48 citations · 120 across the 6 of their papers we have counts for
16 papers · 1 filter
Gate-controlled current switch in graphene
Kimmo Sääskilahti, Ari Harju, Pirjo Pasanen
We study numerically cross conductances in a four-terminal all-graphene setup. We show that far away from the Dirac point current flows along zigzag directions, giving the possibil…
Quantum Hall droplet laterally coupled to a quantum ring
E. Tölö, A. Harju
We study a two-dimensional cylindrically-symmetric electron droplet separated from a surrounding electron ring by a tunable barrier using the exact diagonalization method. The magn…
Coreless Vortices in Rotating Two-Component Quantum Droplets
H. Saarikoski, A. Harju, J. Christensson +3
The rotation of a quantum liquid induces vortices to carry angular momentum. When the system is composed of multiple components that are distinguishable from each other, vortex cor…
Pfaffian and fragmented states at nu=5/2 in quantum Hall droplets
H. Saarikoski, E. Tolo, A. Harju +1
When a gas of electrons is confined to two dimensions, application of a strong magnetic field may lead to startling phenomena such as emergence of electron pairing. According to a…
Effects of thickness in quantum dots at strong magnetic fields
E. Tölö, A. Harju
We study the effects of thickness on the ground states of two-dimensional quantum dots in high magnetic fields. To be specific, we assume the thickness to be small so that only the…
Half-Integer Filling Factor States in Quantum Dots
A. Harju, H. Saarikoski, E. Rasanen
Emergence of half-integer filling factor states, such as nu=5/2 and 7/2, is found in quantum dots by using numerical many-electron methods. These states have interesting similariti…