48 citations · 59 across the 4 of their papers we have counts for
6 papers
First principles electron transport: finite-element implementation for nanostructures
Paula Havu, Ville Havu, Martti J. Puska +3
We have modeled transport properties of nanostructures using the Green's function method within the framework of the density-functional theory. The scheme is computationally demand…
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…
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…
A novel multigrid method for electronic structure calculations
M. Heiskanen, T. Torsti, M. J. Puska +1
A general real-space multigrid algorithm for the self-consistent solution of the Kohn-Sham equations appearing in the state-of-the-art electronic-structure calculations is describe…