95 citations · 467 across the 35 of their papers we have counts for
25 papers · 1 filter
Commensurability oscillations in a quasi-two-dimensional electron gas subjected to strong in-plane magnetic field
Ludvik Smrcka
We report on a theoretical study of the commensurability oscillations in a quasi-two-dimensional electron gas modulated by a unidirectional periodic potential and subjected to tilt…
Magnetotransport in graphene on silicon side of SiC
P. Vasek, L. Smrcka, P. Svoboda +6
We have studied the transport properties of graphene grown on silicon side of SiC. Samples under study have been prepared by two different growth methods in two different laborator…
Infrared magneto-spectroscopy of graphite in tilted fields
N. A. Goncharuk, L. Nadvornik, C. Faugeras +2
The electronic structure of Bernal-stacked graphite subject to tilted magnetic fields has been investigated using infrared magneto-transmission experiments. With the increasing in-…
Tight-binding description of Landau levels of graphite in tilted magnetic fields
Nataliya A. Goncharuk, Ludvik Smrcka
The electronic structure of Bernal-stacked graphite subject to tilted magnetic fields is studied theoretically. The minimal nearest-neighbor tight-binding model with the Peierls su…
Electronic properties of graphite in tilted magnetic fields
Nataliya A. Goncharuk, Ludvik Smrcka
The minimal nearest-neighbor tight-binding model with the Peierls substitution is employed to describe the electronic structure of Bernal-stacked graphite subject to tilted magneti…
From laterally modulated two-dimensional electron gas towards artificial graphene
L. Nadvornik, M. Orlita, N. A. Goncharuk +8
Cyclotron resonance has been measured in far-infrared transmission of GaAs/AlGaAs heterostructures with an etched hexagonal lateral superlattice. Non-linear dependence…
Pre-edge XANES structure of Mn in (Ga,Mn)As
N. A. Goncharuk, J. Kucera, L. Smrcka
The X-ray absorption near-edge structure (XANES) at the Mn K-edge in the (Ga,Mn)As magnetic semiconductor was simulated using the full potential linearized augmented plane wave (FL…
Gate-induced magneto-oscillation phase anomalies in graphene bilayers
N. A. Goncharuk, L. Smrcka
The magneto-oscillations in graphene bilayers are studied in the vicinity of the K and K' points of the Brillouin zone within the four-band continuum model ased on the simplest tig…
Electron magnetotransport in GaAs/AlGaAs superlattices with weak and strong inter-well coupling
L. Smrcka, N. A. Goncharuk, P. Svoboda +3
We report on magnetotransport measurements in two MBE-grown GaAs/AlGaAs superlattices formed by wide and narrow quantum wells and thin Si-doped barriers subject to tilted magnetic…
Illumination-induced changes of the Fermi surface topology in three-dimensional superlattices
N. A. Goncharuk, L. Smrcka, P. Svoboda +4
The magnetoresistance of the MBE-grown GaAs/AlGaAs superlattice with Si-doped barriers has been measured in tilted magnetic fields in the as-grown state, and after brief illuminati…
Electronic Structure of Three-Dimensional Superlattices Subject to Tilted Magnetic Fields
N. A. Goncharuk, L. Smrcka, J. Kucera +1
Full quantum-mechanical description of electrons moving in 3D structures with unidirectional periodic modulation subject to tilted magnetic fields requires an extensive numerical c…
Magnetoresistance of Si(001) MOSFETs with high concentration of electrons
L. Smrcka, O. N. Makarovsky, S. G. Schemenchinskii +2
We present an experimental study of electron transport in inversion layers of high-mobility Si(001) samples with occupied excited subbands. The second series of oscillations, obser…
In-plane Magnetic Field Dependent Magnetoresistance of Gated Asymmetric Double Quantum Wells
Yu. Krupko, L. Smrcka, P. Vasek +3
We have investigated experimentally the magnetoresistance of strongly asymmetric double-wells. The structures were prepared by inserting a thin AlGaAs barrier into…
Cyclotron Resonance Study of the Two-Dimensional Electron Layers and Double-Layers in Tilted Magnetic Fields
Nataliya A. Goncharuk, Ludvik Smrcka, Jan Kucera
The far-infrared absorption in two-dimensional electron layers subject to magnetic field of general orientation was studied theoretically. The Kubo formula is employed to derive di…
Tight-binding model for strongly modulated two-dimensional superlattices
Karel Vyborny, Ludvik Smrcka
Common models describing magnetotransport properties of periodically modulated two--dimensional systems often either directly start from a semiclassical approach or give results we…
Cyclotron Resonance in Two-Dimensional Electron Single-Layers and Double-Layers in Tilted Magnetic Fields
N. Goncharuk, L. Smrcka, J. Kucera
The far-infrared absorption in two-dimensional electron layers subject to magnetic field of general orientation was studied theoretically. The Kubo formula was employed to derive d…
Magnetoresistance calculations for a two-dimensional electron gas with unilateral short-period strong modulation
Karel Vyborny, Ludvik Smrcka, Rainer A. Deutschmann
The linear response theory is used to describe magnetoresistance oscillations of short-period unilateral superlattices with strong modulation (or alternatively arrays of coupled qu…
Novel critical field in magneto-resistance oscillation of 2DEG in asymmetric GaAs/AlGaAs double wells measured as a function of the in-plane magnetic field
P. Svoboda, Y. Krupko, L. Smrcka +3
We have investigated the magnetoresistance of strongly asymmetric double-well structures formed by a thin AlGaAs barrier grown far from the interface in the GaAs buffer of standard…
Longitudinal conductivity and transverse charge redistribution in coupled quantum wells subject to in-plane magnetic fields
J. Kolorenc, L. Smrcka, P. Streda
In double quantum wells electrons experience a Lorentz force oriented perpendicular to the structure plane when an electric current is driven perpendicular to the direction of an i…
Inter-layer Hall effect in double quantum wells subject to in-plane magnetic fields
J. Kolorenc, L. Smrcka, P. Streda
We report on a theoretical study of the transport properties of two coupled two-dimensional electron systems subject to in-plane magnetic fields. The charge redistribution in doubl…
Magnetoresistance and electronic structure of asymmetric GaAs/AlGaAs double quantum wells in the in-plane/tilted magnetic field
O. N. Makarovskii, L. Smrcka, P. Vasek +3
Bilayer two-dimensional electron systems formed by a thin barrier in the GaAs buffer of a standard heterostructure were investigated by magnetotransport measurements. In magnetic f…
Reorientation of Anisotropy in a Square Well Quantum Hall Sample
W. Pan, T. Jungwirth, H. L. Stormer +7
We have measured magnetotransport at half-filled high Landau levels in a quantum well with two occupied electric subbands. We find resistivities that are {\em isotropic} in perpend…
Excitonic photoluminescence in symmetric coupled double quantum wells subject to an external electric field
J. Soubusta, R. Grill, P. Hlidek +5
The effect of an external electric field F on the excitonic photoluminescence (PL) spectra of a symmetric coupled double quantum well (DQW) is investigated both theoretically and e…
Field-tilt Anisotropy Energy in Quantum Hall Stripe States
T. Jungwirth, A. H. MacDonald, L. Smrcka +1
Recently reported giant anisotropy in the longitudinal resistivity of a 2D electron system with valence Landau level index has been interpreted as a signal of unidirectio…