Multiband model for tunneling inMgB2junctions
نویسندگان
چکیده
منابع مشابه
Multiband model for tunneling in MgB2 junctions
A theoretical model for quasiparticle and Josephson tunneling in multiband superconductors is developed and applied to MgB2-based junctions. The gap functions in different bands in MgB2 are obtained from an extended Eliashberg formalism, using the results of band structure calculations. The temperature and angle dependencies of MgB2 tunneling spectra and the Josephson critical current are calcu...
متن کاملMultiband model for penetration depth in MgB2
The results of first-principles calculations of the electronic structure and the electron-phonon interaction in MgB2 are used to study theoretically the temperature dependence and anisotropy of the magnetic-field penetration depth. The effects of impurity scattering are essential for a proper description of the experimental results. We compare our results with experimental data and we argue tha...
متن کاملA phenomenological multiband Eliashberg model for LiFeAs.
The phenomenology of a LiFeAs superconductor can be explained in the framework of four-band s±-wave Eliashberg theory. We have examined the experimental data available in the literature and we have found that it is possible to reproduce the experimental critical temperature, the gap values and the upper critical magnetic field within an effective model in a moderately strong coupling regime tha...
متن کاملVariations on Markovian Quadtree Model for Multiband Astronomical Image Analysis
This paper is concerned with the analysis of multispectral observations, provided by space or ground telescopes. The large amount and the complexity of heterogeneous data to analyse lead us to develop new methods for segmentation tasks, which aim to be robust, fast and efficient. Some prior knowledge on the information to be extracted from the original image is available, and Bayesian statistic...
متن کاملModified multiband excitation model at 2400 bps
This paper presents the Modi ed Multiband Excitation Model used for speech coding. In many MBE model coders, speech quality is degraded when incorrect voicing decisions are made, particularly for high-pitched female speakers. The MMBE addresses this issue with a modi ed voiced/unvoiced decision algorithm and a more robust pitch estimate. The listening quality of speech produced using the MMBE m...
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 B
سال: 2002
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.65.180517