Regensburg 2010 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 27: CE: Poster Session

Mittwoch, 24. März 2010, 14:00–18:00, Poster D1

14:00 TT 27.1 Soft-Mode Behaviour of Phonons in the CDW Systems NbSe2 and TiSe2 — •Roland Hott, Rolf Heid, Klaus-Peter Bohnen, Frank A. Weber, Stephan Rosenkranz, John-Paul A. Castellan, and Ray Osborn
14:00 TT 27.2 Dilatometric Investigations at the Charge-Ordering Transition in (TMTTF)2X — •Daniel Hofmann, Mariano de Souza, Christian Balz, P. Foury-Leylekian, A. Moradpour, J.-P. Pouget, and Michael Lang
14:00 TT 27.3 Energy gap in charge-density-wave systems — •Reinhard Rossner, Hans-Martin Eiter, Michela Lavagnini, Leonardo Tassini, Bernhard Muschler, Jiun-Haw Chu, Nancy Ru, Ian R. Fisher, Leonardo Degiorgi, and Rudi Hackl
14:00 TT 27.4 X-ray absorption of hole-doped and electron-doped Pr1−xCaxMnO3: Doping-dependent transfer of spectral weight — •Stephan Uebe, Andrea Assmann, Michael Merz, Prabir Pal, Manas Dalai, Biju Sekhar, Hilbert von Löhneysen, Peter Nagel, and Stefan Schuppler
14:00 TT 27.5 EELS-study of La1−xSr1+xMnO4 — •Matthias Schrade, Roberto Kraus, Pascal Reutler, Jochen Geck, Martin Knupfer, and Bernd Büchner
14:00 TT 27.6 Orbitons and bi-orbitons in GdVO3 and YVO3 observed by RIXS — •Luis Mäder, Komalavalli Thirunavukkuarasu, Eva Benckiser, Giacomo Ghiringhelli, Marco Moretti, Graeme R. Blake, Nandang Mufti, Agung A. Nugroho, Thomas T. M. Palstra, Maurits Haverkort, Thorsten Schmitt, and Markus Grüninger
14:00 TT 27.7 HAXPES analysis of LaAlO3/SrTiO3 thin films grown under various oxygen partial pressures — •Florian Pfaff, Andreas Müller, Götz Berner, Wolfgang Drube, Michael Sing, and Ralph Claessen
14:00 TT 27.8 Preparation and characterization of PdCoO2 thin films grown by Pulsed Laser Deposition — •Stefan Hirsch, Philipp Komissinskiy, and Lambert Alff
14:00 TT 27.9 Superconductivity in the hybrid dichalcogenide 18R-SnSe2{CoCp2}x — •Michael Herzinger, Robert Miller, Sandra Altmannshofer, Ernst–Wilhelm Scheidt, and Wolfgang Scherer
14:00 TT 27.10 Hard x-ray photoemission spectroscopy on LaAlO3/LaNiO3 multilayers — •Patrick Helmecke, Götz Berner, Michael Sing, Johannes Walde, Eva Benckiser, Georg Cristiani, Hanns-Ulrich Habermeier, and Ralph Claessen
14:00 TT 27.11 Single crystal growth of CeNi2Ge2 using floating zone technique — •Christoph Bergmann, H. S. Jeevan, Christoph Geibel, and Philipp Gegenwart
14:00 TT 27.12 Magnetic anisotropy of flux-grown of CeAu2Ge2 — •Veronika Fritsch, Gerda Fischer, Peter Pfundstein, Bernd Pilawa, and Hilbert v. Löhneysen
14:00 TT 27.13 Sample preparation and magnetic properties of CeTiGe3 — •Wolfram Kittler, Gerda Fischer, Veronika Fritsch, and Hilbert v. Löhneysen
14:00 TT 27.14 Electron spin resonance of the Yb 4f-moment in Yb(Rh1−xCox)2Si2 — •Thomas Gruner, Jörg Sichelschmidt, Christoph Klingner, Cornelius Krellner, Christoph Geibel, and Frank Steglich
14:00 TT 27.15 Low-temperature magnetization measurements on Yb(Rh0.93Co0.07)2Si2 — •Luis Pedrero, Manuel Brando, Cornelius Krellner, Christoph Geibel, and Frank Steglich
14:00 TT 27.16 Low-T magnetic phase diagram of Yb(Rh0.73Co0.27)2Si2 — •Stefan Lausberg, Christoph Klingner, Cornelius Krellner, Manuel Brando, Christoph Geibel, and Frank Steglich
14:00 TT 27.17 Far-infrared optical conductivity of CeCu2Si2 — •Alexander Herzog, Jörg Sichelschmidt, Shin-ichi Kimura, Christoph Geibel, Hirale Jeevan, and Frank Steglich
14:00 TT 27.18 In situ preparation of CeIn3 thin films by co-sputtering — •Alexander Zaitsev, Andre Beck, Rainer Fromknecht, Markus Wissinger, Rudolf Schneider, Jochen Geerk, and Hilbert v. Löhneysen
14:00 TT 27.19 Anisotropy in the microwave conductivity of UNi2Al3 — •Katrin Steinberg, Marc Scheffler, Martin Dressel, and Martin Jourdan
14:00 TT 27.20 Equivalence of pressure and concentration tuning in CeCu6−xAux — •O. Stockert, A. Hamann, V. Fritsch, A. Schneidewind, and H. v. Löhneysen
14:00 TT 27.21 Luttinger-Ward functional approach in the Eliashberg framework : A systematic derivation of scaling for thermodynamics near a quantum critical point — •Adel Benlagra, Ki-Seok Kim, and Catherine Pépin
14:00 TT 27.22 Spin density wave quantum phase transition in the LuFe2Ge2/YFe2Ge2 system — •Zhuo Feng and Malte Grosche
14:00 TT 27.23 Ferromagnetic quantum phase transition in Sr1−xCaxRuO3 thin films — •Melanie Schneider, Vasile Moshnyaga, Philipp Gegenwart, Markus Wissinger, and Dirk Fuchs
14:00 TT 27.24 Low temperature magnetoresistance of different strongly correlated metals close to a quantum phase transition — •M. Schubert, K. Winzer, M. Schneider, H.S. Jeevan, and P. Gegenwart
14:00 TT 27.25 Quantum Dissipation in Spin Systems: Spin-Boson Model and its Quantum Phase Transition — •André Winter and Heiko Rieger
14:00 TT 27.26 Shubnikov-de Haas oscillations in Ca3Ru2O7 under pressure — •Lina Klintberg, Swee Goh, Naoki Kikugawa, Andrew Mackenzie, Michael Sutherland, and Malte Grosche
14:00 TT 27.27 Quantum phase transition in a two-subband quantum wire — •Tobias Meng, Mehul Dixit, Markus Garst, Julia Meyer, and Achim Rosch
14:00 TT 27.28 The ferromagnetic phase transition in Sr1−xCaxRuO3 thin films studied by noise spectroscopy — •Adham Amyan, Pintu Das, Jens Brandenburg, Jens Müller, Melanie Schneider, Vasily Moshnyaga, and Philipp Gegenwart
14:00 TT 27.29 Multiple phase transitions in YbPd — •Stefanie Grünheit, Jeevan S. Hirale, Yoshifumi Tokiwa, and Philipp Gegenwart
14:00 TT 27.30 Metal-insulator transitions in layered ruthenatesJohanna Brand, •Anna Silex, Olaf J. Schumann, Michael Gottschlich, Steven Price, Navid Qureshi, Paul Steffens, Daniel Löwen, Yvan Sidis, Arsène Goukassov, Beatrice Gillon, Satoru Nakatsuji, Jason Farrell, Naoki Kikugawa, Andrew Mackenzie, Karin Schmalzl, and Markus Braden
14:00 TT 27.31 Doping dependent behaviour of potassium intercalated pentacene films: watching out for correlation effects — •Andreas Ruff, Joep Loos, Michael Sing, Jens Pflaum, and Ralph Claessen
14:00 TT 27.32 The metal-to-insulator transition in organic charge-transfer salts studied by noise spectroscopy — •Robert Rommel, Pintu Das, Adham Amyan, Jens Müller, Jens Brandenburg, and Dieter Schweitzer
14:00 TT 27.33 Pressure-induced phase transition in ZnCr2Se4 spinel — •Kaneez Rabia, Leonetta Baldassarre, Vladimir Tsurkan, and Christine Kuntscher
14:00 TT 27.34 Magnetic and electronic properties in Chromates RCrO3 and the Vanadate K2V8O16 (Hollandite) — •A. C. Komarek, M. Isobe, T. Möller, M. Hoelzel, A. Senyshyn, D. Trots, M. T. Fernandez-Diaz, T. Hansen, M. Azuma, Y. Ueda, J. Hemberger, T. Unruh, J. R. Stewart, M. Grüninger, D. I. Khomskii, and M. Braden
14:00 TT 27.35 Temperature dependent optical conductivity of RVO3 (R=Y, Gd), LaSrFeO4 and RCoO3 (R=La, Eu) studied by ellipsometry — •Julia Küppersbusch, Kostiantyn Shportko, Agung Nugroho, Thomas Palstra, Navid Qureshi, Marco Reuther, Thomas Lorenz, and Markus Grüninger
14:00 TT 27.36 LDA+DMFT study of LaCoO3 — •Evgeny Gorelov and Eva Pavarini
14:00 TT 27.37 Variational Monte Carlo study of the one-dimensional tt′ Hubbard model — •Luca F. Tocchio, Claudius Gros, and Federico Becca
14:00 TT 27.38 Spectral properties of the three-dimensional Hubbard Model — •Sebastian Fuchs, Emanuel Gull, Matthias Troyer, Mark Jarrell, and Thomas Pruschke
14:00 TT 27.39 The role of the double counting correction in the LDA+DMFT method - a systematic study. — •Michael Karolak, Tim Wehling, German Ulm, and Alexander Lichtenstein
14:00 TT 27.40 Non-linear integral equations for transfer matrices of Chalker Coddington network models — •Win Nuding and Michael Brockmann
14:00 TT 27.41 Calculating Thermodynamic Properties using Stochastic Sampling within the DMRG framework — •Stefan Kremer and Peter Schmitteckert
14:00 TT 27.42 Screening of U in a three-band Hubbard model — •Clemens Adolphs and Erik Koch
14:00 TT 27.43 Variational matrix product states for nano chains — •Andrej Schwabe and Michael Potthoff
14:00 TT 27.44 On the existence of the excitonic insulator phase in the extended Falicov-Kimball model: a vectorial slave-boson approach — •Bernd Zenker, Dieter Ihle, Franz Xaver Bronold, and Holger Fehske
14:00 TT 27.45 Structural and Magnetic Properties of Fe Obtained by Dynamical Mean-Field Theory — •Ivan Leonov, Alexander I. Poteryaev, Vladimir I. Anisimov, and Dieter Vollhardt
14:00 TT 27.46 Modified Fermi-liquid behavior of the Hubbard model at finite temperature within the dynamical mean-field theory — •Sebastian Schmitt
14:00 TT 27.47 Projected excitations in a generalized Gutzwiller approximation — •Andrea Di Ciolo and Claudius Gros
14:00 TT 27.48 Influence of Spin Fluctuation on the Single and Two Particle Properties of Two Dimensional Correlated System — •B.D Napitu and J Berakdar
14:00 TT 27.49 Perturbative theory of isosbestic points — •Markus Greger, Marcus Kollar, and Dieter Vollhardt
14:00 TT 27.50 Thermodynamic properties of the Hubbard model — •Patrick Haase, Sebastian Fuchs, Mark Jarrell, and Thomas Pruschke
14:00 TT 27.51 High-frequency tails and the decay rate of high-energy excitations in correlated systems — •Matthias Sitte and Lev Ioffe
14:00 TT 27.52 Eigenexcitation of Anderson impurity model out of equilibrium — •Pei Wang and Stefan Kehrein
14:00 TT 27.53 Non-equilibrium steady state in a periodically driven Kondo modelMarkus Heyl and •Stefan Kehrein
14:00 TT 27.54 spatiotemporal formation of the Kondo screening cloud — •Alexander Hoffmann and Stefan Kehrein
14:00 TT 27.55 Non-equilibrium magnetization dynamics of ferromagnetically coupled Kondo spins — •Andreas Hackl, Matthias Vojta, Stefan Kehrein, Walter Hofstetter, and David Roosen
14:00 TT 27.56 Scaling approach to a time-dependent Kondo model: from adiabatic switching to an interaction quench — •Constantin Tomaras and Stefan Kehrein
14:00 TT 27.57 Real-time simulations of nonequilibrium transport in the single-impurity Anderson model — •Fabian Heidrich-Meisner, Adrian Feiguin, Luis Dias Da Silva, George Martins, Carlos Bussser, Enrique Anda, and Elbio Dagotto
14:00 TT 27.58 Transport simulations in correlated one-dimensional systems — •Malcolm Einhellinger and Alex Cojuhovschi
14:00 TT 27.59 Quantum Dynamics of a spin-boson system close to a classical phase transition — •Lutz Bakemeier, Andreas Alvermann, and Holger Fehske
14:00 TT 27.60 Superperturbation solver for non-equilibrium — •Alexander Lieder, Sergej Brener, Alexander Chudnovskiy, Dmytro Grytskyy, Christoph Jung, and Alexander Lichtenstein
14:00 TT 27.61 Strongly Correlated Steady-State Transport through a Quantum Dot — •Andreas Dirks, Philipp Werner, Mark Jarell, and Thomas Pruschke
14:00 TT 27.62 Matrix product state approach for a two-lead, multi-level Anderson model — •Andreas Holzner, Andreas Weichselbaum, and Jan von Delft
14:00 TT 27.63 Coupled qubits in a dissipative environment — •Etienne Gärtner and Ralf Bulla
14:00 TT 27.64 Exact diagonalization studies of small spin clusters Kondo-coupled to one-dimensional tight-binding electrons — •Martin Höck and Jürgen Schnack
14:00 TT 27.65 Thermal expansion and magnetostriction of the spin-1/2-chain compound Cu(C4H4N2)(NO3)2 — •Jens Rohrkamp, Yvonne Sanders, Markus Garst, Matt D. Phillips, Mark M. Turnbull, and Thomas Lorenz
14:00 TT 27.66 Magnetic Properties of the quasi-2D S=1/2 Heisenberg antiferromagnet [Cu(pyz)2(HF2)]PF6 — •M. Ozerov, E. Čižmár, S.A. Zvyagin, R. Beyer, M. Uhlarz, Y. Skourski, J.L. Manson, J.A. Schlueter, and J. Wosnitza
14:00 TT 27.67 ESR Studies of the Quantum Spin Dimer System Ba3Cr2O8 — •D. Kamenskyi, J. Wosnitza, S.A. Zvyagin, J. Krzystek, A.A. Aczel, H.A. Dabkowska, and G.M. Luke
14:00 TT 27.68 Magnetic properties of epitaxially strained Sr1−xCaxRuO3 thin films — •Markus Wissinger, Dirk Fuchs, and Hilbert v. Löhneysen
14:00 TT 27.69 Spinon localization in the heat transport of the spin-1/2 ladder compound (C5H12N)2CuBr4 — •Gerhard Kolland, Jens Rohrkamp, Beni Thielemann, Henrik M. Ronnow, Christian Rüegg, Karl Krämer, John A. Mydosh, Alexandr V. Sologubenko, and Thomas Lorenz
14:00 TT 27.70 Generalized t-J models derived systematically from Hubbard models in the doped case — •Simone A. Hamerla and Götz S. Uhrig
14:00 TT 27.71 Field-induced effects near the mysterious low-temperature phase transition in the proposed spin-liquid system κ-(BEDT-TTF)2Cu2(CN)3 — •Rudra Sekhar Manna, Mariano de Souza, Andreas Brühl, John A. Schlueter, and Michael Lang
14:00 TT 27.72 Structural and magnetic properties of the mixed quantum antiferromagnet Cs2CuCl4−xBrx — •P. T. Cong, S. Belz, N. Krüger, F. Ritter, W. Aßmus, B. Wolf, and M. Lang
14:00 TT 27.73 Magnetic properties of the new low-dimensional spin magnet α-Cu2As2O7 — •Yulieth Arango, Evgenia Vavilova, Olga Volkova, Mahmoud Abdel-Hafez, Matthias Weil, Alexander Vasiliev, Vladislav Kataev, Rüdiger Klingeler, and Bernd Büchner
14:00 TT 27.74 Electron spin resonance spectroscopy of a novel Ni based hybrid S = 1 chain — •F. Lipps, A. H. Arkenbout, A. Meetsma, T. T. M. Palstra, P. H. M. van Loosdrecht, V. Kataev, and B. Büchner
14:00 TT 27.75 Hole induced spin polarons in LaCoO3 — •A. Alfonsov, E. Vavilova, V. Kataev, A. Podlesnyak, D.I. Khomskii, and B. Büchner
14:00 TT 27.76 Magnetic anisotropy in the quasi one-dimensional Ising spin-1/2 chain system BaCo2V2O8 — •Sandra Niesen, Gerhard Kolland, Martin Valldor, Oliver Heyer, and Thomas Lorenz
14:00 TT 27.77 Derivation of the effective microscopic models for the frustrated antiferromagnets Cs2CuCl4 and Cs2CuBr4 from first principles — •Kateryna Foyevtsova, Ingo Opahle, Harald Jeschke, and Roser Valenti
14:00 TT 27.78 DMRG Study of Anisotropic Triangular Heisenberg Lattice — •Andreas Weichselbaum and Steven R. White
14:00 TT 27.79 DMRG calculations for S=1 anisotropic Heisenberg antiferromagnetic chains — •David Peters, Ian P. McCulloch, and Walter Selke
14:00 TT 27.80 Dynamics of magnetic impurities in two-dimensional spin-1/2 antiferromagnets — •Björn Willenberg and Wolfram Brenig
14:00 TT 27.81 Vacancies in non-collinear antiferromagnets — •Alexander Wollny, Lars Fritz, and Matthias Vojta
14:00 TT 27.82 Manipulating magnetic structures in chiral metals by currents — •Karin Everschor, Markus Garst, Rembert Duine, and Achim Rosch
14:00 TT 27.83 Ground state phases of the spin-1/2 J1J2J3 Heisenberg antiferromagnet on the square lattice — •Rachid Darradi, Johannes Reuther, Wolfram Brenig, Johannes Richter, and Peter Wölfle
14:00 TT 27.84 Consistent description of magnetic excitations and phase diagram of high-Tc cuprates within a strong-coupling approachSascha Brehm, •Enrico Arrigoni, Markus Aichhorn, and Werner Hanke
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DPG-Physik > DPG-Verhandlungen > 2010 > Regensburg