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Author Dellavale, D., Kock, M., Blume, H., Alam, M., Schwabe, K., and Kraus J. K.
Title Implementation of Phase-to-Amplitude Coupling Analysis Algorithms in Deep Brain Stimulation Devices Type Journal Article
Year 2014 Publication Biomedical Engineering Abbreviated Journal
Volume 59 Issue Pages S144
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Call Number BT @ pedrazp @ Serial 758
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Author Schmoranzer, D.; Jackson, M.J.; Luzuriaga, J.
Title On the Non-linear Damping of Mechanical Oscillators in Flows of 4He Type Journal Article
Year 2014 Publication Journal of Low Temperature Physics Abbreviated Journal J. Low Temp. Phys.
Volume 175 Issue 1 Pages 97-103
Keywords Resonator; Non-linear dissipation; Turbulence; Liquid helium
Abstract In the studies of both classical and quantum turbulence, significant attention is devoted to the investigation of the behavior of various submerged resonators. Upon entering the turbulent regime, the oscillators start to experience a significant drag force, which varies non-linearly with velocity. We present an empirical way of modeling such systems, and calculate the expected resonant response of such oscillators near the fundamental frequency as a function of the applied driving force. We apply the model to the crossover from linear to non-linear drag forces and compare with previous models as well as selected experimental data on the transition to turbulence in oscillatory flow of 4He.
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Publisher Springer US Place of Publication Editor
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ISSN 0022-2291 ISBN Medium
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Notes Approved no
Call Number BT @ pedrazp @ Serial 663
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Author Romero, M.A.; Aligia, A.A.; Sereni, J.G.; Nieva, G.
Title Interpretation of experimental results on Kondo systems with crystal field Type Journal Article
Year 2014 Publication Journal of Physics: Condensed Matter Abbreviated Journal J. Phys. : Condens. Matter
Volume 26 Issue Pages 025602
Keywords cond-mat.str-el
Abstract We present a simple approach to calculate the thermodynamic properties of single Kondo impurities including orbital degeneracy and crystal field effects (CFE) by extending a previous proposal by K. D. Schotte and U. Schotte [Physics Lett. A 55, 38 (1975)]. Comparison with exact solutions for the specific heat of a quartet ground state split into two doublets shows deviations below $10\%$ in absence of CFE and a quantitative agreement for moderate or large CFE. As an application, we fit the measured specific heat of the compounds CeCu$2$Ge$2$, CePd${3}$Si${0.3}$, CePdAl, CePt, Yb$2$Pd$2$Sn and YbCo$2$Zn${20}$. The agreement between theory and experiment is very good or excellent depending on the compound, except at very low temperatures due to the presence of magnetic correlations (not accounted in the model).
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Notes arXiv:1308.3256v3; Journal Ref: J. Phys.: Condens. Matter 26 (2014) 025602 (9pp) Approved no
Call Number BT @ berisso @ Serial 675
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Author Sereni, J.G.; Gomez Berisso, M.; Betancourth, D.; Correa, V.F.; Canales, N.C.; Geibel, C.
Title Evidence for a dimensionality crossover at the disappearance of magnetism in the Kondo lattice alloy CeCo1-xFexSi Type Journal Article
Year 2014 Publication Physical Review B Abbreviated Journal Phys. Rev. B
Volume 89 Issue 3 Pages 035107
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Publisher American Physical Society Place of Publication Editor
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Call Number BT @ berisso @ 10.1103/PhysRevB.89.035107 Serial 677
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Author Imboden, M.; Han, H.; Stark, T.; Lowell, E.; Chang, J.; Pardo, F.; Bolle, C.; del Corro, P.G.; Bishop, D.J.
Title Building a Fab on a Chip Type Journal Article
Year 2014 Publication Nanoscale Abbreviated Journal
Volume 6 Issue Pages 5049-5062
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Abstract Semiconductor fabs are large, complex industrial sites with costs for a single facility approaching $10B. In this paper we discuss the possibility of putting the entire functionality of such a fab onto a single silicon chip. We demonstrate a path forward where, for certain applications, especially at the nanometer scale, one can consider using a single chip approach for building devices with significant potential cost savings. In our approach, we build micro versions of the macro machines one typically finds in a fab, and integrating all the components together. We argue that the technology now exists to allow one to build a Fab on a Chip.
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Publisher The Royal Society of Chemistry Place of Publication Editor
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ISSN 2040-3364 ISBN Medium
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Call Number BT @ hernan @ Serial 679
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Author Cecilia Blanco, M.; De Paoli, J.M.; Ceppi, S.; Tirao, G.; Nassif, V.M.; Guimpel, J.; Carbonio, R.E.
Title Synthesis, structural characterization and magnetic properties of the monoclinic ordered double perovskites BaLaMSbO6, with M = Mn, Co and Ni Type Journal Article
Year 2014 Publication Journal of Alloys and Compounds Abbreviated Journal
Volume 606 Issue Pages 139-148
Keywords Double perovskites; Magnetic properties; X-ray emission spectroscopy; Neutron powder diffraction
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ISSN 0925-8388 ISBN Medium
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Call Number BT @ jguimpel @ Serial 681
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Author D. Perez-Morelo and H. Pastoriza
Title Torque magnetometry in YBa 2 Cu 3 O 7-δ single crystals using high sensitive micromechanical torsional oscillator Type Journal Article
Year 2014 Publication Journal of Physics: Conference Series Abbreviated Journal
Volume 568 Issue 2 Pages 022038
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Abstract We have developed a high-sensitive micro-torsional oscillators and fabricated with a standard silicon process, as a platform to study the low temperatures magnetic properties of micron sized samples. When the oscillator-sample system interacts with a magnetic field, the displacement of the oscillator from its equilibrium position can be detected as a small change in the capacitance (≈ 0.001 pF). We use this device to study the magnetic response of a thick twinned YBa 2 Cu 3 O 7− δ disk when the magnetic field is tilted away from the c axis in the temperature range 80 K < T < 100 K (T c ≈ 92K).
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ISSN 1742-6596 ISBN Medium
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Call Number BT @ hernan @ Serial 703
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Author M. I. Dolz,Y Fasano, N. R. Cejas Bolecek, H. Pastoriza, M. Konczykowski and C. J. van der Beek
Title Detection of discretized single-shell penetration in mesoscopic vortex matter Type Journal Article
Year 2014 Publication Journal of Physics: Conference Series Abbreviated Journal
Volume 568 Issue 2 Pages 022010
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Abstract We investigated configurational changes in mesoscopic vortex matter with less than thousand vortices during flux penetration in freestanding 50 μm diameter disks of Bi 2 Sr 2 CaCu 2 O 8+δ . High-resolution AC and DC local magnetometry data reveal oscillations in the transmittivity echoed in peaks in the third-harmonics magnetic signal fainting on increasing vortex density. By means of extra experimental evidence and a simple geometrical analysis we show that these features fingerprint the discretized entrance of single-shells of vortices having a shape that mimics the sample edge.
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ISSN 1742-6596 ISBN Medium
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Call Number BT @ hernan @ Serial 704
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Author M. I. Dolz, Y. Fasano, H. Pastoriza, V. Mosser, M. Li, M. Konczykowski
Title Latent-heat and non-linear vortex liquid at the vicinity of the first-order phase transition in layered high-Tc superconductors Type Journal Article
Year 2014 Publication Physical Review B (Condensed Matter and Materials Physics) Abbreviated Journal Phys. Rev. B
Volume 90 Issue 14 Pages 144507
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Abstract In this work we revisit the vortex matter phase diagram in layered superconductors solving still open questions by means of ac and dc local magnetic measurements in the paradigmatic Bi2Sr2CaCu2O8 compound. We show that measuring with ac magnetic techniques is mandatory in order to probe the bulk response of vortex matter, particularly at high temperatures where surface barriers for vortex entrance dominate. From the TFOT evolution of the enthalpy and latent heat at the transition we find that, contrary to previous reports, the nature of the dominant interlayer coupling is electromagnetic in the whole temperature range. By studying the dynamic properties of the phase located at T≳TFOT, we reveal spanning in a considerable fraction of the phase diagram of a nonlinear vortex phase suggesting that bulk pinning might play a role even in the liquid vortex phase.
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Call Number BT @ pedrazp @ Serial 715
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Author Haberkorn, N.; Condó, A.M.; Espinoza, C.; Jaureguizahar, S.; Guimpel, J.; Lovey, F.C.
Title Bulk-like behavior in the temperature driven martensitic transformation of Cu-Zn-Al thin films with 2H structure Type Journal Article
Year 2014 Publication Materials Letters Abbreviated Journal Journal of Alloys and Compounds
Volume 591 Issue Pages 263-267
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Notes Cited By :3; Export Date: 14 March 2018 Approved no
Call Number BT @ jguimpel @ Serial 789
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