wave order parameter in cuprate superconductors.
We investigate a model where superconducting electrons are coupled to a frequency dependent charge-density wave order parameter Delta_{r}(omega). Our approach can reconcile the simultaneous existence of low-energy Bogoljubov quasiparticles and high energy electronic order as observed in scanning tunneling microscopy (STM) experiments. The theory accounts for the contrast reversal in the STM spe...
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 کاملStability of nodal quasiparticles in superconductors with coexisting orders.
We establish a condition for the perturbative stability of zero energy nodal points in the quasiparticle spectrum of superconductors in the presence of coexisting commensurate orders. The nodes are found to be stable if the Hamiltonian is invariant under time reversal followed by a lattice translation. The principle is demonstrated with a few examples. Some experimental implications of various ...
متن کاملUltrafast dynamics of nonequilibrium quasiparticles in high-temperature superconductors
The discovery of high-temperature superconductors (HTS) and associated expectations of application of these materials in ultrafast electronics and optoelectronics has created an urgent need for a better understanding of carrier dynamics in HTS, including the HTS electrical and optical properties and their response to pulsed, external electromagnetic perturbations. The above goals were accomplis...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2016
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.117.117002