Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Zyuzin, Alexander A."'
Recent experiments on Cooper pair splitters using superconductor-quantum dot hybrids have embarked on creating entanglement in the solid-state, by engineering the sub-gap processes in the superconducting region. Using the thermoelectric Cooper pair s
Externí odkaz:
http://arxiv.org/abs/2406.06053
Autor:
Zyuzin, Alexander A.
We report on a study of the interplay between the supercurrent and spin-polarization in a two-dimensional superconducting system in the presence of a d-wave symmetric antiferromagnetic exchange interaction (altermagnetism). It is demonstrated that th
Externí odkaz:
http://arxiv.org/abs/2402.15459
Autor:
Zyuzin, Alexander A., Zyuzin, A. Yu.
We propose a scenario for superconductivity at strong electron-electron attractive interaction, in the situation when the increase of interaction strength promotes the nucleation of the local Cooper pairs and forms a state with a spatially phase inco
Externí odkaz:
http://arxiv.org/abs/2308.04508
Publikováno v:
Phys. Rev. B 107, L060503 (2023)
We present a theory of superconductivity in magic-angle twisted bilayer graphene and analyze the superconducting phase diagram in presence of the magnetic field. Namely, we consider a model of a granular array hosting localized states, which are hybr
Externí odkaz:
http://arxiv.org/abs/2208.12039
Nonlinear phenomena in superconducting resonator circuits are of great significance in the field of quantum technology. We observe thermal self-oscillations in a monolayer graphene flake coupled to Molybdenum-Rhenium superconducting resonator. The gr
Externí odkaz:
http://arxiv.org/abs/2205.14052
Autor:
Wiesner, Maciej, Koski, Kristie, Laitinen, Antti, Manninen, Juuso, Zyuzin, Alexander A., Hakonen, Pertti
We report charge and heat transport studies in copper-intercalated topological insulator Bi$_2$Se$_3$ hybrid devices. Measured conductivity shows impact of quantum corrections, electron-electron and electron-phonon interactions. Our shot noise measur
Externí odkaz:
http://arxiv.org/abs/2202.12320
Publikováno v:
Phys. Rev. B 106, L121114 (2022)
We propose a theoretical model of a ferroelectric metal where spontaneous electric polarization coexists with the conducting electrons. In our model we adopt a scenario when conducting electrons interact with two soft transverse optical phonons, gene
Externí odkaz:
http://arxiv.org/abs/2201.03091
Autor:
Zyuzin, Alexander A., Zyuzin, A. Yu.
Publikováno v:
Phys. Rev. B 106, L020502 (2022)
We study conditions for the emergence of the preformed Cooper pairs in materials hosting flat bands. As a particular example, we consider a semimetal, with a pair of three-band crossing points at which a flat band intersects with a Dirac cone, and fo
Externí odkaz:
http://arxiv.org/abs/2109.07520
Autor:
Islam, SK Firoz, Zyuzin, Alexander A.
Publikováno v:
Physical Review B 104, 245301 (2021)
In this work, we investigate collective modes in a nodal line semimetal with two nodal-lines that have opposite spin polarization in the presence of spin population imbalance. We find the components of polarization operator taking into account the el
Externí odkaz:
http://arxiv.org/abs/2108.13951
Autor:
Zyuzin, Alexander Yu.
We consider the effect of strong electron-electron attraction on superconductivity in the dilute system of the negative U-centers. They couple to the conducting electronic states and mediate attraction between electrons. We predict the formation of t
Externí odkaz:
http://arxiv.org/abs/2012.12597