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Berlin 2008 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 32: Correlated Electrons: Poster Session

Thursday, February 28, 2008, 14:00–18:00, Poster B

14:00 TT 32.1 Matrix product state approach for a two-lead, multi-level Anderson impurity model — •Andreas Holzner, Andreas Weichselbaum, and Jan von Delft
14:00 TT 32.2 Deconvolution procedures for dynamical DMRG spectra — •Martin Paech and Eric Jeckelmann
14:00 TT 32.3 Quantum Phase Transitions in the Bosonic Single-Impurity Anderson Model — •Hyun-Jung Lee and Ralf Bulla
14:00 TT 32.4 Entanglement entropy dynamics in quantum impurity systems — •David Roosen, Karyn Le Hur, and Walter Hofstetter
14:00 TT 32.5 Properties of a molecular 3-level impurity coupled to a fermionic bath — •Jon-Olaf Krisponeit, Frithjof B. Anders, and Gerd Czycholl
14:00 TT 32.6 The Kondo box: a mean-field approachRainer Bedrich, •Sebastien Burdin, and Martina Hentschel
14:00 TT 32.7 Functional Renormalization Group Approach to a Single-Level QuantumDot in Non-Equilibrium — •Andreas Dirks, Riccardo Gezzi, and Thomas Pruschke
14:00 TT 32.8 Scattering of heavy fermions and slow spin waves off fast phonons — •David Rasch and Achim Rosch
14:00 TT 32.9 Kondo volume collapse and the Kondo breakdown transition in Heavy Fermions — •Andreas Hackl and Matthias Vojta
14:00 TT 32.10 Heavy-fermion metals with hybridization nodes: Unconventional Fermi liquids and competing phases — •Matthias Vojta and Heidrun Weber
14:00 TT 32.11 Ambient-pressure thermodynamic measurements on UGe2 — •Frédéric Hardy, Christoph Meingast, Hilbert v. Löhneysen, Jacques Flouquet, Andrew Huxley, Jason Lashley, Robert A. Fisher, and Norman E. Phillips
14:00 TT 32.12 Dynamic magnetic order in CeCu2Si2 — •O. Stockert, J. Arndt, E. Faulhaber, H.S. Jeevan, C. Geibel, P. Fouquet, and F. Steglich
14:00 TT 32.13 Magnetic excitations in CeCu2Ge2 — •Astrid Schneidewind, Oliver Stockert, Karin Schmalzl, Micha Deppe, Julia Arndt, Christoph Geibel, Frank Steglich, and Michael Loewenhaupt
14:00 TT 32.14 µSR-studies on the Heavy-Fermion-Superconductor CeCoIn5 — •Johannes Spehling, Jeff Sonier, Eric Bauer, Robert Heffner, and Hans-Henning Klauss
14:00 TT 32.15 Scanning Tunneling Spectroscopy studies on heavy fermion superconductors — •Stefan Ernst, Steffen Wirth, Hirale Jeevan, Christoph Geibel, Zachary Fisk, and Frank Steglich
14:00 TT 32.16 Magnetic linear dichroism as new tool to determinecrystal fields in cubic Ce, Yb and Pr compounds — •Peter Koerner, Maurits Haverkort, Thomas Willers, Zhiwei Hu, Andrea Severing, and Liu Hao Tjeng
14:00 TT 32.17 New correlated materials with phosphorus: A challenge for the crystal grower — •Anton Jesche, Cornelius Krellner, Nubia Caroca-Canales, Arpana Prasad, and Christoph Geibel
14:00 TT 32.18 Preparation of Sr1−xCaxRuO3 thin films — •Melanie Schneider, Vasile Mosneaga, and Philipp Gegenwart
14:00 TT 32.19 Structural studies on transition metal oxides with only one or two electrons in the 3d shell — •A. C. Komarek, T. Möller, M. Isobe, M. Gottschlich, M. Meven, M. Hölzel, A. Senyshyn, W. Morgenroth, D. Trots, M. Grüninger, and M. Braden
14:00 TT 32.20 Magnetic order of CeNixGa4−x — •Veronika Fritsch and Hilbert v. Löhneysen
14:00 TT 32.21 Uniaxial pressure and strain dependences of the characteristic energies in CeCu6−xAux — •Kai Grube, Stefanie Drobnik, Roland Schäfer, Frédéric Hardy, Christoph Meingast, Oliver Stockert, and Hilbert von Löhneysen
14:00 TT 32.22 High-pressure magnetization measurements on single-crystalline CoS2 — •Sandra Drotziger, Kai Grube, Marc Uhlarz, Christian Pfleiderer, John Wilson, and Hilbert von Löhneysen
14:00 TT 32.23 CeRu2Si2 and Quantum Critical Metamagnetism? — •Franziska Weickert, Philipp Gegenwart, Markus Garst, and Frank Steglich
14:00 TT 32.24 Development of the magnetic order in Yb(Rh1−xCox)2Si2 — •Christoph Klingner, Cornelius Krellner, Tanja Westerkamp, Niels Oeschler, Manuel Brando, Christoph Geibel, and Frank Steglich
14:00 TT 32.25 Thermodynamics of Spin-Ladder and Spin-Chain Systems close to Quantum Criticality — •J. Rohrkamp, T. Lorenz, A. V. Sologubenko, O. Heyer, M. Garst, F. Anfuso, A. Rosch, K. Krämer, and M. M. Turnbull
14:00 TT 32.26 Search for coupled S=1/2 dimer systems in a new class of nitronyl nitroxides biradicals — •K. Remović-Langer1, U. Tutsch, C. T. Pham, M. Baumgarten, E. A. Mostovich, B. Wolf, and M. Lang
14:00 TT 32.27 Structural and magnetic properties of a betaine-bridged trimer Cu2+ spin system — •K. Remović-Langer, B. Wolf, L. Wiehl, E. Haussühl, B. Winkler, N. Hasselmann, F. Sauli, P. Kopietz, and M. Lang
14:00 TT 32.28 An effective dimer-monomer model for the distorted diamond chain azurite (Cu3(CO3)2(OH)2) — •Sebastian Köhler, Bernd Wolf, Andreas Brühl, Mariano de Souza, Katarina Remović-Langer, Yeekin Tsui, Ulrich Tutsch, Jürgen Schreuer, and Michael Lang
14:00 TT 32.29 Phase diagram close to a conductance plateau transition in a quantum wire — •Matthias Sitte, Julia S. Meyer, Achim Rosch, and Markus Garst
14:00 TT 32.30 Electric and magnetic Properties of the Kagomé Systems YBaCo4O7+δ and YBaCo3MO7 (M=Fe,Al) — •Nils Hollmann, Martin Valldor, Zhiwei Hu, Antoine Maignan, Joachim Hemberger, Arata Tanaka, Liu Hao Tjeng, Thomas Lorenz, and John Mydosh
14:00 TT 32.31 Preparation and Characterization of BaCoO2 and Sr-doped EuCoO3 — •Marco Reuther, Kerstin Dönecke, John Mydosh, Thomas Lorenz, and Martin Valldor
14:00 TT 32.32 Resonant diffraction from charge and spin ordering in La1.5Sr0.5CoO4 — •Christian Schüßler-Langeheine, Matthias Cwik, Chun Fu Chang, Hsueh-Hung Wu, Marcel Buchholz, Zhiwei Hu, Thomas Willers, Enrico Schierle, Ralf Feyerherm, Detlef Schmitz, Mohammed Benomar, Markus Braden, and L. Hao Tjeng
14:00 TT 32.33 Orbital degree of freedom in La7/8Sr1/8MnO3: Temperature-dependent rearrangement of orbital states — •Michael Merz, Christian Pinta, Sebastian Prinz, Peter Nagel, Andrei Samartsev, Stefan Schuppler, Pascal Reutler, and Bernd Büchner
14:00 TT 32.34 Surface topographic and spectroscopic studies of charge ordering La0.5Sr1.5MnO4 using Scanning Tunneling Microscopy — •Paul Sass, Grzegorz Urbanik, Christian Hess, Torben Hänke, Bernd Büchner, Antoni Ciszewski, Pascal Reutler, and Alexandre Revcolevschi
14:00 TT 32.35 Magnetic and electrical properties of EuC2+x — •Oliver Heyer, Derk Wandner, Nils Hollmann, Uwe Ruschewitz, Thomas Lorenz, and John A. Mydosh
14:00 TT 32.36 Electronic properties of transition metal impurities in MgO thin films — •Rainald Gierth, Tim Haupricht, Chun-Fu Chang, Zhiwei Hu, Thomas Koethe, H. H. Hsieh, H.-J. Lin, C. T. Chen, and Liu Hao Tjeng
14:00 TT 32.37 Correlated band structure of 3d2 vanadates — •David Heilmann and Eva Pavarini
14:00 TT 32.38 Quantum Monte Carlo Simulations in Continuous Time: An Application to the Hubbard Model — •Sebastian Fuchs and Thomas Pruschke
14:00 TT 32.39 Mott transition in one dimension: Benchmarking dynamical cluster approaches — •Matthias Balzer, Werner Hanke, and Michael Potthoff
14:00 TT 32.40 A new DCA scheme for calculating two-particle correlation functions of the 2D Hubbard model — •Stephan Hochkeppel, Fakher Assaad, and Werner Hanke
14:00 TT 32.41 Pseudogap and magnetic incommensurability in the Hubbard model — •Michael Schreiber and Alexei Sherman
14:00 TT 32.42 Direct calculation of self-energies of the infinite-dimensional Hubbard model by D-DMRG — •Patrick Grete, Carsten Raas, and Götz S. Uhrig
14:00 TT 32.43 Electronic transitions in a Mott-Hubbard insulator under external perturbations — •Luis Craco and Helge Rosner
14:00 TT 32.44 Boson-controlled quantum transport — •Holger Fehske, Andreas Alvermann, Gerhard Wellein, and David M. Edwards
14:00 TT 32.45 Time evolution in 2D quantum percolation — •Gerald Schubert and Holger Fehske
14:00 TT 32.46 Projective renormalization approach (PRM) to the one-dimensional Hubbard model — •Christian Köhler, Steffen Sykora, and Klaus W. Becker
14:00 TT 32.47 Dynamical properties of the one-dimensional Holstein model — •Peter Pippan and Hans Gerd Evertz
14:00 TT 32.48 Dispersion renormalization in quasi-1d interacting electron systems — •Jutta Ortloff and Carsten Honerkamp
14:00 TT 32.49 Approaching experimental setups: 1D quantum wire coupled to 2D leads — •Peter Wächter, Volker Meden, and Kurt Schönhammer
14:00 TT 32.50 Entanglement entropy and quantum phase transition — •Alex Cojuhovschi and Eric Jeckelmann
14:00 TT 32.51 Quasistatic spin correlations in the frustrated spin-chain cuprate Li2ZrCuO4 above TN — •Yulieth Arango, Evgeniya Vavilova, Vladik Kataev, Olga Volkova, Aleksandr Vasilyev, and Bernd Buechner
14:00 TT 32.52 High-field magnetization studies of the quasi-1D quantum spin systems (Y,Nd)2BaNiO5 and Li2ZrCuO4 — •Florian Kretzschmar, Rüdiger Klingeler, Natalia Tristan, Yulieth Arango, Stefan-Ludwig Drechsler, Elena Popova, Olga Volkova, Alexander Vasiliev, Harison Rakoto, and Bernd Büchner
14:00 TT 32.53 Optical Excitations of the Spin-Ladder Sr14−xCaxCu24O41 from FIR to UV — •C. Hilgers, M. Grüninger, M. Reuther, U. Ammerahl, P. Ribeiro, B. Büchner, and A. Revcolevschi
14:00 TT 32.54 Magnetic excitations in S=1/2 chains and five-leg ladders: an optical study — •Eva Benckiser, Markus Grüninger, Marco Reuther, Thomas Lorenz, Pascal Ribeiro, Christian Hess, and Alexandre Revcolevschi
14:00 TT 32.55 Unusual increase of the hole mobility in the quasi-1D Sr14Cu24O41 upon Zn doping — •M. Yehia, P. Ribeiro, F. Kretzschmar, V. Kataev, C. Hess, R. Klingeler, B. Büchner, H. ElHaes, G. Roth, U. Ammerahl, and A. Revcolevschi
14:00 TT 32.56 Electrical transport measurements in the Ca-doped ladders Sr14−xCaxCu24O41 — •M. E. Navarro Fuentes, A. Narduzzo, H. ElHaes, P. Ribeiro, C. Hess, B. Büchner, U. Ammerahl, and A. Revcolevschi
14:00 TT 32.57 Electrochemical doping of Vanadium Oxide Nanotubes — •A. Popa, I. Hellmann, R. Klingeler, V. Kataev, E. Vavilova, Y. Arango, C. Täschner, M. Knupfer, H.-H. Klauß, C. Masquelier, and B. Büchner
14:00 TT 32.58 Investigations on oxide nanocompounds — •Ingo Hellmann, Andreia Popa, Yulieth Arango, Evgenia Vavilova, Anupama Parameswaran, Rüdiger Klingeler, Vladislav Kataev, Galina Zakharova, Christine Täschner, Martin Knupfer, and Bernd Büchner
14:00 TT 32.59 Magnetic ordering in organic transition-metal compounds — •L. Huang, R. Beyer, T. Papageorgiou, O. Ignatchik, T. Herrmannsdörfer, J. Wosnitza, S. Gemming, J. Manson, and J. Schlueter
14:00 TT 32.60 Magnetostriction and thermal expansion of the spin-ladder compound (C5H12N)2CuBr4Thomas Lorenz, •Fabrizio Anfuso, Markus Garst, Achim Rosch, Oliver Heyer, Christian Rüegg, and Karl Krämer
14:00 TT 32.61 Thermal conductivity of spin-1/2 chain compound LiCu2O2 — •Agnieszka Kondrat, Patrick Ribeiro, Nikolai Hlubek, Christian Hess, Bernd Büchner, and Sang-Wook Cheong
14:00 TT 32.62 Mott-Hubbard vs. charge-transfer type: optical conductivity of LaSrMnO4 — •A. Gössling, M.W. Haverkort, M. Benomar, H. Wu, D. Senff, T. Möller, M. Braden, J.A. Mydosh, and M. Grüninger
14:00 TT 32.63 1/fα–noise studies of quasi–2D organic charge–transfer salts — •Jens Brandenburg, Jens Müller, and John Schlueter
14:00 TT 32.64 Magnetic Field Effects on a Quasi-2D Organic Compound Close to the Mott Transition — •Mariano de Souza, Andreas Bruehl, Christian Strack, Bernd Wolf, Dieter Schweitzer, and Michael Lang
14:00 TT 32.65 Two-channel conductivity in a layered organic metal characterized by a weakly incoherent interlayer transport regime. — •Mark V. Kartsovnik, Werner Biberacher, and Natalia D. Kushch
14:00 TT 32.66 Magnetic and superconducting properties of metal and oxide nanoclusters on biological templates — •C. Walter, M. Bartkowiak, O. Ignatchik, T. Herrmannsdörfer, J. Wosnitza, M. Merroun, K. Pollmann, J. Raff, and S. Selenska-Pobell
14:00 TT 32.67 The ground state phase diagram of the Kondo-lattice model — •Sören Henning and Wolfgang Nolting
14:00 TT 32.68 Calculation of Magnetic Phases and Resistivity in an Extended Two-band Kondo Lattice Model — •Martin Stier and Wolfgang Nolting
14:00 TT 32.69 Effective Models for Undoped and Doped Spin Ladders from Self-Similar Continuous Unitary Transformations — •Sebastian Duffe and Götz Uhrig
14:00 TT 32.70 Does There Exist a Baym-Kadanoff Construction for the Heisenberg Model? — •Stephan Filor and Thomas Pruschke
14:00 TT 32.71 The phase diagram of the J1-J2-Heisenberg model using auxiliary fermions — •Johannes Reuther, Jan Brinckmann, and Peter Woelfle
14:00 TT 32.72 Raman Scattering from the S=1/2 Heisenberg Antiferromagnet on the Triangular LatticeNatalia Perkins and •Wolfram Brenig
14:00 TT 32.73 Ground state phases of the spin-1/2 J1J2 frustrated Heisenberg model on the square lattice: a coupled cluster study — •Rachid Darradi, Jörg Schulenburg, Sven Krüger, Ronald Zinke, and Johannes Richter
14:00 TT 32.74 The influence of the inter-chain coupling on the spiral ground state of the frustrated quasi-one-dimensional spin-half Heisenberg magnet — •ronald zinke, stefan-ludwig drechsler, and johannes richter
14:00 TT 32.75 Optical spectroscopy on multiferroic MnWO4 — •Thomas Möller, Joachim Hemberger, Markus Grüninger, Andrei Pimenov, Alexey Shuvaev, Petra Becker-Bohatý, and Ladislav Bohatý
14:00 TT 32.76 High-field Gd3+–ESR on the spin-antiferromagnet GdNi2B2C — •Uwe Schaufuß, Ferenc Murányi, Vladislav Kataev, Mathias Dörr, Martin Rotter, and Bernd Büchner
14:00 TT 32.77 Heat capacity, thermal expansion and magnetic properties of the itinerant ferromagnet MnSi — •Qin Zhang, William Knafo, Frédéric Hardy, Kai Grube, Peter Schweiss, Hilbert v. Löhneysen, Christoph Meingast, and Thomas Wolf
14:00 TT 32.78 Electronic Quasiparticles on the Spin-Wave Energy Scale in Ferromagnets — •Andreas Hofmann, Xiaoyu Cui, Jörg Schäfer, Eli Rotenberg, Luc Patthey, and Ralph Claessen
14:00 TT 32.79 Magnetic ordering in striped nickelates — •Udo Schwingenschlögl, Cosima Schuster, and Raymond Frésard
14:00 TT 32.80 Ferromagnetism in the multi-orbital periodic Anderson model — •Unjong Yu, Krzysztof Byczuk, and Dieter Vollhardt
14:00 TT 32.81 Valence transition in the periodic Anderson model — •Alexander Mai, Nham Phan Van, and Klaus W. Becker
14:00 TT 32.82 Valence transition in the periodic Anderson model in the presence of a Coulomb repulsion between f- and conduction electrons — •Nham Phan Van, Alexander Mai, and Klaus W. Becker
14:00 TT 32.83 Phase transition in the Hubbard-Holstein model with infinitely large Coulomb repulsion — •Andreas Eberlein, Steffen Sykora, and Klaus W. Becker
14:00 TT 32.84 Coexistence of superconductivity and charge-density waves in a two-dimensional Holstein model at half-filling — •Steffen Sykora, Arnd Hübsch, and Klaus W. Becker
14:00 TT 32.85 Mapping of parent Hamiltonians: spin chains and the fractional quantum Hall effect — •Ronny Thomale and Martin Greiter
14:00 TT 32.86 Lifetime of spinless fermions on a square lattice — •Mehmet Kadiroglu and Jochen Gemmer
14:00 TT 32.87 Quantum Monte Carlo Study of SSH and breathing type Hamiltonians — •Hans Gerd Evertz and Peter Pippan
14:00 TT 32.88 A Multi-Scale Many-Body Approach for Strongly Correlated Electrons — •Shuxiang Yang, Thomas Pruschke, and Mark Jarrell
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