Zobrazeno 1 - 10
of 373
pro vyhledávání: '"Karki, P. 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.
Publikováno v:
Phys. Rev. B 110, L241406 (2024)
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:
Chapai, Ramakanta, Reddy, P. V. Sreenivasa, Xing, Lingyi, Graf, David E., Karki, Amar B., Chang, Tay-Rong, Jin, Rongying
Publikováno v:
Scientific Reports 13, 6824 (2023)
PdTe is a superconductor with Tc ~4.25 K. Recently, evidence for bulk-nodal and surface-nodeless gap features has been reported in PdTe [Yang et al., Phys. Rev. Lett. 130, 046402 (2023)]. Here, we investigate the physical properties of PdTe in both t
Externí odkaz:
http://arxiv.org/abs/2304.14453
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
Quantum Hall edge channels can be combined with metallic regions to fractionalize electrons and form correlated impurity models. We study a minimal device, that has been experimentally achieved quite recently, with two floating islands connected to t
Externí odkaz:
http://arxiv.org/abs/2204.08549
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