Browsing by Subject "Magnetic field effects"
Now showing items 1-19 of 19
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Article
Anisotropy of the resistivity in the a-b plane of a superconducting YBa2Cu3O7-δ single crystal
(1996)We have measured the in-plane longitudinal resistivities pa and pb as functions of temperature and magnetic field. The measurements were all made on the same detwinned single crystal of YBa2Cu3O7-δ (YBCO). Defining Tc to ...
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Article
Competing broken-symmetry and rotationally symmetric spin-singlet states in a few-electron quantum dot in a magnetic field
(2008)On the basis of developed variational many-body approach, within a second quantized formulation, the nature of the ground state of a few-electron system in a parabolic two-dimensional (2D) quantum dot (QD) is theoretically ...
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Article
Direct conversion of light-polarization information into electric voltage using photoinduced inverse spin-Hall effect in Pt/GaAs hybrid structure: Spin photodetector
(2010)The direct conversion of light-polarization information into electric voltage has been demonstrated using the photoinduced inverse spin-Hall effect in a Pt/GaAs hybrid structure. In the GaAs layer, spin-polarized carriers ...
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Article
Disorder-induced vortex phase transition in untwinned YBa2Cu3O7-δ crystal
(2000)Local magnetic measurements in an untwinned YBa2Cu3O7-δ crystal as a function of temperature, field and time reveal anomalies occurring along the same line BSS(T) in the field-temperature plane. We identify BSS(T) as a ...
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Article
Effects of the consistency of the fringing magnetic field on direct numerical simulations of liquid-metal flow
(2011)We investigate the effects of the consistency of strong fringing decreasing magnetic fields on numerical simulations of classical experimental data. Studies about fringing magnetic fields have attracted the attention of ...
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Article
Exciton-donor complexes in semiconductor quantum dots in a magnetic field: Infinite and finite potential barriers
(2008)The binding energy of the ground state of a charged exciton-donor complex in a spherical semiconductor quantum dot with infinite and finite potential barriers as well as the oscillator strength for the optical transition ...
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Conference Object
Few-electron systems in a quantum dot in a magnetic field: The Wigner molecule and paired electron phases
(2006)We have developed a variational many-body description for few-electron systems in a parabolic quantum dot in an external magnetic field. The ground state energy of the electronic system has been theoretically investigated ...
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Conference Object
Hades experiment: Di-lepton spectroscopy in p + p (2.2 GeV) and C+C (1 and 2 A GeV) collisions
(2006)The HADES (High Acceptance Di-Electron Spectrometer) is a tool designed for lepton pair (e+e-) spectroscopy in pion, proton and heavy ion induced reactions in the 1-2 A GeV energy range. One of the goals of the HADES ...
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Article
Hall effect study of magnetoresistive perovskite LaNi0.5Co 0.5O3 thin films
(2004)We report on the Hall effect of LaNi0.5Co0.5O 3 magnetoresistive thin films grown on Si(100) substrates by pulsed laser deposition. The Hall resistivity exhibits sign reversals both in varying magnetic field and temperature, ...
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Article
Indium oxide as a possible tunnel barrier in spintronic devices
(2005)We report the growth of ultra-thin indium oxide layers using the dc-magnetron sputtering method. We demonstrate that good quality tunnel barriers made of indium oxide can be routinely fabricated and employed in spintronic-related ...
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Article
Laminar free convection in a square enclosure driven by the Lorentz force
(2010)A numerical study is presented of laminar free convection flow driven by magnetic forces. An external magnetic field with one spatially varying component is applied to an electrically conducting fluid in a square enclosure. ...
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Article
Large positive magnetoresistance in nonstoichiometric NiMnSb thin films on silicon
(2004)The transport properties of pulsed-laser-deposited NiMnSb films on silicon as a function of film thickness were discussed. It was found that a low-temperature upturn was observed in the resistivity for film thicknesses of ...
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Article
Magneto-transport properties of NiMnSb thin films on InSb single crystals: Negative giant magnetoresistance
(2007)In this study we investigated the magneto-transport properties of the ohmic contact between polycrystal-line NiMnSb thin films grown by pulsed laser deposition and n-type degenerate InSb (100) substrates. An unusual negative ...
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Article
Magnetoresistance in LaNi1-xCoxO3 (0.3≤x≤0.6)
(2010)We report on a detailed study of the electrical resistivity and the magnetoresistance of the metallic members of the LaNi1-xCoxO3 series with 0.3≤x≤0.6. The low-temperature resistivity of the compounds with 0.3≤x≤0.5 ...
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Conference Object
Model-based broken rotor bar detection on an IFOC driven squirrel cage induction motor
(2004)In this paper, we propose an on-line monitoring scheme to detect broken rotor bars on IFOC driven squirrel cage induction motors. The drive's variable speed nature complicates the use of classical spectrum analysis techniques. ...
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Article
Observation of the narrow state X(3872) → J/ψπ+π- in p̄p collisions at √s = 1.96 TeV
(2004)The observation of a state consistent with X(3872) decaying into J/ψπ+π- was reported. The X(3872) mass was measured to be 3871.3±0.7(stat)±0.4(syst)MeV/c2 from a sample of 730±90 candidates. The observed width was consistent ...
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Article
Photoinduced inverse spin-Hall effect: Conversion of light-polarization information into electric voltage
(2010)The photoinduced inverse spin-Hall effect was observed in a Pt/GaAs hybrid structure. In the GaAs layer, circularly polarized light generates spin-polarized carriers, inducing a pure spin current into the Pt layer through ...
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Article
Recent advances in spintronics. Half-metal ferromagnets: Their role in spintronics
(2004)A review of recent advances in spintronics is presented. We report the structural, magnetic, electrical and thermal properties of the ferromagnetic half-Heusler alloy NiMnSb grown by arcmelting. The bulk material is used ...
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Article
Search for Pair Production of Scalar Top Quarks in R-Parity Violating Decay Modes in pp̄ Collisions at √s = 1.8 TeV
(2004)The search for pair production of scalar top quarks in an R-parity violating supersymmetry scenario in 106 pb-f of pp̄ collisions at √s = 1.8 TeV collected by the Collider Detector at Fermilab was discussed. It was found ...