Valence Band Structures of Heavily Doped Strained GexSi1-x Layers. (9999)
Fu, Y., Jain, S. C., Willander, M., Loferski, J. J.
Valence-band structure and density-of-state (DOS) effective mass are calculated for heavily p-type-doped Si and strained Gex Si sub (1-x) layers grown on (100) S1. At low doping values calculations...
Effects of strong correlations for 2D Bose-Einstein condensed dipolar excitons (2007)
Lozovik, Yu. E., Kurbakov, I. L., Astrakharchik, G. E., Boronat, J., Willander, M.
By doing quantum Monte Carlo ab initio simulations we show that dipolar excitons, which are now under experimental study, actually are strongly correlated systems. Strong correlations manifest in...
Superfluidity of two- dimensional excitons in flat and harmonic traps (2007)
Lozovik, Yu. E., Kurbakov, I. L., Willander, M.
Superfluid exciton density and superfluid transition (crossover) temperature are calculated for 2D excitons in large-size flat and harmonic traps. A generalized local density approximation for the...
Galeckas, A., Juodkazis, S., Vanagas, E., Netiksis, V., Petrauskas, M., Bitz, A., ...
Picosecond transient reflectometry and dynamic grating techniques have been applied to investigate the perpendicular and parallel transport of optically excited carriers in strained-layer...
Many-body effects in transport through open systems: pinning of resonant levels (2007)
Ihnatsenka, S., Zozoulenko, I. V., Willander, M.
The role of electron-electron interaction in transport properties of open quantum dots is studied. The self-consistent full quantum mechanical magnetotransport calculations within the Hartree,...
New materials for micro-scale sensors and actuators an engineering review (2007)
Wilson, S.A., Jourdain, R.P.J., Zhang, Q., Dorey, R.A., Bowen, C.R., Willander, M., ...
This paper provides a detailed overview of developments in transducer materials technology relating to their current and future applications in micro-scale devices. Recent advances in piezoelectric,...
Reply: Comment on "Trapping single molecules by dielectrophoresis" (2006)
Hölzel, R., Calander, N., Chiragwandi, Z., Willander, M., Bier, F.F.
Trapping single molecules by dielectrophoresis (2005)
Hölzel, R., Calander, N., Chiragwandi, Z., Willander, M., Bier, F.F.
We have trapped single protein molecules of R-phycoerythrin in an aqueous solution by an alternating electric field. A radio frequency voltage is applied to sharp nanoelectrodes and hence produces a...
AFM current imaging for surface oxidized nanocrystalline silicon dots (2004)
Salem, M. A., Mizuta, Hiroshi, Oda, S., Fu, Y., Willander, M.
Weak antilocalization in quantum wells in tilted magnetic fields (2003)
Minkov, G. M., Germanenko, A. V., Rut, O. E., Sherstobitov, A. A., Golub, L. E., Zvonkov, B. N., ...
Weak antilocalization is studied in an InGaAs quantum well. Anomalous magnetoresistance is measured and described theoretically in fields perpendicular, tilted and parallel to the quantum well plane....
Spin Relaxation Anisotropy in Two-Dimensional Semiconductor Systems (2002)
Averkiev, N. S., Golub, L. E., Willander, M.
Spin relaxation is investigated theoretically in two-dimensional systems. Various semiconductor structures of both n- and p-types are studied in detail. The most important spin relaxation mechanisms...
Exciton-Polariton Band Structure in Quantum-Dot Lattices (2002)
Ivchenko, E. L., Fu, Y., Willander, M.
We develop a theory of exciton polaritons in three-dimensional quantum dot lattices with the period comparable to the light wavelength. A system of the Maxwell equations and nonlocal material...
Electron Spin Relaxation in Zinc-Blende Heterostructures (2002)
Averkiev, N. S., Golub, L. E., Willander, M.
Spin relaxation in-plane anisotropy is predicted for heterostructures based on zinc-blende semiconductors. It is shown that it manifests itself especially brightly if the two spin relaxation...
Nanostructure Effect in Si-MOSFETs (2002)
Willander, M., Yousif, M. Y., Nur, O.
In this article we present a summary of the most important critical issues in nano-scaled field-effect transistors. The controversial issue of alloy scattering and the phenomenon of velocity...
Averkiev, N. S., Golub, L. E., Tarasenko, S. A., Willander, M.
The theory of weak localization is presented for quasi-2D systems where several sub- bands of size quantization are occupied. The weak-localization correction to conductivity is shown to depend...
Effect of intersubband scattering on weak localization in 2D systems (2001)
Averkiev, N. S., Golub, L. E., Tarasenko, S. A., Willander, M.
The theory of weak localization is generalized for multilevel 2D systems taking into account intersubband scattering. It is shown that weak intersubband scattering which is negligible in a classical...
Fu, Y, Willander, M, Liu, XQ, Lu, W, Shen, SC, Tan, HH, ...
Photoconductors based on V-grooved Al0.5Ga0.5As/GaAs multiple quantum wires (QWR) were fabricated. The geometric structure of the QWR was carefully characterized by transmission electron microscopy...
Carrier transfer between V-grooved quantum wire and vertical quantum well (2001)
Lu, W, Liu, XQ, Li, ZF, Shen, SC, Zhao, QX, Fu, Y, ...
We report the temperature dependence of the photoluminescence from our V-grooved GaAs/AlGaAs quantum wires. Based on the specially resolved luminescence results, our results show that in the...
Spin relaxation in asymmetrical heterostructures (2000)
Averkiev, N. S., Golub, L. E., Willander, M.
Electron spin relaxation caused by the D'yakonov-Perel' mechanism is investigated theoretically in asymmetrical A$_3$B$_5$ heterostructures. The total spin relaxation anisotropy is demonstrated for a...
Pinardi, K., Lai, Z., Vogel, D., Kang, Y.L., Liu, J., Liu, S., ...
Flip chip joining using anisotropically conductive adhesive (ACA) has become a very attractive technique for electronics packaging. Many factors can influence the reliability of the ACA flip-chip...
Heat transport across the interface between normal metal and d-wave superconductor (1999)
Devyatov, I.A., Kupriyanov, M..Y., Golubov, A., Kuzmin, L., Willander, M.
Superfluidity of indirect excitons in a quantum dot (1998)
Lozovik, Yu. E., Verzakov, S. A., Willander, M.
The superfluidity and Bose-Einstein condensation of indirect excitons in two-dimensional quantum dot are studied by path-integral Monte Carlo simulations. The temperature dependence of superfluid and...
Beibwanger On the design of a 55 GHz Si/SiGe HBT frequency doubler operating close to f (1998)
A. Rydberg, H. Schumacher, J-f. Luy, M. Willander, U. Erben, M. Karlsteen, ...
r his supervision. I would also like to thank Prof. Sören Berg for accepting me as Ph. D. student. A list of all my colleagues at Signals and Systems would unfortunately be too long to fit the space...