143 citations · 619 across the 12 of their papers we have counts for
12 papers
Modeling the momentum distributions of annihilating electron-positron pairs in solids
I. Makkonen, M. Hakala, M. J. Puska
Measuring the Doppler broadening of the positron annihilation radiation or the angular correlation between the two annihilation gamma quanta reflects the momentum distribution of e…
Spin dependent electron transport through a magnetic resonant tunneling diode
Paula Havu, Noora Tuomisto, Riikka Vaananen +2
Electron transport properties in nanostructures can be modeled, for example, by using the semiclassical Wigner formalism or the quantum mechanical Green's functions formalism. We c…
Impurity effects in quantum dots: Towards quantitative modeling
E. Rasanen, J. Konemann, R. J. Haug +2
We have studied the single-electron transport spectrum of a quantum dot in GaAs/AlGaAs resonant tunneling device. The measured spectrum has irregularities indicating a broken circu…
Rectangular quantum dots in high magnetic fields
E. Räsänen, A. Harju, M. J. Puska +1
We use density-functional methods to study the effects of an external magnetic field on two-dimensional quantum dots with a rectangular hard-wall confining potential. The increasin…
Broken Symmetry in Density-Functional Theory: Analysis and Cure
A. Harju, E. Rasanen, H. Saarikoski +3
We present a detailed analysis of the broken-symmetry mean-field solutions using a four-electron rectangular quantum dot as a model system. Comparisons of the density-functional th…
Electronic structure of rectangular quantum dots
E. Räsänen, H. Saarikoski, V. N. Stavrou +3
We study the ground state properties of rectangular quantum dots by using the spin-density-functional theory and quantum Monte Carlo methods. The dot geometry is determined by an i…