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Regensburg 2007 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 20: Correlated Electrons - Poster Session

Wednesday, March 28, 2007, 14:00–17:45, Poster A

14:00 TT 20.1 Neutron Scattering and X-ray Diffraction on HoInCu4 — •Veronika Fritsch, Svilen Bobev, John L. Sarrao, Uwe Amann, and Oliver Stockert
14:00 TT 20.2 Spin Dynamics of EuCu2(Ge(1−x)Six)2 probed by Electron Spin Resonance — •Tobias Foerster, Joerg Sichelschmidt, Zakir Hossain, and Christoph Geibel
14:00 TT 20.3 Boron induced change of valence state of Eu in EuPd3Bx (0 ≤ x ≤ 0.55) — •Roman Gumeniuk, Claire Loison, Andreas Leithe-Jasper, Walter Schnelle, Ulrich Burkhardt, Marcus Schmidt, Miriam Schmitt, Ulrich Schwarz, and Helge Rosner
14:00 TT 20.4 Coexistence of ferromagnetism and underscreened Kondo effect in uranium compounds — •Natalia Perkins, Jose Roberto Iglesias, and Bernard Coqblin
14:00 TT 20.5 Detailed studies of the resistive superconducting transition in UNi2Al3 thin films — •Michael Foerster, Martin Jourdan, Andrey Zakharov, and Hermann Adrian
14:00 TT 20.6 Magnetic order in CeIn3−xSnx investigated by µSR measurements — •Julia Arndt, Astrid Schneidewind, Oliver Stockert, Daniel Andreica, Nubia Caroca-Canales, Christoph Geibel, and Michael Loewenhaupt
14:00 TT 20.7 Deposition of CeCoIn5 thin films by co-sputtering and evaporation — •Jochen Geerk, Alexander Zaitsev, Rainer Fromknecht, Andre Beck, and Hilbert v. Löhneysen
14:00 TT 20.8 High pressure resistivity studies on YbIr2Si2 — •Monica Macovei, Michael Nicklas, Cornelius Krellner, Zakir Hossain, Christoph Geibel, and Frank Steglich
14:00 TT 20.9 YbNi2Si3: a new Yb based intermetallic compoundAlexander Cosceev, Marc Uhlarz, Thomas Wolf, Peter Adelmann, •Kai Grube, Peter Schweiss, Georg Roth, Rainer Fromknecht, Christoph Sürgers, and Hilbert v. Löhneysen
14:00 TT 20.10 High-field ESR on the Kondo-system YbRh2Si2 — •Uwe Schaufuß, V. Kataev, B. Büchner, J. Sichelschmidt, C. Krellner, C. Geibel, and F. Steglich
14:00 TT 20.11 Magnetotransport across the field-induced quantum phase transition in CeCu5.8Au0.2 — •Marc Uhlarz, Moritz Röger, Tihomir Tomanic, and Hilbert v. Löhneysen
14:00 TT 20.12 DC-Susceptibility of CeCu6−xAux at very low temperatures — •Andreas Hamann, Tihomir Tomanic, Hilbert v. Löhneysen, and Oliver Stockert
14:00 TT 20.13 Quantenphasenübergänge in NbFe2 — •Carsten Albrecht, Manuel Brando, Will Duncan, Dennis Moroni-Klementowicz, Daniel Grüner, Rafik Ballou, Bjorn Fak, Guido Kreiner und F. Malte Grosche
14:00 TT 20.14 Magnetic-field-induced Change of the Fermi Surface in CeBiPt — •M Bartkowiak, B Bergk, Y Skourski, J Wosnitza, I Opahle, S Elgazzar, M Richter, H v Löhneysen, T Yoshino, and T Takabatake
14:00 TT 20.15 Inelastic Neutron Scattering on the Antiferromagnetic Half-Heusler Alloy CeBiPt — •Gernot Goll, Oliver Stockert, Tobias Unruh, Peter Link, K. Shigetoh, and T. Takabatake
14:00 TT 20.16 Kondo effect in low-carrier systems — •Robert Hager and Ralf Bulla
14:00 TT 20.17 Strong inhomogeneities and non-Fermi liquids in randomly depleted Kondo lattices — •Matthias Vojta and Ribhu Kaul
14:00 TT 20.18 Unusual Single Ion Behavior in CeNi8.6Cu0.4Ge4 near a Quantum Critical Phase Transition — •Ludwig Peyker, Ernst-Wilhelm Scheidt, Wolfgang Scherer, Stephan Kehrein, and Herwig Michor
14:00 TT 20.19 Matrix Product States for comparing NRG to DMRG — •Hamed Saberi, Andreas Weichselbaum, and Jan von Delft
14:00 TT 20.20 Coupled-Cluster Method for the Anderson Impurity Model — •Jin-Jun Liang, Clive Emary, and Tobias Brandes
14:00 TT 20.21 Quantum Monte-Carlo scheme for the solution of the Kondo impurity problem with an arbitrary density of free electron states — •Evgeny Gorelov, Andrey Zhuravlev, Alexey Rubtsov, and Alexander Lichtenstein
14:00 TT 20.22 Correlation Functions in the Non-Equilibrium Anisotropic Kondo Model — •Peter Fritsch and Stefan Kehrein
14:00 TT 20.23 High-Field NMR Relaxation Rates in Spin-1/2 Heisenberg-Chains — •Simon Großjohann, Wolfram Brenig, Hannes Kühne, and Hans-Henning Klauß
14:00 TT 20.24 Quantum Critical Spin Dynamics of a Cu(II) S=1/2 antiferromagnetic Heisenberg chain studied by 13C-NMR spectroscopy — •H. Kühne, J. Litterst, H.-H. Klauss, S. Grossjohann, W. Brenig, A.P. Reyes, P.L. Kuhns, C.P. Landee, M.M. Turnbull, H.-J. Grafe, J. Haase, and B. Büchner
14:00 TT 20.25 Magnetic properties and evidence for lattice instabilities of the frustrated 2D s=1/2 systems (CuCl)LaNb2O7 and (CuBr)LaNb2O7. — •Patric Scheib, Vladimir Gnezdilov, Peter Lemmens, Yuri Georgii Pashkevich, Kazuyoshi Yoshimura, Yoshitami Ajiro, Taro Kitano, and Hiroshi Kageyama
14:00 TT 20.26 Bilayer antiferromagnet with four-spin interaction — •Thomas C. Lang and Anders W. Sandvik
14:00 TT 20.27 Causes of weak-localization of electrons on liquid helium — •Jürgen Klier, Annie Wakata, and Paul Leiderer
14:00 TT 20.28 Anion ordering transition in organic quantum spin chains (TMTTF)2X investigated by ESR and SQUID — •Shadi Yasin, Belal Salameh, Michael Dumm, and Martin Dressel
14:00 TT 20.29 Low-temperature study of an S =1/2 antferromagnetic Heisenberg chain close to the field-induced quantum critical point — •K. Remović-Langer, Y. Tsui, U. Tutsch, V. Pashchenko, B. Wolf, A. V. Prokofiev, and M. Lang
14:00 TT 20.30 7Li NMR and ESR study of the Cu spin dynamics and Li mobility in the frustrated spin-1/2 chain cuprate Li2ZrCuO4 — •Y. Arango, E. Vavilova, V. Kataev, S.-L. Drechsler, A. Moskvin, O. Volkova, A. Vasilyev, and B. Büchner
14:00 TT 20.31 In2VO5 - a new low dimensional S = 1/2 system probed by magnetic resonance — •M. Yehia, E. Vavilova, T. Taetz, A. Möller, V. Kataev, B. Büchner, N. Hollmann, and J.A. Mydosh
14:00 TT 20.32 Magnetic heat conduction in Ca-doped SrCuO2 spin chains and related systemsPatrick Ribeiro, •Nikolai Hlubek, Anja Waske, Christian Hess, and Bernd Büchner
14:00 TT 20.33 Electrochemical doping of Vanadium Oxide Nanotubes — •A. Popa, I. Hellmann, R. Klingeler, V. Kataev, E. Vavilova, Y. Arango, C. Täschner, X. Liu, M. Knupfer, C. Masquelier, and B. Büchner
14:00 TT 20.34 Magnetic exchange interactions in 1D and 2D cupratesUlrike Nitzsche, Stefan-Ludwig Drechsler, and •Helge Rosner
14:00 TT 20.35 Anisotropy of superconducting critical fields of α-(BEDT-TTF)2KHg(SCN)4 under pressure — •Sebastian Jakob, Karl Neumaier, Werner Biberacher, and Mark Kartsovnik
14:00 TT 20.36 ESR investigations of the phase diagram of 2-dim organic conductors in the vicinity of the Mott-Hubbard transition — •Shadi Yasin, Michael Dumm, and Martin Dressel
14:00 TT 20.37 Probing the metal-insulator transition in κ−(ET)2Cu2(CN)3 by hydrostatic He-gas pressure experimentsChristian Strack, Michael Lang, and •John Schlueter
14:00 TT 20.38 Spin liquid ground state in the frustrated S=1/2 square lattice compound PbVO3Alexander Tsirlin, Roman Shpanchenko, Evgeny Antipov, Alexei Belik, Eiji Takayama-Muromachi, and •Helge Rosner
14:00 TT 20.39 Initial stages of growth of the strongly correlated Fe3O4 thin films — •Stefan Klein, Chun Fu Chang, Zhiwei Hu, Philipp Hansmann, Hong-Ji Lin, Chien-Te Chen, and Liu Hao Tjeng
14:00 TT 20.40 X-ray absorption and photoemission study of spin state and metal-insulator transition inGdBaCo2O5.47 — •Z. Hu, Hua Wu, T. Koethe, M. W. Haverkort, T. Burnus, J. Gegner, C. Zobel, T. Lorenz, S. N. Barilo, H.-J. Lin, N. B. Brookes, C. T. Chen, and L. H. Tjeng
14:00 TT 20.41 Spectral line shapes in soft x-ray diffraction — •C. Schüßler-Langeheine, J. Schlappa, M. W. Haverkort, and L. H. Tjeng
14:00 TT 20.42 Coulomb correlations in Cu2O and ZnO: Importance of both transition-metal Udd and Oxygen Upp — •Sven Binder, Hua Wu, Thomas Koethe, Stefan Klein, and Liu Hao Tjeng
14:00 TT 20.43 Magnetic and electrical properties of EuC2 — •Oliver Heyer, Derk Wandner, Nils Hollmann, Uwe Ruschewitz, John Mydosh, Axel Freimuth, and Thomas Lorenz
14:00 TT 20.44 Crystal growth, dielectric and magnetic investigation of 3d transition metal tungstates MWO4 (M = Mn, Fe, Co, Ni) — •Sven Jodlauk, Daniel Khomskii, Petra Becker, Ladislav Bohatý, Oliver Heyer, Nils Hollmann, Harald Kierspel, Thomas Lorenz, and John Mydosh
14:00 TT 20.45 Structural and magnetic dimers in the spin-gapped system CuTe2O5 — •Hans-Albrecht Krug von Nidda, Joachim Deisenhofer, Rushana Eremina, Tatiana Gavrilova, Mike Whangbo, and Alois Loidl
14:00 TT 20.46 Electric transport properties of LaAlO3/SrTiO3 interfaces studied by scanning electron microscopy — •Christian Gürlich, Matthias Ruoff, Stefan Thiel, Christof Schneider, German Hammerl, Christoph Richter, Jochen Mannhart, Reinhold Kleiner, and Dieter Koelle
14:00 TT 20.47 Unoccupied electronic structure of TiOCl studied by XAS — •Sebastian Glawion, Götz Berner, Matthias Schlachter, Michael Sing, Markus Hoinkis, Gianina Gavrila, Leonardo Pisani, Roser Valenti, and Ralph Claessen
14:00 TT 20.48 Electronic Raman scattering and phonon anomalies in NaxCoO2.Vladimir Gnezdilov, Patric Scheib, •Peter Lemmens, Fangcheng Chou, Lambert Alff, Yoshiharu Krockenberger, Hanns-Ulrich Habermeier, Chengtian Lin, and Bernhard Keimer
14:00 TT 20.49 Low-Temperature Antiferromagnetic Phase Transition in α-YbPdSn — •Tobias Görlach, Sergiy Putselyk, Andreas Hamann, Tihomir Tomanic, Falko Schappacher, Rainer Pöttgen, and Hilbert v. Löhneysen
14:00 TT 20.50 Thermal expansion and specific heat of magnetically frustrated (Ni1−xCox)3V2O8 — •Qin Zhang, William Knafo, Kai Grube, Hilbert v. Löhneysen, Christoph Meingast, and Thomas Wolf
14:00 TT 20.51 Magnetisation of ferromagnetic Pr5Si3 under hydrostatic pressure — •Stefan Legl, Christian Pfleiderer, Dmitri Souptel, and Günter Behr
14:00 TT 20.52 Transport and Ordering of Polarons in PrCaMnO: Electric induced Colossal Resistance Effect — •Sebastian Schramm, Peter Moschkau, Jörg Hoffmann, and Christian Jooss
14:00 TT 20.53 Development of an array of calorimetric low temperature detectors for heavy ions — •A. Echler, V. Adrianov, A. Bleile, P. Egelhof, S. Ilieva, O. Kiselev, S. Kraft-Bermuth, and J. P. Meier
14:00 TT 20.54 Orbital responses in 3d1 perovskite titanates — •Luis Craco
14:00 TT 20.55 Embedding procedure for ab-initio correlation calculations in group II metalsElena Voloshina, Nicola Gaston, and •Beate Paulus
14:00 TT 20.56 Mean-field theory of quadrupolar ordering in YbRu2Si2 — •Tetsuya Takimoto and Peter Thalmeier
14:00 TT 20.57 Realistic description of TTF-TCNQ using massively parallel exact diagonalization — •Andreas Dolfen and Erik Koch
14:00 TT 20.58 Antiferromagnetism and Anderson localization of correlated lattice fermions with disorder — •Krzysztof Byczuk, Walter Hofstetter, and Dieter Vollhardt
14:00 TT 20.59 Local moment approach as an impurity solver of multi-orbital dynamical mean-field theory for correlated electronsAnna Kauch and •Krzysztof Byczuk
14:00 TT 20.60 Effect of disorder on ferromagnetism in the periodic Anderson model within dynamical mean-field theory — •Unjong Yu, Krzysztof Byczuk, and Dieter Vollhardt
14:00 TT 20.61 Inhomogenous Hubbard model for solids and optical traps — •Rolf Helmes, Luis Craco, and Achim Rosch
14:00 TT 20.62 Metal-to-insulator transitions in the two-plane Hubbard model — •David Heilmann
14:00 TT 20.63 Magnetic properties of correlated electrons coupled to localized spins — •Robert Peters and Thomas Pruschke
14:00 TT 20.64 Sum rules and vertex corrections for electron-phonon interaction — •Oliver Rösch, Giorgio Sangiovanni, and Olle Gunnarsson
14:00 TT 20.65 One- and two-particle excitations in the doped 2-dim. Hubbard model; a DCA calculation — •Stephan Hochkeppel, Fakher Assaad, and Werner Hanke
14:00 TT 20.66 Numerical calculation of Wegner estimates for the three-dimensional Bernoulli-Anderson model — •Peter Karmann and Michael Schreiber
14:00 TT 20.67 Pseudogap and the spin-polaron band in the Hubbard model — •Alexei Sherman and Michael Schreiber
14:00 TT 20.68 From antiferromagnetism to singlet phase in the Double Bethe lattice — •Hartmut Hafermann, Mikhail Katsnelson, and Alexander Lichtenstein
14:00 TT 20.69 Wither the sliding Luttinger liquid phase in the planar pyrochlore — •Marcelo Arlego and Wolfram Brenig
14:00 TT 20.70 Spinon Deconfinement at the Quantum Critical Point of 2+1 D Antiferromagnets — •Zaira Nazario and David Santiago
14:00 TT 20.71 Non-Abelian Statistics in a Quantum Antiferromagnet — •Ronny Thomale and Martin Greiter
14:00 TT 20.72 Auxiliary Fermions and The Popov–Fedotov-Trick: Application to The Phase Diagram of The Bi-Layer Heisenberg Model — •Johannes Reuther, Jan Brinckmann, and Peter Woelfle
14:00 TT 20.73 Density functional theory for spinless fermions in one dimension — •Stefan Schenk, Peter Schwab, and Ulrich Eckern
14:00 TT 20.74 On Heat Conduction in Spin Chain Compounds — •Peter Jung, Rolf Helmes, Efrat Shimshoni, and Achim Rosch
14:00 TT 20.75 Spinon confinement and the Haldane gap of SU(n) spin chains — •Stephan Rachel and Martin Greiter
14:00 TT 20.76 Dominant particle-hole contributions to the phonon dynamics in the spinless one-dimensional Holstein model — •Steffen Sykora, Arnd Hübsch, and Klaus Becker
14:00 TT 20.77 The one-dimensional Hubbard model: A benchmark for variational cluster approximations — •Matthias Balzer, Michael Potthoff, and Werner Hanke
14:00 TT 20.78 Efficient simulation of one-dimensional many-body quantum systems — •Alex Cojuhovschi, Malcolm Einhellinger, and Eric Jeckelmann
14:00 TT 20.79 Deconvolution procedures for dynamical DMRG spectra — •Martin Paech and Eric Jeckelmann
14:00 TT 20.80 Improved scaling for the Matrix Product State alternative to DMRG — •Peter Pippan, Steven White, and Hans Gerd Evertz
14:00 TT 20.81 Phonon simulations with arbitrary dispersions — •Hans Gerd Evertz, Franz Michel, and Peter Pippan
14:00 TT 20.82 Fermi-edge singularities in the mesoscopic regime — •Martina Hentschel
14:00 TT 20.83 Anderson Orthogonality Catastrophe in Mesoscopic Systems — •Georg Röder, Swarnali Bandopadhyay, and Martina Hentschel
14:00 TT 20.84 Low-density expansion for the two-dimensional electron gas — •Francesca Sauli and Peter Kopietz
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