Zobrazeno 1 - 10
of 1 344
pro vyhledávání: '"Dolgov O"'
Publikováno v:
Supercond. Sci. Technol. 34, 075008 (2021)
One of the features of the unconventional $s_\pm$ state in iron-based superconductors is possibility to transform to the $s_{++}$ state with the increase of the nonmagnetic disorder. Detection of such a transition would prove the existence of the $s_
Externí odkaz:
http://arxiv.org/abs/2103.05404
Publikováno v:
Symmetry 10, 323 (2018)
We study the dependence of the superconducting gaps on both the disorder and the temperature within the two-band model for iron-based materials. In the clean limit, the system is in the $s_\pm$ state with the sign-changing gaps. Scattering by nonmagn
Externí odkaz:
http://arxiv.org/abs/1807.00746
Irradiation of superconductors with different particles is one of many ways to investigate effects of disorder. Here we study the disorder-induced transition between $s_\pm$ and $s_{++}$ states in two-band model for Fe-based superconductors with nonm
Externí odkaz:
http://arxiv.org/abs/1711.02557
We develop a theory of the quasiparticle interference (QPI) in multiband superconductors based on strong-coupling Eliashberg approach within the Born approximation. In the framework of this theory, we study dependencies of the QPI response function i
Externí odkaz:
http://arxiv.org/abs/1707.04547
Publikováno v:
Physics-Uspekhi 59, 1211-1240 (2016)
Disorder - impurities and defects violating an ideal order - is always present in solids. It can result in interesting and sometimes unexpected effects in multiband superconductors. Especially if the superconductivity is unconventional thus having ot
Externí odkaz:
http://arxiv.org/abs/1612.08683
Autor:
Kulic, M. L., Dolgov, O. V.
The theory of EPI with strong forward scattering peak (FSP)[1-3] is recently applied in [4-5] in studying high Tc(~100 K) in a FeSe grown on SrTiO3 [4] and TiO2 [6]. The EPI is due to a long-range dipolar electric field created by the high-energy oxy
Externí odkaz:
http://arxiv.org/abs/1607.00843
Publikováno v:
J. Supercond. Nov. Magn. 29, 1089-1095 (2016)
The $s_\pm$ and $s_{++}$ models for the superconducting state are subject of intense studies regarding Fe-based superconductors. Depending on the parameters, disorder may leave intact or suppress $T_c$ in these models. Here we study the special case
Externí odkaz:
http://arxiv.org/abs/1511.02675
Publikováno v:
Phys. Rev. B 90, 134517 (2014)
We analyze how the magnetic disorder affects the properties of the two-band $s_\pm$ and $s_{++}$ models, which are subject of hot discussions regarding iron-based superconductors and other multiband systems like MgB$_2$. We show that there are severa
Externí odkaz:
http://arxiv.org/abs/1410.0832
Publikováno v:
New J. Phys. 15, 013002 (2013)
We investigate effects of disorder on the density of states, the single particle response function and optical conductivity in multiband superconductors with s_{+-} symmetry of the order parameter, where s_{+-} -> s_{++} transition may take place. In
Externí odkaz:
http://arxiv.org/abs/1209.2256
Y. M. Dai et al. in their recent work arXiv:1106.4430 presented a reflectivity study of the in-plance optical conductivity of a $\textrm{Ba}_{0.6}\textrm{K}_{0.4}\textrm{Fe}_2\textrm{As}_2$ (BKFA) superconductor with $T_{\textrm{c}}\approx39K$. The s
Externí odkaz:
http://arxiv.org/abs/1106.5343