Zobrazeno 1 - 10
of 690
pro vyhledávání: '"Sadovskii, M. A."'
Autor:
Sadovskii, M. V.
Publikováno v:
JETP Letters v. 120, No.3, 205-207 (2024)
We present simple qualitative estimates for the maximal superconducting transition temperature, which may be achieved due to electron - phonon coupling in Eliashberg-McMillan theory. It is shown that in the limit of very strong coupling the upper lim
Externí odkaz:
http://arxiv.org/abs/2407.03602
Autor:
Kuchinskii, E. Z., Sadovskii, M. V.
Publikováno v:
JETP 166, No. 1(7), 45-62 (2024) - Russian Edition
We consider a certain class of exactly solvable models, describing spectral properties an electron moving in random in time external field with different statistical characteristics. This electron can be band - like or belong to a quantum well. The k
Externí odkaz:
http://arxiv.org/abs/2401.08118
Publikováno v:
JETP 137, No. 6, 927-939 (2023)
We present comparative theoretical investigation of thermoelectric power and Hall effect in the Hubbard model for correlated metal and Mott insulator (considered as prototype cuprate superconductor) for different concentrations of current carriers. A
Externí odkaz:
http://arxiv.org/abs/2306.11463
Publikováno v:
JETP 136, No, 3, 368-377 (2023)
We present theoretical analysis of Hall effect in doped Mott-Hubbard insulator, considered as a prototype of cuprate superconductor. We consider the standard Hubbard model within DMFT approximation. As a typical case we consider the partially filled
Externí odkaz:
http://arxiv.org/abs/2211.04102
Publikováno v:
JETP Letters v. 115, 402-405 (2022)
In the framework of dynamical mean field theory (DMFT) we analyze Hall effect in doped Mott insulator as a parent cuprate superconductor. We consider the partial filling (hole doping) of the lower Hubbard band and calculate the dependence of Hall coe
Externí odkaz:
http://arxiv.org/abs/2203.00542
Autor:
Sadovskii, M. V.
Publikováno v:
Physics - Uspekhi, v. 65, No. 7, 724-739 (2022)
The discovery of record - breaking values of superconducting transition temperature $T_c$ in quite a number of hydrides under high pressure was an impressive demonstration of capabilities of electron - phonon mechanism of Cooper pairing. This lead to
Externí odkaz:
http://arxiv.org/abs/2106.09948
Autor:
Sadovskii, M. V.
Publikováno v:
JETP Letters 113, No.9, 581-585 (2021)
It is shown that the famous Allen -- Dynes asymtotic limit for superconducting transition temperature in very strong coupling region $T_{c}>\frac{1}{2\pi}\sqrt{\lambda}\Omega_0$ (where $\lambda\gg 1$ - is Eliashberg - McMillan electron - phonon coupl
Externí odkaz:
http://arxiv.org/abs/2104.00244
Publikováno v:
JETP Letters 112, No.9, 555-567 (2020)
We present a short review of our studies of disorder influence upon Ginzburg - Landau expansion coefficients in Anderson - Hubbard model with attraction in the framework of the generalized DMFT+$\Sigma$ approximation. A wide range of attractive poten
Externí odkaz:
http://arxiv.org/abs/2010.07696
Autor:
Sadovskii, M. V.
Publikováno v:
Physics Uspekhi 64(2), 175-190 (2021)
We present a critical review of recent attempts to introduce the new quantum ("Planckian") limit for the temperature dependence of inelastic scattering rate of electrons in metals. We briefly discuss the main experimental facts and some simple theore
Externí odkaz:
http://arxiv.org/abs/2008.09300
Autor:
Sadovskii, M. V.
Publikováno v:
JETP Letters 111, No. 3, 188-192 (2020)
We consider the simplest model for $T$ - linear growth of resistivity in metals. It is shown that the so called "Planckian" limit for the temperature dependent relaxation rate of electrons follows from a certain procedure for representation of experi
Externí odkaz:
http://arxiv.org/abs/2001.01393