P. Svoboda

Publication List Details

Period

1988 - 2007

Number

54

Co-Authors

The BVRI Light Curves And Period Analysis Of The Beta Lyrae System XX Leonis (2007)

Zasche, P., Wolf, M., Svoboda, P.

The contact eclipsing binary system XX Leonis (P = 0.97 days, sp A8) has been analysed using the PHOEBE programme, based on the Wilson Devinney code. The BVRI light curves were obtained during spring...

Electron magnetotransport in GaAs/AlGaAs superlattices with weak and strong inter-well coupling (2007)

Smrcka, L., Goncharuk, N. A., Svoboda, P., Vasek, P., Krupko, Yu., Wegscheider, W.

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 fields. It has been...

Illumination-induced changes of the Fermi surface topology in three-dimensional superlattices (2007)

Goncharuk, N. A., Smrcka, L., Svoboda, P., Vasek, P., Kucera, J., Krupko, Yu., ...

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 illumination by a red-light...

Magnetoresistance oscillations in GaAs/AlGaAs superlattices subject to in-plane magnetic fields (2006)

Smrčka, L., Vašek, P., Svoboda, P., Goncharuk, N. A., Pacherová, O., Krupko, Y., ...

The MBE-grown GaAs/AlGaAs superlattice with Si-doped barriers has been used to study a 3D -> 2D transition under the influence of the in-plane component of an applied magnetic field. The longitudinal...

Magnetoresistance oscillations in GaAs/AlGaAs superlattices subject to in-plane magnetic fields (2005)

Smrčka, L., Vašek, P., Svoboda, P., Goncharuk, N. A., Pacherová, O., Krupko, Yu., ...

The MBE-grown GaAs/AlGaAs superlattice with Si-doped barriers has been used to study a 3D-2D transition under the influence of the in-plane component of applied magnetic field. The longitudinal...

Interplay between mesoscopic phase separation and bulk magnetism in the layered NaxCoO2 (2005)

Zorkovska, A., Orendac, M., Sebek, J., Santava, E., Svoboda, P., Bradaric, I., ...

Specific heat of the layered NaxCoO2 (x=0.65, 0.70 and 0.75) oxides has been measured in the temperature range of 3-360 K and magnetic field of 0 and 9 T. The analysis of data, assuming the combined...

Sample holder for neutron scattering in high magnetic fields (2005)

Rotter, M., Rotter, P., Dierr, M., Schedler, R., Loewenhaupt, M., Schneidewind, A., ...

This version is available at the following Publisher URL: http://rsi.aip.org

Photoluminescence rings in Corbino disk at quantizing magnetic fields (2004)

Novak, V., Svoboda, P., Cukr, M., Prettl, W.

Spatially resolved photoluminescence of modulation doped AlGaAs/GaAs heterojunction was investigated in a sample of Corbino disk geometry subject to strong perpendicular magnetic fields. Significant...

In-plane magnetic field-dependent magnetoresistance of gated asymmetric double quantum wells (2004)

Krupko, Y., Smrčka, L., Vašek, P., Svoboda, P., Cukr, M., Jansen, L.

We have investigated experimentally the magnetoresistance of strongly asymmetric double wells. The structures were prepared by inserting a thin Al0.3Ga0.7As barrier into the GaAs buffer layer of a...

In-plane Magnetic Field Dependent Magnetoresistance of Gated Asymmetric Double Quantum Wells (2003)

Krupko, Yu., Smrcka, L., Vasek, P., Svoboda, P., Cukr, M., Jansen, L.

We have investigated experimentally the magnetoresistance of strongly asymmetric double-wells. The structures were prepared by inserting a thin Al$_{0.3}$Ga$_{0.7}$As barrier into the GaAs buffer...

Novel critical field in magneto-resistance oscillation of 2DEG in asymmetric GaAs/Al0.3Ga0.7As double wells measured as a function of the in-plane magnetic field (2002)

Svoboda, P., Krupko, Y., Smrčka, L., Cukr, M., Jungwirth, T., Jansen, L.

We have investigated the magnetoresistance of strongly asymmetric double-well structures formed by a thin Al0.3Ga0.7As barrier grown far from the interface in the GaAs buffer of standard...

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 (2001)

Svoboda, P., Krupko, Y., Smrcka, L., Cukr, M., Jungwirth, T., Jansen, L.

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 heterostructures....

Field dependence of the incommensurate magnetic order in UNiGe (2001)

Nakotte, H., Chang, S., Tun, Z., Prokes, K., Svoboda, P., Sechovsky, V., ...

Between 42 and 50 K, UNiGe exhibits an incommensurate phase (IP) with q (=0, , ) with a that is slightly larger than in zero "eld. We have studied the "eld dependence of this magnetic structure by...

Electron conduction within Landau level tails of medium-mobility GaAs / AlGaAs heterostructures (1996)

Svoboda, P., Nachtwei, G., Breitlow, C., Heide, S., Cukr, M.

The temperature dependence of both components of the resistivity tensor $\varrho_{xx}(T)$ and $\varrho_{xy}(T)$ has been studied at T $\geq$ 4.2 K within IQHE plateaux around filling factors \nu=2...

CRYSTAL-FIELD EFFECTS IN REBa2Cu3O7 (1988)

Nekvasil, V., Stehno, J., Ebek, J., Havela, L., Sechovský, V., Svoboda, P.

Superposition model of the crystal field is used to predict splittings of the lowest multiplets and ground-state magnetic properties of rare earth (RE) ions in the high-Tc superconductor REBa2Cu3O7....

MAGNETISM AND CRYSTAL FIELD IN TmCu2 (1988)

Smetana, Z., Svoboda, P., Zajac, Š., Bischof, J., ...

The crystal field energies and Grüneisen parameters of the individual crystal field levels of Tm3+ in TmCu2 were determined from specific heat and thermal expansion data above TN. The magnetic phase...

CRYSTAL-FIELD EFFECTS IN REBa2Cu3O7 (1988)

Nekvasil, V., Stehno, J., Ebek, J., Havela, L., Sechovský, V., Svoboda, P.

Superposition model of the crystal field is used to predict splittings of the lowest multiplets and ground-state magnetic properties of rare earth (RE) ions in the high-Tc superconductor REBa2Cu3O7....

MAGNETISM AND CRYSTAL FIELD IN TmCu2 (1988)

Smetana, Z., Svoboda, P., Zajac, Š., Bischof, J., ...

The crystal field energies and Grüneisen parameters of the individual crystal field levels of Tm3+ in TmCu2 were determined from specific heat and thermal expansion data above TN. The magnetic phase...

CRYSTAL-FIELD EFFECTS IN REBa2Cu3O7 (1988)

Nekvasil, V., Stehno, J., Ebek, J., Havela, L., Sechovský, V., Svoboda, P.

Superposition model of the crystal field is used to predict splittings of the lowest multiplets and ground-state magnetic properties of rare earth (RE) ions in the high-Tc superconductor REBa2Cu3O7....

MAGNETISM AND CRYSTAL FIELD IN TmCu2 (1988)

Smetana, Z., Svoboda, P., Zajac, Š., Bischof, J., ...

The crystal field energies and Grüneisen parameters of the individual crystal field levels of Tm3+ in TmCu2 were determined from specific heat and thermal expansion data above TN. The magnetic phase...

Stimulation of beta-adrenergic receptors of S49 lymphoma cells redistributes the alpha subunit of the stimulatory G protein between cytosol and membranes.

Ransnäs, L A, Svoboda, P, Jasper, J R, Insel, P A

The stimulatory guanine nucleotide-binding protein (Gs), which links cell-surface receptors to second-messenger effector systems, is assumed to be confined to plasma membranes. In the current studies...

Attenuation of Gs alpha coupling efficiency in brown-adipose-tissue plasma membranes from cold-acclimated hamsters.

Svoboda, P, Unelius, L, Cannon, B, Nedergaard, J

In order to localize site(s) of beta-adrenergic desensitization found in brown adipocytes from cold-acclimated animals, total brown-adipose-tissue homogenates (postnuclear supernatant) were obtained...

Cold-induced reduction in Gi alpha proteins in brown adipose tissue. Effects on the cellular hypersensitization to noradrenaline caused by pertussis-toxin treatment.

Svoboda, P, Unelius, L, Dicker, A, Cannon, B, Milligan, G, Nedergaard, J

The significance of Gi proteins for the physiological desensitization phenomena observed in brown-fat cells from cold-acclimated hamsters was investigated. For this purpose, pertussis toxin (the...

Visualization of distinct patterns of subcellular redistribution of the thyrotropin-releasing hormone receptor-1 and gqalpha /G11alpha induced by agonist stimulation.

Drmota, T, Novotny, J, Gould, G W, Svoboda, P, Milligan, G

The rat thyrotropin-releasing hormone receptor-1 (TRHR-1) was modified by the addition of green fluorescent protein (GFP) and expressed stably in HEK293 cells. Extensive overlap of plasma membrane...

Stimulation of beta-adrenergic receptors of S49 lymphoma cells redistributes the alpha subunit of the stimulatory G protein between cytosol and membranes.

Ransnäs, L A, Svoboda, P, Jasper, J R, Insel, P A

The stimulatory guanine nucleotide-binding protein (Gs), which links cell-surface receptors to second-messenger effector systems, is assumed to be confined to plasma membranes. In the current studies...

Attenuation of Gs alpha coupling efficiency in brown-adipose-tissue plasma membranes from cold-acclimated hamsters.

Svoboda, P, Unelius, L, Cannon, B, Nedergaard, J

In order to localize site(s) of beta-adrenergic desensitization found in brown adipocytes from cold-acclimated animals, total brown-adipose-tissue homogenates (postnuclear supernatant) were obtained...

Cold-induced reduction in Gi alpha proteins in brown adipose tissue. Effects on the cellular hypersensitization to noradrenaline caused by pertussis-toxin treatment.

Svoboda, P, Unelius, L, Dicker, A, Cannon, B, Milligan, G, Nedergaard, J

The significance of Gi proteins for the physiological desensitization phenomena observed in brown-fat cells from cold-acclimated hamsters was investigated. For this purpose, pertussis toxin (the...

Visualization of distinct patterns of subcellular redistribution of the thyrotropin-releasing hormone receptor-1 and gqalpha /G11alpha induced by agonist stimulation.

Drmota, T, Novotny, J, Gould, G W, Svoboda, P, Milligan, G

The rat thyrotropin-releasing hormone receptor-1 (TRHR-1) was modified by the addition of green fluorescent protein (GFP) and expressed stably in HEK293 cells. Extensive overlap of plasma membrane...