408 citations · 2.9k across the 87 of their papers we have counts for
10 papers · 1 filter
Dissipation engineered directional filter for quantum ratchets
Zlata Fedorova, Christoph Dauer, Anna Sidorenko +3
We demonstrate transport rectification in a hermitian Hamiltonian quantum ratchet by a dissipative, dynamic impurity. While the bulk of the ratchet supports transport in both direc…
Local spin transfer torque and magnetoresistance in domain walls with variable width
Hamidreza Kazemi, Sebastian Eggert, Nicholas Sedlmayr
Use of a spin polarized current for the manipulation of magnetic domain walls in ferromagnetic nanowires has been the subject of intensive research for many years. Recently, due to…
Scaling of intrinsic domain wall magneto-resistance with confinement in electromigrated nanocontacts
Robert M. Reeve, André Loescher, Hamidreza Kazemi +10
In this work we study the evolution of intrinsic domain wall magnetoresistance (DWMR) with domain wall confinement. Clean permalloy notched half-ring nanocontacts are fabricated us…
Perfect spin filter by periodic drive of a ferromagnetic quantum barrier
Daniel Thuberg, Enrique Munoz, Sebastian Eggert +1
We consider the problem of particle tunneling through a periodically driven ferromagnetic quantum barrier connected to two leads. The barrier is modeled by an impurity site represe…
Transport through an AC driven impurity: Fano interference and bound states in the continuum
S. A. Reyes, D. Thuberg, D. Pérez +2
Using the Floquet formalism we study transport through an AC-driven impurity in a tight binding chain. The results obtained are exact and valid for all frequencies and barrier ampl…
Conductance in inhomogeneous quantum wires: Luttinger liquid predictions and quantum Monte Carlo results
Denis Morath, Nicholas Sedlmayr, Jesko Sirker +1
We study electron and spin transport in interacting quantum wires contacted by noninteracting leads. We theoretically model the wire and junctions as an inhomogeneous chain where t…
A quantum resonance catastrophe for transport through an AC driven impurity
Daniel Thuberg, Sebastian A. Reyes, Sebastian Eggert
We consider the quantum transport in a tight-binding chain with a locally applied potential which is oscillating in time. The steady state for such a driven impurity can be calcula…
Lattice defects and boundaries in conducting carbon nanotubes
Sebastian A. Reyes, Alexander Struck, Sebastian Eggert
We consider the effect of various defects and boundary structures on the low energy electronic properties in conducting zigzag and armchair carbon nanotubes. The tight binding mode…
Band gaps of primary metallic carbon nanotubes
Alex Kleiner, Sebastian Eggert
Primary metallic, or small gap semiconducting nanotubes, are tubes with band gaps that arise solely from breaking the bond symmetry due to the curvature. We derive an analytic expr…
Interplay of Coulomb blockade and Aharonov-Bohm resonances in a Luttinger liquid
Jari M. Kinaret, Mats Jonson, Robert I. Shekhter +1
We consider a ring of strongly interacting electrons connected to two external leads by tunnel junctions. By studying the positions of conductance resonances as a function of gate…