48 citations · 81 across the 4 of their papers we have counts for
6 papers
Two-electron lateral quantum-dot molecules in a magnetic field
M. Helle, A. Harju, R. M. Nieminen
Laterally coupled quantum dot molecules are studied using exact diagonalization techniques. We examine the two-electron singlet-triplet energy difference as a function of magnetic…
Ground-state of two-dimensional finite electron systems in the Quantum Hall regime
Henri Saarikoski, Ari Harju
We study electronic structures of quasi-two-dimensional finite electron systems in high magnetic fields. The solutions in the fractional quantum Hall regime are interpreted as quan…
Singlet-triplet oscillations and far-infrared spectrum of four-minima quantum-dot molecule
M. Marlo-Helle, A. Harju, R. M. Nieminen
We study ground states and far-infrared spectra (FIR) of two electrons in four-minima quantum-dot molecule in magnetic field by exact diagonalization. Ground states consist of alte…
Vortex formation in quantum dots in high magnetic fields
H. Saarikoski, A. Harju, M. J. Puska +1
We study electronic structures of two-dimensional quantum dots in high magnetic fields using the density-functional theory (DFT) and the exact diagonalization (ED). With increasing…
Classical electrons in laterally coupled diatomic 2D artificial molecule
M. Marlo, M. Alatalo, A. Harju +1
Structural properties of a finite number () of point charges (classical electrons) confined laterally in a two-dimensional two-minima potential are calculated as a func…
Stochastic gradient approximation method applied to Hubbard model
A. Harju
The two-dimensional Hubbard model is studied using the variational quantum Monte Carlo technique with Gutzwiller-type variational wave functions. In addition to the simple one-site…