Results 31 to 40 of about 15,250 (188)
Kondo effect in a few-electron quantum ring [PDF]
, 2003 A small quantum ring with less than 10 electrons was studied by transport spectroscopy. For strong coupling to the leads a Kondo effect is observed and used to characterize the spin structure of the system in a wide range of magnetic fields.
Abstreiter, G. +6 more
core +3 more sources
Coulomb Blockade with Neutral Modes
Physical Review Letters, 2015 We study transport through a quantum dot in the fractional quantum Hall regime with filling factors =2/3 and =5/2, weakly coupled to the leads. We account for both injection of electrons to/from the leads, and quasiparticle rearrangement processes between the edge and the bulk of the quantum dot. The presence of neutral modes introduces topological
Kamenev, Alex, Gefen, Yuval
openaire +4 more sources
Coherent transport through a Majorana island in an Aharonov–Bohm interferometer
Nature Communications, 2020 Theories predict teleportation of phase-coherent single electrons through a topological superconducting island. Here, the authors report persistent Coulomb blockade conductance peaks due to coherent transport of single electrons through patterned InAs-Al
A. M. Whiticar +11 more
doaj +1 more source
Bolometric detection of Josephson inductance in a highly resistive environment
Nature Communications, 2023 The Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagnetic environment.
Diego Subero +10 more
doaj +1 more source
AIP Advances, 2018 A field-emission-induced electromigration method (activation) is reported for integrating single-electron transistors operating at T = 298 K. The field emission currents between the two opposite electrodes of each series-connected nanogap are tuned to ...
Mitsuki Ito +3 more
doaj +1 more source
Signatures of topological ground state degeneracy in Majorana islands
Physical Review Research, 2020 We consider a mesoscopic superconducting island hosting multiple pairs of Majorana zero-energy modes. The Majorana island consists of multiple p-wave wires connected together by a trivial (s-wave) superconducting backbone and is characterized by an ...
Jukka I. Väyrynen +2 more
doaj +1 more source
Collective Coulomb Blockade in an Array of Quantum Dots: A Mott-Hubbard Approach
, 1993 We investigate the electron addition spectrum in a class of Hubbard-like models which describe arrays of coupled quantum dots. Interdot tunneling leads to a sequence of two phase transitions separating a region of collective Coulomb blockade from a ...
Sarma, S. Das, Stafford, C. A.
core +2 more sources
Effect of elastic disorder on single-electron transport through a buckled nanotube
Physical Review Research, 2022 We study transport properties of a single electron transistor based on elastic nanotube. Assuming that an external compressive force is applied to the nanotube, we focus on the vicinity of the Euler buckling instability.
S. S. Evseev +3 more
doaj +1 more source
Coulomb Blockade in an Open Quantum Dot
, 2010 We report the observation of Coulomb blockade in a quantum dot contacted by two quantum point contacts each with a single fully-transmitting mode, a system previously thought to be well described without invoking Coulomb interactions.
Amasha, S. +5 more
core +1 more source
Universal Behavior of the Coulomb-Coupled Fermionic Thermal Diode
Entropy, 2022 We propose a minimal model of a Coulomb-coupled fermionic quantum dot thermal diode that can act as an efficient thermal switch and exhibit complete rectification behavior, even in the presence of a small temperature gradient.
Shuvadip Ghosh, Nikhil Gupt, Arnab Ghosh
doaj +1 more source