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1 találatból megjelenítve: 1-13
Cím: Oscillating chiral currents in nanotubes: A route to nanoscale magnetic test tubes
Szerző: ; ;
Dátum: 2008
Feltöltve: 2020-08-11
(2008)
With a view to optimizing the design of carbon-nanotube (CNT) windmills
and to maximizing the internal magnetic field generated by chiral
currents, we present analytical results for the group-velocity
components of an ...
Cím: Chiral currents in gold nanotubes
Szerző: ; ;
Dátum: 2010
Feltöltve: 2020-08-11
(2010)
Results are presented for the electron current in gold chiral nanotubes (AuNTs). Starting from the band structure of (4,3) and (5,3) AuNTs, we find that the magnitude of the chiral currents are greater than those found in ...
Cím: Nonthermal broadening in the conductance of double quantum dot structures
Szerző: ; ; ; ;
Dátum: 2007
Feltöltve: 2020-08-08
(2007)
We study the transport properties of a double quantum dot (DQD)
molecule at zero and at finite temperature. The properties of
the
zero-temperature conductance depend on whether the level
attraction
between the symmetric ...
Cím: Intraband electron focusing in bilayer graphene
Szerző: ; ; ;
Dátum: 2012
Feltöltve: 2020-08-11
(2012)
We propose an implementation of a valley selective electronic Veselago lens in bilayer graphene. We demonstrate that in the presence of an appropriately oriented potential step, low-energy electrons radiating from a point ...
Cím: Proximity-induced subgaps in Andreev billiards
Szerző: ; ; ; ;
Dátum: 2002
Feltöltve: 2020-08-08
(2002)
We examine the density of states of an Andreev billiard and show that any billiard with a finite upper cutoff in the path length distribution P(s) will possess an energy gap on the scale of the Thouless energy. An exact ...
Cím: Logarithmic contribution to the density of states of rectangular Andreev billiards
Szerző: ; ; ;
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
We demonstrate that the exact quantum mechanical calculations are in good agreement with the semiclassical predictions for rectangular Andreev billiards, and therefore for a large number of open channels it is sufficient ...
Cím: Ring-shaped Andreev billiards in quantizing magnetic fields
Szerző: ; ; ; ;
Dátum: 2004
Feltöltve: 2020-08-08
(2004)
We present a detailed semiclassical study of a clean disk-shaped
insulator-normal-metal-superconductor hybrid system in a magnetic
field. It is based on an exact secular equation that we derived within
the microscopic ...
Cím: Andreev bound states for a superconducting-ferromagnetic box
Szerző: ; ;
Dátum: 2004
Feltöltve: 2020-08-08
(2004)
Within the microscopic Bogoliubov-de Gennes formalism an exact quantization condition for Andreev bound states of the ferromagnetic-superconducting hybrid systems of box geometry is derived and a semiclassical formula for ...
Cím: Quantum-classical correspondence in the wave functions of Andreev billiards
Szerző: ; ; ;
Dátum: 2006
Feltöltve: 2020-08-08
(2006)
We present a classical and quantum mechanical study of an Andreev
billiard with a chaotic normal dot. We demonstrate that the nonexact
velocity reversal and the diffraction at the edges of the
normal-superconductor contact ...
Cím: Nonuniversal behavior of the parity effect in monovalent atomic wires
Szerző: ; ; ; ; ; ;
Dátum: 2006
Feltöltve: 2020-08-08
(2006)
We propose a mixed analytical-ab initio method for the accurate
calculation of the conductance in monovalent atomic wires. The method
relies on the most general formula for ballistic transport through a
monovalent wire, ...
Cím: Negative length orbits in normal-superconductor billiard systems
Szerző: ; ; ; ;
Dátum: 2000
Feltöltve: 2020-08-08
(2000)
The path-length spectra of mesoscopic systems including diffractive
scatterers and connected to a superconductor are studied theoretically.
We show that the spectra differ fundamentally from that of normal
systems due to ...
Cím: Quantized invariant tori in Andreev billiards of mixed phase space
Szerző: ; ; ;
Dátum: 2006
Feltöltve: 2020-08-08
(2006)
Comparing the results of exact quantum calculations and those obtained
from the Einstein-Brillouin-Keller-like quantization scheme of
Silvestrov [Phys. Rev. Lett. 90, 116801 (2003)] we show that the
spectrum of Andreev ...
Cím: Andreev drag effect via magnetic quasiparticle focusing in normal-superconductor nanojunctions
Szerző: ; ; ;
Dátum: 2006
Feltöltve: 2020-08-08
(2006)
We study a hybrid normal-superconductor (NS) pi junction in which the
nonlocal current can be orders of magnitude larger than that in earlier
proposed systems. We calculate the electronic transport of this NS
hybrid system ...