Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 3

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Content available remote

Electronic Structure and X-Ray Magnetic Circular Dichroism in Sm-Doped Bi₂Se₃

100%
Antonov V., Bekenov L., Uba S., Ernst A.
Acta Physica Polonica A
|
2018
|
vol. 133
|
issue 3
453-455
EN
We studied the structural, electronic, and magnetic properties of Sm-doped Bi₂Se₃ using a GGA approximation in a frame of the fully relativistic spin-polarized Dirac linear muffin-tin orbital band-structure method. The X-ray absorption spectra (XAS) and X-ray magnetic circular dichroism at the Sm M_{4,5} edges were investigated theoretically from first principles. The calculated results are in good agreement with experimental data. The complex fine structure of the Sm M_{4,5} XAS in Sm-doped Bi₂Se₃ was found to be not compatible with a pure Sm³⁺ valency state. The interpretation demands mixed valent states.
2
Content available remote

Detection of Single Submillimeter-Wave Photons Using Quantum Dots

100%
Komiyama S., Astafiev O., Antonov V., Kutsuwa T.
Acta Physica Polonica A
|
2000
|
vol. 98
|
issue 3
271-278
EN
Single-photon detection in a range of submillimeter waves (λ = 0.17-0.20 mm) is demonstrated by using lateral semiconductor quantum dots fabricated on a high-mobility GaAs/AlGaAs single heterostructure crystal. When a submillimeter photon is absorbed by the quantum dot while it is operated as a single-electron transistor, it switches on (or off) the conductance through the quantum dot. An incident flux of 0.1 photons/s on an effective detector area, (0.1 mm)^{2}, is detected with a 1 ms time resolution. The effective noise equivalent power is roughly estimated to reach on the order of 10^{-22} W/Hz^{1/2}, a value superior to the ever reported best values of conventional detectors by a factor more than 10^{4}.
3
Content available remote

Electronic Structure, Optical and Magneto-Optical Properties and X-Ray Magnetic Circular Dichroism in Hybrid Heterostructures Sr₂CrReO₆/BaTiO₃

88%
Antonov V., Bekenov L., Uba S., Bonda A., Uba L.
Acta Physica Polonica A
|
2018
|
vol. 133
|
issue 3
456-458
EN
We report on the electronic structure of hybrid heterostructure combined the ferromagnetic double perovskite Sr₂CrReO₆ (SCRO) and ferroelectric BaTiO₃ (BTO) calculated in the GGA approach using the fully relativistic spin-polarized Dirac LMTO method. The optical and MO properties as well as the X-ray absorption spectra and X-ray magnetic circular dichroism at the Ti, Ba, and Re L_{2,3} edges and O K edges of the SCRO/BTO heterostructures were investigated theoretically from the first principles. It was shown that the calculations reproduce well available experimental spectra and allow to explain the microscopic origin of the SCRO/BTO heterostructures optical, MO and XMCD spectra.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.