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Tytuł:
4f Contribution to Valence Band of Pb$\text{}_{1-x}$RE$\text{}_{x}$S (RE = Eu,Gd) Studied by Resonant Photoemission
Autorzy:
Kowalski, B. J.
Gołacki, Z.
Guziewicz, E.
Orłowski, B. A.
Ghijsen, J.
Johnson, R. L.
Powiązania:
https://bibliotekanauki.pl/articles/1952558.pdf
Data publikacji:
1996-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.25.Tn
79.60.-i
Opis:
Resonant photoemission experiments were carried out in order to reveal the contributions of partly filled Eu 4f$\text{}^{7}$ and Gd 4f$\text{}^{7}$ shells to the valence bands of Pb$\text{}_{0.95}$Eu$\text{}_{0.05}$S and Pb$\text{}_{0.95}$Gd$\text{}_{0.05}$S crystals. The coupling between these orbitals and the host electronic states is discussed.
Źródło:
Acta Physica Polonica A; 1996, 90, 5; 1035-1039
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of 4f Level in Samarium-Rich MBE Grown CdSmTe Sample
Autorzy:
Szamota-Sadowska, K.
Gołacki, Z.
Orłowski, B. A.
Boyn, R.
Johnson, R. J.
Powiązania:
https://bibliotekanauki.pl/articles/1991645.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.20.At
79.60.-i
79.60.Bm
Opis:
Electronic states of 4f samarium ions were investigated by photoemission spectroscopy in samarium-rich CdSmTe sample obtained by MBE. The photon energy of synchrotron radiation allowed to investigate Fano-type resonance and antiresonance. The energy distribution curve spectra were attributed to the Sm 4d-4f transition. The shape of the constant initial states spectra was compared with this one obtained for atomic samarium.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 560-564
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Band Structure of Mn/ZnTe Studied, by Angle-Resolved Photoelectron Spectroscopy
Autorzy:
Kowalski, B. J.
Orlowski, B. A.
Pietrzyk, M.
Kaczor, P.
Kopalko, K.
Mickievicius, S.
Johnson, R. L.
Powiązania:
https://bibliotekanauki.pl/articles/2044491.pdf
Data publikacji:
2005-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.-i
71.23.-k
Opis:
The electronic band structure of Mn/ZnTe(110) (1×1) has been studied by angle-resolved photoelectron spectroscopy. The sets of spectra were acquired for the clean surface and after in situ deposition of 0.4 ML of Mn, in order to compare the band structures and to reveal changes brought about by the presence of Mn. The experimental band structure diagram of Mn/ZnTe along theΓ-K direction in the Brillouin zone has been derived from the experimental data. Indications of interaction between the Mn 3d states and sp$\text{}^{3}$ bands of the semiconductor are discussed.
Źródło:
Acta Physica Polonica A; 2005, 108, 5; 735-740
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bulk Band Structure of CdTe along the Γ-L Direction
Autorzy:
Orłowski, B. A.
Janik, E.
Janowitz, C.
Manzke, R.
Powiązania:
https://bibliotekanauki.pl/articles/1886620.pdf
Data publikacji:
1991-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.Eq
71.20.Fi
Opis:
The valence band structure E(k) for CdTe (111) Cd side surface 2 x 2 reconstructed was investigated along the Γ-L direction of the bulk Brillouin zone by high-resolution angle-resolved photoemission spectroscopy method in the energy range between 9.5 eV and 30.0 eV. The E(k) dependence was determined as well for bulk as for some of the surface states in the whole width of the valence band. Obtained results are compared with available calculated bulk band structure along Γ-L direction.
Źródło:
Acta Physica Polonica A; 1991, 79, 2-3; 303-306
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cd$\text{}_{1-x}$Fe$\text{}_{x}$Se/Fe Interface Formation Observed by Means of Photoemission Spectroscopy
Autorzy:
Guziewicz, E.
Orłowski, B. A.
Kowalski, B. J.
Barrett, N.
Martinotti, D.
Guillot, C.
Lacharme, J.-P.
Sebenne, C. A.
Powiązania:
https://bibliotekanauki.pl/articles/1950803.pdf
Data publikacji:
1996-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.20.-r
79.60.Jv
Opis:
We present a new outlook at the study of metal-semiconductor interface formation. A resonant photoemission spectroscopy tuned to the Fe 3p-3d transition (56 eV) was used to investigate the changes after sequential deposition of Fe atoms on freshly cleaved Cd$\text{}_{0.86}$Fe$\text{}_{0.14}$Se crystal surface. In the first stages (0.6-4 ML) of Fe deposition the contribution of Fe 3d electrons to the valence band grows up markedly indicating the increase in Fe content in the Cd$\text{}_{0.86}$Fe$\text{}_{0.14}$Se crystal surface region. When the amount of Fe exceed 40 ML the resonant photoemission spectra became similar to the Fe metal with some contribution of the ternary crystal substrate.
Źródło:
Acta Physica Polonica A; 1996, 90, 4; 805-808
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cd_{1-x}Fe_{x}Te Ternary Crystal Formation Studied by Resonant Photoemission
Autorzy:
Guziewicz, E.
Kowalski, B. J.
Gołacki, Z.
Orłowski, B. A.
Johnson, R. L.
Masek, J.
Powiązania:
https://bibliotekanauki.pl/articles/1968113.pdf
Data publikacji:
1997-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.35.Fx
79.60.-i
Opis:
A resonant photoemission was used to study the ternary crystal formation, when small amount of Fe atoms was deposited (in one monolayer range of thickness) on the clean CdTe(100) surface. The constant initial state spectra taken near the Fe 3p-3d transition after Fe deposition and then again after heating process show the existence of two Fano-like resonance. The differences of the energy distribution curves taken for both resonance and antiresonance, respectively, allow us to distinguish two kind of Fe 3d contributions to the valence band: one derived from the metallic Fe islands on the surface and the second - derived from the Fe atoms built into the Cd$\text{}_{1-x}$Fe$\text{}_{x}$Te crystal.
Źródło:
Acta Physica Polonica A; 1997, 92, 4; 793-796
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contribution of Mn 3d Electrons To the Valence Band of Sn$\text{}_{0.9}$Mn$\text{}_{0.1}$te
Autorzy:
Nadolny, A. J.
Guziewicz, E.
Kowalski, B. J.
Orłowski, B. A.
Johnson, R.
Powiązania:
https://bibliotekanauki.pl/articles/1992049.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.-i
71.20.Nr
Opis:
The synchrotron radiation in the energy range between 15 and 70 eV was used to investigate the electronic structure of the crystalline Sn$\text{}_{0.9}$Mn$\text{}_{0.1}$Te by means of the resonant photoemission spectroscopy. Fano-type resonance has been observed in the obtained constant initial energy curves with the resonant energy 50.6 eV and antiresonant energy 49.0 eV. The energy distribution curves taken at photon energies close to the Mn 3p-3d transitions allow us to conclude that Mn atoms contribute to the valence band mainly at energies of 4.0 eV and 7.8 eV below the valence band edge.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 454-458
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corporate social responsibility as an instrument of sustainable development of production enterprises
Społeczna odpowiedzialność biznesu jako instrument zrównoważonego rozwoju przedsiębiorstw produkcyjnych
Autorzy:
Gaweł, E.
Jałoszyńska, A.
Orłowski, M.
Ratajczak, E.
Ratajczak, J.
Riera, B.
Powiązania:
https://bibliotekanauki.pl/articles/1206082.pdf
Data publikacji:
2015
Wydawca:
STE GROUP
Tematy:
CSR
sustainable development
production enterprises
rozwój zrównoważony
przedsiębiorstwo produkcyjne
Opis:
The paper deals with the issue of corporate social responsibility as an instrument of operationalising the paradigm of sustainable development on the microeconomic level in the sector of production enterprises. It presents a genesis and importance of CSR and indicates the most relevant essential instruments of CSR implementation on an enterprise level. The paper also analyses endogenous and exogenous benefits from implementing CSR into the business practice.
Artykuł podejmuje problematykę społecznej odpowiedzialności biznesu jako instrumentu opercjonalizacji paradygmatu zrównoważonego rozwoju na poziomie mikroekonomicznym, w sektorze przedsiębiorstw produkcyjnym. Przedstawiono w nim genezę i znaczenie CSR oraz wskazano najważniejsze instrumenty realizacji CSR na poziomie przedsiębiorstwa. Jednocześnie omówiono korzyści o charakterze endo- i egzogenicznym wynikające z wdrożenia CSR do praktyki gospodarczej.
Źródło:
Management Systems in Production Engineering; 2015, 3 (19); 152-155
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cr 3d Surface and Bulk States in Sn$\text{}_{1-x}$Cr$\text{}_{x}$Te/Cr Crystals
Autorzy:
Guziewicz, E.
Szamota-Sadowska, K.
Kowalski, B. J.
Grodzicka, E.
Story, T.
Orłowski, B. A.
Johnson, R. L.
Powiązania:
https://bibliotekanauki.pl/articles/1963380.pdf
Data publikacji:
1997-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.35.Fx
79.60.-i
Opis:
We report a new approach to investigate metal-semiconductor interface formation. Photoemission spectroscopy was applied in order to investigate the clean surface of a Sn$\text{}_{0.97}$Cr$\text{}_{0.03}$ Te crystal and to observe its changes under sequential deposition of small amounts of Cr atoms. In order to analyse the Cr 3d contribution to the valence band, the Fano-type resonance tuned to the Cr 3p-3d transition was used. The experiment was designed to follow the Sn$\text{}_{0.97}$Cr$\text{}_{0.03}$ Te/Cr interface formation process. At the clean Sn$\text{}_{0.97}$Cr$\text{}_{0.03}$Te surface, the Cr 3d states contribution to the valence band was found to be positioned 0.8 eV below the Fermi level. After the Cr deposition processes the contribution shifted to a higher binding energy and another contribution 5.8 eV below the Fermi level was also observed.
Źródło:
Acta Physica Polonica A; 1997, 91, 4; 783-787
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electronic Band Structure of Cubic HgS
Autorzy:
Guziewicz, E.
Kowalski, B.
Orłowski, B. A.
Dybko, K.
Witkowska, B.
Szuszkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/1873013.pdf
Data publikacji:
1995-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Fi
Opis:
Reflectivity spectra of Hg$\text{}_{1-x}$Fe$\text{}_{x}$S (x < 0.04) and HgSe$\text{}_{1-y}$S$\text{}_{y}$ (y < 0.5) mixed crystals were measured in the vacuum ultraviolet energy range from 4 to 12 eV. Information about the electronic band structure of cubic modification of HgS resulting from the above data is analyzed and discussed.
Źródło:
Acta Physica Polonica A; 1995, 87, 2; 395-398
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electronic Structure of Diluted Semimagnetic Semiconductor (Cd,Co)Se
Autorzy:
Cháb, V.
Mašek, J.
Orłowski, B. A.
Kowalski, B. J.
Powiązania:
https://bibliotekanauki.pl/articles/1890829.pdf
Data publikacji:
1991-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.10.Lp
75.50.Pp
79.60.Eq
Opis:
The electronic structure of a new semimagnetic semiconductor (Cd,Co)Se is studied by UPS and calculated by a tight-binding version of the disordered-local-moment theory. The theory accounts for the chemical disorder and for electron interactions within the Co 3d$\text{}^{7}$ shells. Both theory and experiment show Co 3d states deep in the valence band and also at the band edge. The last state seem to be responsible for unique properties of the Co-based semimagnetic semiconductors.
Źródło:
Acta Physica Polonica A; 1991, 80, 3; 333-336
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electronic Structure of the CdTe(100)-(1×1) Surface
Autorzy:
Gawlik, K.-U.
Brugmann, J.
Harm, S.
Janowitz, C.
Manzke, R.
Skibowski, M.
Solterbeck, C.-H.
Schattke, W.
Orłowski, B. A.
Powiązania:
https://bibliotekanauki.pl/articles/1920920.pdf
Data publikacji:
1992-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Et
79.60.Eq
Opis:
Unreconstructed CdTe(100) surface prepared by ion bombardment and annealing is investigated by angle-resolved photoemission. The experimental band structure E(k$\text{}_{∥}$) is determined along high-symmetry lines of the surface Brillouin zone by measuring energy-distribution curves of photoelectrons. Different criteria were applied to separate surface and bulk related spectral features, e.g. calculating the position of bulk-derived emissions in the frame of the free-electron final state approximation assuming k conservation. In this way, most dispersing features could be explained. All remaining features were compared with theoretical surface band structures for different polar surface terminations which were calculated within a layer doubling procedure on the basis of an EHT-fit to the bulk band structure. The investigated CdTe(100)-(1×1) surface could be identified as Cd terminated. Two surface bands were observed, one located above the valence-band edge and the second in the open pocket of the projected bulk band structure along the Γ̅K̅ direction. At 4.6 eV binding energy an additional weakly dispersing band was found, which contains mixed surface and bulk character. The high density of bulk states associated with this edge of the heteropolar gap is also expected to contribute to this feature.
Źródło:
Acta Physica Polonica A; 1992, 82, 2; 355-361
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fano Resonance of Eu$\text{}^{2+}$ and Eu$\text{}^{3+}$ in (Eu,Gd)Te MBE Layers
Autorzy:
Orlowski, B. A.
Kowalski, B. J.
Dziawa, P.
Pietrzyk, M.
Mickievicius, S.
Osinniy, V.
Taliashvili, B.
Kowalik, I. A.
Story, T.
Johnson, R. L.
Powiązania:
https://bibliotekanauki.pl/articles/2044511.pdf
Data publikacji:
2005-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.-i
71.20.Mq
Opis:
Resonant photoemission spectroscopy, with application of synchrotron radiation, was used to study the valence band electronic structure of clean surface of (EuGd)Te layers. Fano-type resonant photoemission spectra corresponding to the Eu 4d-4f transition were measured to determine the contribution of 4f electrons of Eu$\text{}^{2+}$ and Eu$\text{}^{3+}$ ions to the valence band. The resonant and antiresonant photon energies of Eu$\text{}^{2+}$ ions were found as equal to 141 V and 132 eV, respectively and for Eu$\text{}^{3+}$ ions were found as equal to 146 eV and 132 eV, respectively. Contribution of Eu$\text{}^{2+}$4f electrons was found at the valence band edge while for Eu$\text{}^{3+}$ it was located in the region between 3.5 eV and 8.5 eV below the valence band edge.
Źródło:
Acta Physica Polonica A; 2005, 108, 5; 803-807
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fe 3d Contribution to Hg$\text{}_{1-x}$Fe$\text{}_{x}$Se Valence Band by Means of Angle-Resolved Photoemission
Autorzy:
Orłowski, B. A.
Bonnet, J.
Hricovini, C.
Pinchaux, R.
Górecka, J.
Kowalski, B. J.
Mycielski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1890985.pdf
Data publikacji:
1991-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Fi
79.60.Eq
Opis:
The Angle-Resolved Photoemission Electron Spectroscopy (AR PES) was applied to investigate the electronic structure of HgSe and Hg$\text{}_{1-x}$Fe$\text{}_{x}$Se crystals for (110) surface. The measured set of Angle-Resolved Energy Distribution Curves (AR EDCs) permits to determine some of the elements of the electronic band structure E(k) (energy-momentum dependence for ҐKX and ҐX directions in the Brillouin zone) for measured crystals. The Fe 3d contribution gives the states lying over the edge of the valence band of HgSe crystal (0.25 eV), and into the valence band.
Źródło:
Acta Physica Polonica A; 1991, 80, 3; 389-392
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fe 3d Contribution to the Valence Band of Cubic Hg$\text{}_{1-x}$Fe$\text{}_{x}$S - Resonant Photoemission Study
Autorzy:
Kowalski, B. J.
Orłowski, B. A.
Szuszkiewicz, W.
Witkowska, B.
Johnson, R. L.
Powiązania:
https://bibliotekanauki.pl/articles/1933837.pdf
Data publikacji:
1995-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.60.-i
Opis:
Resonant photoemission spectra of cubic Ηg$\text{}_{0.94}$Fe$\text{}_{0.06}$S were measured for photon energies near to the energy of intra atomic Fe 3p$\text{}^{6}$3d$\text{}^{6}$ → 3p$\text{}^{5}$3d$\text{}^{7}$ transition. The difference between the spectra taken at resonance and antiresonance is presented as a measure of the energy distribution of Fe 3d derived states. The results obtained show that Fe 3d states contribute to the whole valence band with a distinct structure appearing at the band edge.
Źródło:
Acta Physica Polonica A; 1995, 88, 4; 791-794
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 42

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