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Linke H, Omling P, Meyer BK, Petrova-Koch V, Muschik T, Lehmann V. Electron Spin Resonance Investigations of Rapid Thermal Oxidized Porous Silicon. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-283-251] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTWe studied the defect properties present in rapid thermal oxidized porous silicon (RTOPS) by Electron Spin Resonance (ESR). Two different types of defects are distinguished, one similar to the ones observed in damaged c-Si, and in a-Si. The second one is probably related to the Pbo center at the Si/SiO2 interface. The minimum density of 1016 cm-3 is observed for the as etched and for the 900°C oxidized samples, but reaches a maximum of 8×1018 cm-3for the 600°C samples. The PL intensity anticorrelates with the defect densities, which shows that nonradiative recombination via defects is a very powerful channel in quenching the PL efficiency.
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Meyer BK, Hofmann DM, Stadler W, Emanuelsson P, Omling P, Weigel E, MÜller-Vogt G, Wienecke F, Schenk M. Quality of Bulk Cdte Substrates and Its Relation to Intrinsic Defects. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-302-433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTBoth the cadmium vacancy (Vcd) and the tellurium vacancy (VTe) in CdTe are identified by means of electron paramagnetic resonance (EPR). The VCd is a double acceptor and the EPR spectrum is observed in its single negative charge state. The symmetry is found to be trigonal, which can be explained in a model in which the hole occupies a dangling bond t2 orbital and the orbital degeneracy is removed by a static Jahn-Teller distortion. The hyperfine interaction shows that the hole is localised on one of the four Te neighbours. The EPR spectrum of VTe+ reveals cubic (unperturbed) symmetry and the hyperfine structure shows that the unpaired electron is equally spread over the four Cd neighbours.Photo-EPR measurements locate the 0/+ state of VTe at Ev + 0.2 eV and the 2−/− acceptor level of VCd to be situated less than 0.47 eV above the valence band.
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Vikhorev PG, Vikhoreva NN, Sundberg M, Balaz M, Albet-Torres N, Bunk R, Kvennefors A, Liljesson K, Nicholls IA, Nilsson L, Omling P, Tågerud S, Montelius L, Månsson A. Diffusion dynamics of motor-driven transport: gradient production and self-organization of surfaces. Langmuir 2008; 24:13509-17. [PMID: 18989944 DOI: 10.1021/la8016112] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The interaction between cytoskeletal filaments (e.g., actin filaments) and molecular motors (e.g., myosin) is the basis for many aspects of cell motility and organization of the cell interior. In the in vitro motility assay (IVMA), cytoskeletal filaments are observed while being propelled by molecular motors adsorbed to artificial surfaces (e.g., in studies of motor function). Here we integrate ideas that cytoskeletal filaments may be used as nanoscale templates in nanopatterning with a novel approach for the production of surface gradients of biomolecules and nanoscale topographical features. The production of such gradients is challenging but of increasing interest (e.g., in cell biology). First, we show that myosin-induced actin filament sliding in the IVMA can be approximately described as persistent random motion with a diffusion coefficient (D) given by a relationship analogous to the Einstein equation (D = kT/gamma). In this relationship, the thermal energy (kT) and the drag coefficient (gamma) are substituted by a parameter related to the free-energy transduction by actomyosin and the actomyosin dissociation rate constant, respectively. We then demonstrate how the persistent random motion of actin filaments can be exploited in conceptually novel methods for the production of actin filament density gradients of predictable shapes. Because of regularly spaced binding sites (e.g., lysines and cysteines) the actin filaments act as suitable nanoscale scaffolds for other biomolecules (tested for fibronectin) or nanoparticles. This forms the basis for secondary chemical and topographical gradients with implications for cell biological studies and biosensing.
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Affiliation(s)
- Petr G Vikhorev
- School of Pure and Applied Natural Sciences, University of Kalmar, SE-391 82 Kalmar, Sweden
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Sundberg M, Bunk R, Albet-Torres N, Kvennefors A, Persson F, Montelius L, Nicholls IA, Ghatnekar-Nilsson S, Omling P, Tågerud S, Månsson A. Actin filament guidance on a chip: toward high-throughput assays and lab-on-a-chip applications. Langmuir 2006; 22:7286-95. [PMID: 16893228 DOI: 10.1021/la060854i] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Biological molecular motors that are constrained so that function is effectively limited to predefined nanosized tracks may be used as molecular shuttles in nanotechnological applications. For these applications and in high-throughput functional assays (e.g., drug screening), it is important that the motors propel their cytoskeletal filaments unidirectionally along the tracks with a minimal number of escape events. We here analyze the requirements for achieving this for actin filaments that are propelled by myosin II motor fragments (heavy meromyosin; HMM). First, we tested the guidance of HMM-propelled actin filaments along chemically defined borders. Here, trimethylchlorosilane (TMCS)-derivatized areas with high-quality HMM function were surrounded by SiO(2) domains where HMM did not bind actin. Guidance along the TMCS-SiO(2) border was almost 100% for filament approach angles between 0 and 20 degrees but only about 10% at approach angles near 90 degrees . A model (Clemmens, J.; Hess, H.; Lipscomb, R.; Hanein, Y.; Bohringer, K. F.; Matzke, C. M.; Bachand, G. D.; Bunker, B. C.; Vogel, V. Langmuir 2003, 19, 10967-10974) accounted for essential aspects of the data and also correctly predicted a more efficient guidance of actin filaments than previously shown for kinesin-propelled microtubules. Despite the efficient guidance at low approach angles, nanosized (<700 nm wide) TMCS tracks surrounded by SiO(2) were not effective in guiding actin filaments. Neither was there complete guidance along nanosized tracks that were surrounded by topographical barriers (walls and roof partially covering the track) unless there was also chemically based selectivity between the tracks and surroundings. In the latter case, with dually defined tracks, there was close to 100% guidance. A combined experimental and theoretical analysis, using tracks of the latter type, suggested that a track width of less than about 200-300 nm is sufficient at a high HMM surface density to achieve unidirectional sliding of actin filaments. In accord with these results, we demonstrate the long-term trapping of actin filaments on a closed-loop track (width < 250 nm). The results are discussed in relation to lab-on-a-chip applications and nanotechnology-assisted assays of actomyosin function.
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Affiliation(s)
- Mark Sundberg
- Department of Chemistry and Biomedical Sciences, University of Kalmar, SE-39182 Kalmar, Sweden
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Sundberg M, Balaz M, Bunk R, Rosengren-Holmberg JP, Montelius L, Nicholls IA, Omling P, Tågerud S, Månsson A. Selective spatial localization of actomyosin motor function by chemical surface patterning. Langmuir 2006; 22:7302-12. [PMID: 16893230 DOI: 10.1021/la060365i] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We have previously described the efficient guidance and unidirectional sliding of actin filaments along nanosized tracks with adsorbed heavy meromyosin (HMM; myosin II motor fragment). In those experiments, the tracks were functionalized with trimethylchlorosilane (TMCS) by chemical vapor deposition (CVD) and surrounded by hydrophilic areas. Here we first show, using in vitro motility assays on nonpatterned and micropatterned surfaces, that the quality of HMM function on CVD-TMCS is equivalent to that on standard nitrocellulose substrates. We further examine the influences of physical properties of different surfaces (glass, SiO(2), and TMCS) and chemical properties of the buffer solution on motility. With the presence of methylcellulose in the assay solution, there was HMM-induced actin filament sliding on both glass/SiO(2) and on TMCS, but the velocity was higher on TMCS. This difference in velocity increased with decreasing contact angles of the glass and SiO(2) surfaces in the range of 20-67 degrees (advancing contact angles for water droplets). The corresponding contact angle of CVD-TMCS was 81 degrees. In the absence of methylcellulose, there was high-quality motility on TMCS but no motility on glass/SiO(2). This observation was independent of the contact angle of the glass/SiO(2) surfaces and of HMM incubation concentrations (30-150 microg mL(-)(1)) and ionic strengths of the assay solution (20-50 mM). Complete motility selectivity between TMCS and SiO(2) was observed for both nonpatterned and for micro- and nanopatterned surfaces. Spectrophotometric analysis of HMM depletion during incubation, K/EDTA ATPase measurements, and total internal reflection fluorescence spectroscopy of HMM binding showed only minor differences in HMM surface densities between TMCS and SiO(2)/glass. Thus, the motility contrast between the two surface chemistries seems to be attributable to different modes of HMM binding with the hindrance of actin binding on SiO(2)/glass.
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Affiliation(s)
- Mark Sundberg
- Department of Chemistry and Biomedical Sciences, University of Kalmar, SE-39182 Kalmar, Sweden
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Mansson A, Sundberg M, Bunk R, Balaz M, Nicholls I, Omling P, Tegenfeldt J, Tagerud S, Montelius L. Actin-Based Molecular Motors for Cargo Transportation in Nanotechnology— Potentials and Challenges. ACTA ACUST UNITED AC 2005. [DOI: 10.1109/tadvp.2005.858309] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sundberg M, Rosengren JP, Bunk R, Lindahl J, Nicholls IA, Tågerud S, Omling P, Montelius L, Månsson A. Silanized surfaces for in vitro studies of actomyosin function and nanotechnology applications. Anal Biochem 2004; 323:127-38. [PMID: 14622967 DOI: 10.1016/j.ab.2003.07.022] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We have previously shown that selective heavy meromyosin (HMM) adsorption to predefined regions of nanostructured polymer resist surfaces may be used to produce a nanostructured in vitro motility assay. However, actomyosin function was of lower quality than on conventional nitrocellulose films. We have therefore studied actomyosin function on differently derivatized glass surfaces with the aim to find a substitute for the polymer resists. We have found that surfaces derivatized with trimethylchlorosilane (TMCS) were superior to all other surfaces tested, including nitrocellulose. High-quality actin filament motility was observed up to 6 days after incubation with HMM and the fraction of motile actin filaments and the velocity of smooth sliding were generally higher on TMCS than on nitrocellulose. The actomyosin function on TMCS-derivatized glass and nitrocellulose is considered in relation to roughness and hydrophobicity of these surfaces. The results suggest that TMCS is an ideal substitute for polymer resists in the nanostructured in vitro motility assay. Furthermore, TMCS derivatized glass also seems to offer several advantages over nitrocellulose for HMM adsorption in the ordinary in vitro motility assay.
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Affiliation(s)
- Mark Sundberg
- Department of Chemistry and Biomedical Sciences, University of Kalmar, SE-391 82 Kalmar, Sweden
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Månsson A, Sundberg M, Balaz M, Bunk R, Nicholls IA, Omling P, Tågerud S, Montelius L. In vitro sliding of actin filaments labelled with single quantum dots. Biochem Biophys Res Commun 2004; 314:529-34. [PMID: 14733939 DOI: 10.1016/j.bbrc.2003.12.133] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We recently refined the in vitro motility assay for studies of actomyosin function to achieve rectified myosin induced sliding of actin filaments. This paves the way, both for detailed functional studies of actomyosin and for nanotechnological applications. In the latter applications it would be desirable to use actin filaments for transportation of cargoes (e.g., enzymes) between different predetermined locations on a chip. We here describe how single quantum dot labelling of isolated actin filaments simultaneously provides handles for cargo attachment and bright and photostable fluorescence labels facilitating cargo detection and filament tracking. Labelling was achieved with preserved actomyosin function using streptavidin-coated CdSe quantum dots (Qdots). These nanocrystals have several unique physical properties and the present work describes their first use for functional studies of isolated proteins outside the cell. The results, in addition to the nanotechnology developments, open for new types of in vitro assays of isolated biomolecules.
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Affiliation(s)
- Alf Månsson
- Department of Chemistry and Biomedical Sciences, University of Kalmar, SE-39182 Kalmar, Sweden.
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Löfgren A, Marlow CA, Shorubalko I, Taylor RP, Omling P, Samuelson L, Linke H. Symmetry of two-terminal nonlinear electric conduction. Phys Rev Lett 2004; 92:046803. [PMID: 14995393 DOI: 10.1103/physrevlett.92.046803] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2003] [Indexed: 05/24/2023]
Abstract
The well-established symmetry relations for linear transport phenomena cannot, in general, be applied in the nonlinear regime. Here we propose a set of symmetry relations with respect to bias voltage and magnetic field for the nonlinear conductance of two-terminal electric conductors. We experimentally confirm these relations using phase-coherent, semiconductor quantum dots.
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Affiliation(s)
- A Löfgren
- Solid State Physics and The Nanometer Consortium, Lund University, Box 118, S-22100 Lund, Sweden
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Abstract
We have here, for the first time, used nanofabrication techniques to reproduce aspects of the ordered actomyosin arrangement in a muscle cell. The adsorption of functional heavy meromyosin (HMM) to five different resist polymers was first assessed. One group of resists (MRL-6000.1XP and ZEP-520) consistently exhibited high quality motility of actin filaments after incubation with HMM. A second group (PMMA-200, PMMA-950, and MRI-9030) generally gave low quality of motility with only few smoothly moving filaments. Based on these findings electron beam lithography was applied to a bi-layer resist system with PMMA-950 on top of MRL-6000.1XP. Grooves (100-200nm wide) in the PMMA layer were created to expose the MRL-6000.1XP surface for adsorption of HMM and guidance of actin filament motility. This guidance was quite efficient allowing no U-turns of the filaments and approximately 20 times higher density of moving filaments in the grooves than on the surrounding PMMA.
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Affiliation(s)
- Richard Bunk
- Division of Solid State Physics and The Nanometer Consortium, University of Lund, Sweden
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Song AM, Omling P. Strong, ultranarrow peaks of longitudinal and hall resistances in the regime of breakdown of the quantum hall effect. Phys Rev Lett 2000; 84:3145-3148. [PMID: 11019033 DOI: 10.1103/physrevlett.84.3145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/1999] [Indexed: 05/23/2023]
Abstract
With unusually slow and high-resolution sweeps of magnetic field, strong ultranarrow (width down to 100 &mgr;T) resistance peaks are observed when high currents are applied through quantum Hall samples. The peaks are dependent on the directions and even the history of magnetic field sweeps, indicating the involvement of a very slow physical process. Such a process and the sharp peaks are, however, not predicted by existing theories. We also find that the sharp resistance peaks are influenced by the nuclear spin flips.
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Affiliation(s)
- AM Song
- Solid State Physics/Nanometer Structure Consortium, Lund University, Box 118, S-221 00 Lund, Sweden
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Abstract
Adiabatically rocked electron ratchets, defined by quantum confinement in semiconductor heterostructures, were experimentally studied in a regime where tunneling contributed to the particle flow. The rocking-induced electron flow reverses direction as a function of temperature. This result confirms a recent prediction of fundamentally different behavior of classical versus quantum ratchets. A wave-mechanical model reproduced the temperature-induced current reversal and provides an intuitive explanation.
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Affiliation(s)
- H Linke
- School of Physics, University of New South Wales, Sydney 2052, Australia. Division of Solid State Physics, Lund University, Box 118, 221 00 Lund, Sweden
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Kowalski B, Linke H, Omling P. Spin-resonance determination of the electron effective g value of In0.53Ga0.47As. Phys Rev B Condens Matter 1996; 54:8551-8555. [PMID: 9984530 DOI: 10.1103/physrevb.54.8551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Ramvall P, Du Q, Xu H, Samuelson L, Omling P. Effects of interchannel coupling in a two-dimensional electron gas at high magnetic fields. Phys Rev B Condens Matter 1996; 53:1933-1936. [PMID: 9983654 DOI: 10.1103/physrevb.53.1933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kowalski B, Omling P, Meyer BK, Hofmann DM, Wetzel C, Härle V, Scholz F, Sobkowicz P. Conduction-band spin splitting of type-I GaxIn1-xAs/InP quantum wells. Phys Rev B Condens Matter 1994; 49:14786-14789. [PMID: 10010579 DOI: 10.1103/physrevb.49.14786] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Emanuelsson P, Omling P, Meyer BK, Wienecke M, Schenk M. Identification of the cadmium vacancy in CdTe by electron paramagnetic resonance. Phys Rev B Condens Matter 1993; 47:15578-15580. [PMID: 10005948 DOI: 10.1103/physrevb.47.15578] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wetzel C, Meyer BK, Omling P. Electron effective mass in direct-band-gap GaAs1-xPx alloys. Phys Rev B Condens Matter 1993; 47:15588-15592. [PMID: 10005950 DOI: 10.1103/physrevb.47.15588] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Omling P, Kveder V, Meyer BK, Oettinger K, Kaufmann U, Kordina O. Optically detected magnetic-resonance observation of spin-dependent interdefect electron transfer in the GaP:(V,S) system. Phys Rev B Condens Matter 1993; 47:12527-12531. [PMID: 10005444 DOI: 10.1103/physrevb.47.12527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gehlhoff W, Emanuelsson P, Omling P, Grimmeiss HG. Electron-paramagnetic-resonance investigation of the iron-indium pair in silicon. Phys Rev B Condens Matter 1993; 47:7025-7031. [PMID: 10004696 DOI: 10.1103/physrevb.47.7025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wetzel C, Efros AL, Moll A, Meyer BK, Omling P, Sobkowicz P. Dependence on quantum confinement of the in-plane effective mass in Ga0.47In0.53As/InP quantum wells. Phys Rev B Condens Matter 1992; 45:14052-14056. [PMID: 10001523 DOI: 10.1103/physrevb.45.14052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Hofmann DM, Omling P, Grimmeiss HG, Meyer BK, Benz KW, Sinerius D. Identification of the chlorine A center in CdTe. Phys Rev B Condens Matter 1992; 45:6247-6250. [PMID: 10000371 DOI: 10.1103/physrevb.45.6247] [Citation(s) in RCA: 179] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Omling P, Hofmann DM, Kunzer M, Baeumler M, Kaufmann U. Magnetic circular dichroism and optical detection of electron paramagnetic resonance of the SbGa heteroantisite defect in GaAs:Sb. Phys Rev B Condens Matter 1992; 45:3349-3352. [PMID: 10001907 DOI: 10.1103/physrevb.45.3349] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Moll A, Wetzel C, Meyer BK, Omling P, Scholz F. Microwave and far-infrared induced optically detected cyclotron resonance in epitaxial InP and GaAs. Phys Rev B Condens Matter 1992; 45:1504-1506. [PMID: 10001643 DOI: 10.1103/physrevb.45.1504] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Omling P, Yang BH, Samuelson L, Yakimova R, Fornell J, Ledebo L. Electronic properties of the SbGa heteroantisite defect in GaAs:Sb. Phys Rev B Condens Matter 1991; 44:13398-13403. [PMID: 9999542 DOI: 10.1103/physrevb.44.13398] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Omling P, Meyer BK. Spin-dependent interdefect change transfer in the GaP:(Mn,S) system. Phys Rev B Condens Matter 1991; 44:5518-5521. [PMID: 9998387 DOI: 10.1103/physrevb.44.5518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Emanuelsson P, Omling P, Grimmeiss HG, Kreissl J, Gehlhoff W. Electron-paramagnetic-resonance identification of a trigonal chromium-indium pair in silicon. Phys Rev B Condens Matter 1991; 44:6125-6130. [PMID: 9998473 DOI: 10.1103/physrevb.44.6125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kreissl J, Irmscher K, Gehlhoff W, Omling P, Emanuelsson P. Electron-paramagnetic-resonance identification of the manganese-gallium pair in silicon. Phys Rev B Condens Matter 1991; 44:3678-3684. [PMID: 9999996 DOI: 10.1103/physrevb.44.3678] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kveder V, Omling P, Grimmeiss HG, Osipyan YA. Optically detected magnetic resonance of dislocations in silicon. Phys Rev B Condens Matter 1991; 43:6569-6572. [PMID: 9998097 DOI: 10.1103/physrevb.43.6569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kreissl J, Gehlhoff W, Omling P, Emanuelsson P. Electron-paramagnetic-resonance identification of a trigonal manganese-indium pair in silicon. Phys Rev B Condens Matter 1990; 42:1731-1737. [PMID: 9995604 DOI: 10.1103/physrevb.42.1731] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gehlhoff W, Emanuelsson P, Omling P, Grimmeiss HG. Electron paramagnetic resonance identification of the orthorhombic iron-indium pair in silicon. Phys Rev B Condens Matter 1990; 41:8560-8563. [PMID: 9993191 DOI: 10.1103/physrevb.41.8560] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Omling P, Silverberg P, Samuelson L. Identification of a second energy level of EL2 in n-type GaAs. Phys Rev B Condens Matter 1988; 38:3606-3609. [PMID: 9946722 DOI: 10.1103/physrevb.38.3606] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Omling P, Emanuelsson P, Grimmeiss HG. Photoelectron paramagnetic resonance of Pt- in silicon. Phys Rev B Condens Matter 1987; 36:6202-6205. [PMID: 9942318 DOI: 10.1103/physrevb.36.6202] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Omling P, Weber ER, Montelius L, Alexander H, Michel J. Electrical properties of dislocations and point defects in plastically deformed silicon. Phys Rev B Condens Matter 1985; 32:6571-6581. [PMID: 9936762 DOI: 10.1103/physrevb.32.6571] [Citation(s) in RCA: 270] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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