Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Kiselev, Mikhail N."'
Publikováno v:
Phys. Rev. B 105, L041410 (2022)
Quantum systems characterized by an interplay between several resonance scattering channels demonstrate very rich physics. To illustrate it we consider a multistage Kondo effect in nanodevices as a paradigmatic model for a multimode resonance scatter
Externí odkaz:
http://arxiv.org/abs/2110.12671
Autor:
Karki, D. B., Kiselev, Mikhail N.
Publikováno v:
Phys. Rev. B 103, 201402 (2021)
We investigate the quantum transport through Kondo impurity assuming both a large number of orbital channels $\mathcal K$$\gg $$1$ for the itinerant electrons and a semi-classical spin ${\cal S}$ $\gg $ $1$ for the impurity. The non-Fermi liquid regi
Externí odkaz:
http://arxiv.org/abs/2103.12500
Autor:
Pavlov, Andrei I., Kiselev, Mikhail N.
Publikováno v:
Phys. Rev. B 103, 201107 (2021)
We present a microscopic theory for quantum thermoelectric and heat transport in the Schwarzian regime of the Sachdev-Ye-Kitaev (SYK) model. As a charged fermion realization of the SYK model in nanostructures we assume a setup based on a quantum dot
Externí odkaz:
http://arxiv.org/abs/2010.13592
Autor:
Karki, D. B., Kiselev, Mikhail N.
Publikováno v:
Phys. Rev. B 102, 241402(R) (2020)
We develop a conformal-field theory approach for investigation of the quantum charge-, heat- and thermoelectric- transport through a quantum impurity fine tuned to a non-Fermi liquid regime. The non-Fermi-liquid operational mode is associated with th
Externí odkaz:
http://arxiv.org/abs/2008.03223
Autor:
Karki, D. B., Kiselev, Mikhail N.
Publikováno v:
Phys. Rev. B 100, 125426 (2019)
We develop a theoretical framework to study the influences of coupling asymmetry on the thermoelectrics of a strongly coupled SU($N$) Kondo impurity based on a local Fermi liquid theory. Applying non-equilibrium Keldysh formalism, we investigate char
Externí odkaz:
http://arxiv.org/abs/1908.00415
Autor:
Karki, D. B., Kiselev, Mikhail N.
Publikováno v:
Phys. Rev. B 100, 195425 (2019)
We develop a Fermi-liquid based approach to investigate the power output of nano devices in the presence of strong interactions and resonance scattering. The developed scheme is then employed to study the power output of a SU($N$) Kondo impurity at t
Externí odkaz:
http://arxiv.org/abs/1906.00724
Autor:
Karki, D. B., Kiselev, Mikhail N.
Publikováno v:
Phys. Rev. B 98, 165443 (2018)
We developed a theoretical framework which extends the method of \textit{full counting statistics} (FCS) from conventional single channel Kondo screening schemes to multi-channel Kondo paradigm. The developed idea of FCS has been demonstrated conside
Externí odkaz:
http://arxiv.org/abs/1808.07796
Publikováno v:
Phys. Rev. B 97, 195403 (2018)
We consider a quantum dot with ${\cal K}{\geq} 2$ orbital levels occupied by two electrons connected to two electric terminals. The generic model is given by a multi-level Anderson Hamiltonian. The weak-coupling theory at the particle-hole symmetric
Externí odkaz:
http://arxiv.org/abs/1802.00407
Publikováno v:
New J. Phys. 18, 113025 (2016)
Applying Feynman diagrammatics to non-fermionic strongly correlated models with local constraints might seem generically impossible for two separate reasons: (i) the necessity to have a Gaussian (non-interacting) limit on top of which the perturbativ
Externí odkaz:
http://arxiv.org/abs/1605.01953
Autor:
Shnirman, Alexander, Saha, Arijit, Burmistrov, Igor S., Kiselev, Mikhail N., Altland, Alexander, Gefen, Yuval
Publikováno v:
JETP Vol. 149 (3) (2016)
There are two paradigmatic frameworks for treating quantum systems coupled to a dissipative environment: the Caldeira-Leggett and the Ambegaokar-Eckern-Sch\"on approaches. Here we recall the differences between them, and explain the consequences when
Externí odkaz:
http://arxiv.org/abs/1508.00807