Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Karki, D. B."'
Autor:
Karki, D. B.
We develop a theory of Coulomb blockade oscillations in transport and thermodynamic properties of a mesoscopic device having multiple charging energy modes. This setup can be realized using a nanoelectronic circuit comprising coupled hybrid metal-sem
Externí odkaz:
http://arxiv.org/abs/2409.05218
Autor:
Karki, D. B.
We show that the combined effects of dynamical Coulomb blockade and integer quantum Hall effect in a coupled hybrid metal-semiconductor setup provide a pathway for realizing resonant tunneling in Luttinger liquids. This hybrid setup can be brought to
Externí odkaz:
http://arxiv.org/abs/2407.05481
Autor:
Karki, D. B., Matveev, K. A.
Publikováno v:
Phys. Rev. B 109,155415 (2024)
We develop a theory of tunneling between two systems of spinless chiral fermions. This setup can be realized at the edge of a quantum Hall bilayer structure. We find that the differential conductance of such a device in the absence of interactions ha
Externí odkaz:
http://arxiv.org/abs/2310.14454
Publikováno v:
Phys. Rev. B 109, 085410 (2024)
Manipulation of decoupled Majorana zero modes (MZMs) could enable topologically-protected quantum computing. However, the practical realization of a large number of perfectly decoupled MZMs needed to perform nontrivial quantum computation has proven
Externí odkaz:
http://arxiv.org/abs/2309.08758
Autor:
Karki, D. B., Boulat, Edouard, Pouse, Winston, Goldhaber-Gordon, David, Mitchell, Andrew K., Mora, Christophe
Publikováno v:
Phys. Rev. Lett. 130, 146201 (2023)
Quantum impurity models with frustrated Kondo interactions can support quantum critical points with fractionalized excitations. Recent experiments [arXiv:2108.12691] on a circuit containing two coupled metal-semiconductor islands exhibit transport si
Externí odkaz:
http://arxiv.org/abs/2210.04937
Publikováno v:
Phys. Rev. B 106, 155419 (2022)
We theoretically study a strongly disordered superconducting layer heated by near-field microwave radiation from a nanometric metallic tip. The microwaves heat up the quasiparticles, which cool by phonon emission and conduction away from the heated a
Externí odkaz:
http://arxiv.org/abs/2205.07934
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.
Publikováno v:
Phys. Rev. B 103, 235403 (2021)
We study the coherent properties of fully screened and overscreened Kondo effects based on the Nozieres local Fermi-liquid theory and Affleck-Ludwig boundary conformal-field-theory approach, respectively. Coherent transports through an SU($N)$ genera
Externí odkaz:
http://arxiv.org/abs/2106.01620
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:
Karki, D. B.
Publikováno v:
Phys. Rev. B 102, 245430 (2020)
We develop a method of theoretically investigating the charge, energy and heat transport in the presence of the charge Kondo correlations. The Coulomb blockade oscillations of heat conductance in the single electron transistor exhibiting the charge K
Externí odkaz:
http://arxiv.org/abs/2012.14809