Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Kikoin, K. A."'
Autor:
Larkin, T. I., Yaresko, A. N., Pröpper, D., Kikoin, K. A., Lu, Y. F., Takayama, T., Mathis, Y. - L., Rost, A. W., Takagi, H., Keimer, B., Boris, A. V.
Publikováno v:
Phys. Rev. B 95, 195144 (2017)
We report the complex dielectric function of the quasi-one-dimensional chalcogenide Ta$_2$NiSe$_5$, which exhibits a structural phase transition that has been attributed to exciton condensation below $T_c = 326$ K, and of the isostructural Ta$_2$NiS$
Externí odkaz:
http://arxiv.org/abs/1702.05953
Publikováno v:
Sci. Rep. 6, 37508 (2016)
We investigate the interplay between the magnetic and the superconducting degrees of freedom in unconventional multi-band superconductors such as iron pnictides. For this purpose a dynamical mode-mode coupling theory is developed based on the coupled
Externí odkaz:
http://arxiv.org/abs/1601.03552
Autor:
Shekhter, R. I., Gorelik, L. Y., Krive, I. V., Kiselev, M. N., Kulinich, S. I., Parafilo, A. V., Kikoin, K., Jonson, M.
A single-electron tunneling (SET) device with a nanoscale central island that can move with respect to the bulk source- and drain electrodes allows for a nanoelectromechanical (NEM) coupling between the electrical current through the device and mecha
Externí odkaz:
http://arxiv.org/abs/1404.5474
Publikováno v:
Phys. Rev. B 91, 165131 (2015)
The feasibility of realizing overscreened Kondo effect in ultra-cold Fermi gas of atoms with spin $s \ge \tfrac{3}{2}$ in the presence of a localized magnetic impurity atom is proved realistic. Specifying to a system of ultra cold $^{22}$Na Fermi gas
Externí odkaz:
http://arxiv.org/abs/1402.0187
Publikováno v:
Europhys. Lett. 104, 57004 (2013)
We consider a general theory of Landau-Zener transitions in a three-level system. Based on a classification of three level crossings we express the Landau - Zener Hamiltonians in terms of two bases: i) spin S=1 SU(2) operators and ii) SU(3) Gell - Ma
Externí odkaz:
http://arxiv.org/abs/1305.4588
A scenario for the formation of symmetry protected non-Fermi-liquid (NFL) Kondo effect (KE) with spin variable enumerating Kondo channels is suggested and worked out. In doubly occupied symmetric triple quantum dot within parallel geometry, the NFL l
Externí odkaz:
http://arxiv.org/abs/1210.4625
Recent experiments [1] suggest that the ferromagnetism (FM) in GaAs: Mn is determined by the impurity band rather than holes in the valence band. We discuss here the physical mechanism of FM mediated by the carriers in impurity band, where the Mn d-l
Externí odkaz:
http://arxiv.org/abs/1208.2811
Publikováno v:
Phys. Rev. Lett. 110, 066804 (2013)
We consider electromechanical properties of a single-electronic device consisting of movable quantum dot attached to a vibrating cantilever, forming a tunnel contact with a non-movable source electrode. We show that the resonance Kondo tunneling of e
Externí odkaz:
http://arxiv.org/abs/1206.4435
Autor:
Kikoin, K.
Publikováno v:
Phys. Rev. B 85, 185132 (2012)
The concept of dynamical symmetries is used for formulation of the renormalization group approach to the Kondo effect in the Anderson model with repulsive and attractive interaction $U$. It is shown that the generic local symmetry of the Anderson Ham
Externí odkaz:
http://arxiv.org/abs/1108.5121
The problem of electron transport by means of a dumbbell shaped shuttle in strong Coulomb blockade regime is solved. The electrons may be shuttled only in the cotunneling regime during the time spans when both shoulders of the shuttle approach the me
Externí odkaz:
http://arxiv.org/abs/1107.2750