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TT: Fachverband Tiefe Temperaturen

TT 44: Poster Session Correlated Electrons

Thursday, March 17, 2011, 10:00–13:00, P1

10:00 TT 44.1 NRG calculations of the magnetization of Kondo impurities in an external field — •Martin Höck and Jürgen Schnack
10:00 TT 44.2 Real-space Kondo correlations — •Michael Becker, Andrew Mitchell, and Ralf Bulla
10:00 TT 44.3 Coupled Spins in a Dissipative Environment — •Etienne Gärtner, Andrew Mitchell, and Ralf Bulla
10:00 TT 44.4 Kondo physics with variational matrix-product states — •Andrej Schwabe and Michael Potthoff
10:00 TT 44.5 Kondo effect in single wall carbon nanotubes with ferromagnetic contactsMarkus Gaass, •Daniel Steininger, Andreas K. Hüttel, Kicheon Kang, Ireneusz Weymann, Jan von Delft, and Christoph Strunk
10:00 TT 44.6 Superconductivity in the Kondo lattice model — •Oliver Bodensiek, Rok Žitko, and Thomas Pruschke
10:00 TT 44.7 Magnetic phase transitions in CePdAl — •S. Woitschach, O. Stockert, V. Fritsch, N. Bagrets, H. v. Löhneysen, and F. Steglich
10:00 TT 44.8 Investigating the large degeneracy Kondo lattice metamagnet CeTiGe: Crystal growth and doping studies — •T. Gruner, N. Caroca-Canales, J. Sereni, M. Deppe, and C. Geibel
10:00 TT 44.9 CeCo(As/P)O pnictides: complex interplay of 4f and 3d magnetism as seen from NMR (31P, 59Co and 75As). — •Michael Baenitz, Rajib Sarkar, Eva Brünining, Asok Poddar, Chandan Majumdar, Anton Jesche, Cornelius Krellner, Cristoph Geibel, and Frank Steglich
10:00 TT 44.10 Magnetic properties of CeTPO (T = Co,Ru,Os) phosphides studied by muon spin relaxation — •Johannes Spehling, Cornelius Krellner, Hubertus Luetkens, Til Dellmann, Anton Jesche, Christoph Geibel, and Hans-Henning Klauss
10:00 TT 44.11 27Al NMR/NQR study on RRu2Al10 (R: La, Ce) and RFe2Al10 (R: Y, Yb). — •Panchanana Khuntia, Michael Baenitz, Rajib Sarkar, André Strydom, and Frank Steglich
10:00 TT 44.12 Exotic Heavy-Fermion Behaviour of the Filled Skutterudite SmPt4Ge12 — •Roman Gumeniuk, Walter Schnelle, Michael Nicklas, Helge Rosner, Michael Schöneich, and Andreas Leithe-Jasper
10:00 TT 44.13 Tuning the magnetism in YbRh2Si2 via isoelectronic transition metal (Co, Ir) substitutions: a 59Co- and 29Si-NMR study — •Michael Baenitz, Cornelius Krellner, Panchanana Khuntia, Christoph Geibel, and Frank Steglich
10:00 TT 44.14 Magnetism and valence fluctuations in Eu(Rh1−xIrx)2Si2 single crystals — •Silvia Seiro and Christoph Geibel
10:00 TT 44.15 Magnetic excitations in YbCo2Si2 — •O. Stockert, A. Haase, K. Schmalzl, C. Krellner, N. Mufti, and C. Geibel
10:00 TT 44.16 Phase diagram of CePt3B1−xSix — •Daniela Rauch, Matthias Bleckmann, Stefan Süllow, Moo Sung Kim, Meigan Aronson, and Ernst Bauer
10:00 TT 44.17 Exotic field induced phases in UPt2Si2 — •D. Schulze Grachtrup, M. Bleckmann, B. Willenberg, H. Rakoto, I. Sheikin, Y. Skourski, M. Bartkowiak, J.A. Mydosh, and S. Süllow
10:00 TT 44.18 Dynamics of the Periodic Anderson Model: exhaustion effects and the interplay of scales — •Lucas Hollender, Andrew Mitchell, and Ralf Bulla
10:00 TT 44.19 Quantum Phase Transition between Semimetal and Superfluid in a Dirac Cone Model — •Benjamin Obert, Philipp Strack, So Takei und Walter Metzner
10:00 TT 44.20 Quantum critical dynamics in the one-dimensional spin chain systems CuPzN and (phzH)2CuCl4 — •H. Kühne, M. Günther, H.-H. Klauss, A.A. Zvyagin, J. Litterst, S. Grossjohann, W. Brenig, A.P. Reyes, P.L. Kuhns, C.P. Landee, and M.M. Turnbull
10:00 TT 44.21 Accurate Determination of the Gauss-Transition in the Anisotropic Spin-One Chain — •Shijie Hu, Bruce Normand, and Xiaoqun Wang
10:00 TT 44.22 Relation between crystal structure, magnetism and electronic properties in layered ruthenates — •Johanna Brand, Anna Silex, Karsten Binder, Yvan Sidis, Arsen Gukasov, Beatrice Gillon, Satoru Nakatsuji, Naoki Kikugawa, Andrew Mackenzie, Fumihiko Nakamura, and Markus Braden
10:00 TT 44.23 Low-frequency optics on Sr1−xCaxRuO3 — •Diana Geiger, Marc Scheffler, Martin Dressel, Melanie Schneider, and Philipp Gegenwart
10:00 TT 44.24 Ferromagnetic quantum phase transition in Sr1−xCaxRuO3 thin films — •Melanie Schneider, Vasile Mosneaga, and Philipp Gegenwart
10:00 TT 44.25 Quantum criticality in Sr3Ru2O7 studied by measurements of the magnetocaloric effect — •Manuel Mchalwat, Yoshi Tokiwa, R.S. Perry, Y. Maeno, and Philipp Gegenwart
10:00 TT 44.26 Low-temperature electrical resistivity of Yb(Rh0.95Fe0.05)2Si2 — •Maik Schubert, H.S. Jeevan, Yoshi Tokiwa, and Philipp Gegenwart
10:00 TT 44.27 Structural and magnetic transitions in YbPd — •Stefanie Grünheit, Hirale S. Jeevan, Devashibhai T. Adroja, Yoshifumi Tokiwa, Christian Stingl, Aziz Daoud-Aladine, and Philipp Gegenwart
10:00 TT 44.28 31 P NMR study on Eu(Ni1−xFex)2P2: from valence fluctuations to ferromagnetic order — •Michael Baenitz, Ramesh Nath, Rajib Sarkar, Hirale Jeevan, Philipp Gegenwart, Zarkir Hossain, Nubia Caroca-Canales, Christoph Geibel, and Frank Steglich
10:00 TT 44.29 Grüneisen ratios at the magnetic-field-induced quantum phase transition in NiCl2-4SC(NH2)2 — •Manuel Brando, Robert Kuechler, Luis Pedrero, Alexander Steppke, Armando Paduan-Filho, Christian Batista, Franziska Weickert, Vivien Zapf, Marcelo Jaime, and Frank Steglich
10:00 TT 44.30 Field and concentration dependent scaling behavior of the thermal expansion near the quantum critical point of CeCu6−xAux — •Sebastian Zaum, Kai Grube, Roland Schäfer, Veronika Fritsch, Thomas Wolf, Peter Schweiss, and Hilbert von Löhneysen
10:00 TT 44.31 Thermal expansion and magnetostriction of Yb2Fe12P7 single crystals — •Kai Grube, Sebastian Zaum, Roland Schäfer, Peter Schweiss, R. E. Baumbach, M. B. Maple, and Hilbert von Löhneysen
10:00 TT 44.32 flow equations approach to one dimensional quantum Ising model — •Amin Kiani, Farhad Shahbazi, and Seyed Akbar Jafari
10:00 TT 44.33 Broadband dielectric spectroscopy on multiferroic compounds — •Daniel Niermann, Max Schalenbach, Christoph Grams, Florian Waschkowski, and Joachim Hemberger
10:00 TT 44.34 Phase diagram of NaFe(WO4)2 — •Yvonne Sanders, Stephanie Orbe, Oliver Heyer, Sven Jodlauk, Sebastian Albiez, Petra Becker, Ladislav Bohatý, and Thomas Lorenz
10:00 TT 44.35 Evidence for local lattice distortions in giant magnetocapacitive CdCr2S4Vladimir Gnezdilov, •Peter Lemmens, Yurii Pashkevich, Alois Loidl, and Vladimir Tsurkan
10:00 TT 44.36 Tunnel-spectroscopy of tunable granular metals prepared by focused electron beam induced deposition — •Dirk Klingenberger, Fabrizio Porrati, and Michael Huth
10:00 TT 44.37 Exploring the doping dependence of the Mott transition on X-ray irradiated crystals of κ-(ET)2Cu[N(CN)2]Cl — •Sebastian Köhler, Ulrich Tutsch, Ammar Naji, Takahiko Sasaki, and Michael Lang
10:00 TT 44.38 Correlated heterostructures with dynamical mean field theory — •Christoph Schütte and Achim Rosch
10:00 TT 44.39 Stripline-based resonant microwave spectroscopy to study interacting electron systems — •Christian Fella, Marc Scheffler, and Martin Dressel
10:00 TT 44.40 Infrared properties of magnetite under pressure — •Jihaan Ebad-Allah, Leonetta Baldassarre, Michael Sing, Ralph Claessen, Vic Brabers, and Christine Kuntscher
10:00 TT 44.41 On the development of orbital order domains across the Verwey transition in magnetite — •M. Döhler, C. F. Chang, M. Buchholz, C. Trabant, T. Kachel, N. Pontius, M. Beye, F. Sorgenfrei, W. Schlotter, S. de Jong, R. Kukreja, B. Bräuer, S. Hossain, C. Back, A. Scherz, D. Zhu, J. Turner, W.-S. Lee, Y.-D. Chuang, O. Krupin, P. Vogt, W. Wurth, A. Föhlisch, J. B. Goedkoop, H. A. Dürr, and C. Schüßler-Langeheine
10:00 TT 44.42 Orbital occupation and magnetic moments of tetrahedrally coordinated iron in CaBaFe4O7 — •Nils Hollmann, Zhiwei Hu, Hua Wu, Martin Valldor, Navid Qureshi, Thomas Willers, Yi-Ying Chin, Julio Criginski Cezar, Arata Tanaka, Nicholas Brookes, and Liu Hao Tjeng
10:00 TT 44.43 Charge, orbital and spin ordering in 214- manganites, nickelates and cuprates investigated by neutron and x-ray scattering — •A. Bielefeld, H. Ulbrich, D. Senff, A. C. Komarek, P. Steffens, Y. Sidis, and M. Braden
10:00 TT 44.44 Temperature-dependent near-edge x-ray absorption fine structure of (La1−yPry)0.7Ca0.3MnO3 — •Stephan Uebe, Andrea Assmann, Michael Merz, Markus Wissinger, Hilbert von Löhneysen, Sebastian Hühn, Vasily Moshnyaga, Peter Nagel, and Stefan Schuppler
10:00 TT 44.45 On the coupling of spin and charge order in the stripe phase of layered nickelates — •Pascal Vogt, Christoph Trabant, Marcel Buchholz, Chun-Fu Chang, Niko Pontius, Marita Döhler, Enrico Schierle, Justina Schlappa, Agung Nugroho, Mohamed Benomar, Alexander Komarek, Ralf Feyerherm, Liu Hao Tjeng, Markus Braden, and Christian Schüßler-Langeheine
10:00 TT 44.46 Investigation of the Electronic Structure and the Role of Cationic Disorder in LaAlO3 - SrTiO3 Heterointerfaces by Soft X-ray Spectroscopy — •Andreas Koitzsch, Johannes Ocker, Martin Knupfer, Martina Dekker, Kathrin Dörr, Bernd Büchner, and Patrick Hoffmann
10:00 TT 44.47 Design and realization of a torque magnetometer for magnetization studies on LaAlO3-SrTiO3 interfaces — •Matthias Brasse, Marc A. Wilde, and Dirk Grundler
10:00 TT 44.48 Thermal conductivity of BaCo2V2O8 — •Gerhard Kolland, Sandra Niesen, Martin Valldor, and Thomas Lorenz
10:00 TT 44.49 Synthesis and characterization of low dimensional magnetic spin systems — •Johanna Frielingsdorf, Ralf Müller, Simon Scharffe, Martin Valldor, and Thomas Lorenz
10:00 TT 44.50 Thermodynamic properties of the XY-spin-1/2 chain system Cs2CoCl4 — •Oliver Breunig, Daniel Löwen, Ralf Müller, Oliver Heyer, and Thomas Lorenz
10:00 TT 44.51 Strong Electron Correlations in a Two-Dimensional Electron System on a Surface — •Philipp Höpfner, Jörg Schäfer, Thomas Schramm, Max Herpich, Gang Li, Werner Hanke, and Ralph Claessen
10:00 TT 44.52 Thermal expansion under pressure - test measurements on Azurite [Cu3(CO3)2(OH)2] — •Rudra Sekhar Manna and Michael Lang
10:00 TT 44.53 Investigatons of modified interlayer coupling in the anisotropic antiferromangnet [Cu(pyz)2(HF2)]SbF6 — •R. Beyer, J.L. Manson, J.A. Schlueter, and J. Wosnitza
10:00 TT 44.54 Doping dependence of collective spin states in LaCoO3 — •A. Alfonsov, E. Vavilova, V. Kataev, A. Podlesnyak, E. Pomjakushina, and B. Büchner
10:00 TT 44.55 On the influence of inter-chain couplings on the magnetic properties of the strongly frustrated chain cuprate Li2CuO2 — •W.E.A. Lorenz, S.-L. Drechsler, R.O. Kuzian, S. Nishimoto, S. Petit, Y. Skourski, N. Wizent, R. Klingeler, and B. Büchner
10:00 TT 44.56 Magnetic and Thermal properties of a Honeycomb lattice system Li2IrO3 — •Soham Manni, Yogesh Singh, and Philipp Gegenwart
10:00 TT 44.57 Quasi-1D Transport Measurements on (TMTTF)2X under Hydrostatic Pressure — •Karl Schrem, Eva Rose, Gabi Untereiner, and Martin Dressel
10:00 TT 44.58 Doping effects on the non-linear transport in blue bronze — •Ali Al-Hadeethi, Duminik Grund, Song Yue, Martin Dressel, and Christine Kuntscher
10:00 TT 44.59 Quantitative measurement of low temperature magnetisation by a caloric technique — •Hanjo Ryll, Klaus Kiefer, Christian Rüegg, Simon Ward, Karl Krämer, and Tobias Müller
10:00 TT 44.60 Tensor network states for lattice systems — •Stefan Depenbrock and Ulrich Schollwöck
10:00 TT 44.61 Strong correlations in spinful quantum wires with multiple dynamics — •Tobias Meng, Mehul Dixit, Julia Meyer, and Markus Garst
10:00 TT 44.62 Properties of dimerized n-leg spin 1/2 ladders — •Kris Cöster and Kai Phillip Schmidt
10:00 TT 44.63 Finite-size scaling analysis of the frustrated square-lattice Heisenberg model — •Burkhard Schmidt, Mohammad Siahatgar, and Peter Thalmeier
10:00 TT 44.64 Time-dependent exact diagonalization for the simulation of RIXS in 1-D systems — •Stefanos Kourtis, Maria Daghofer, and Jeroen van den Brink
10:00 TT 44.65 Transport simulations in quasi-one-dimensional correlated quantum systems — •Alex Cojuhovschi, Malcolm Einhellinger, Eric Jeckelmann, Sabine Tornow, and Gertrud Zwicknagl
10:00 TT 44.66 Quantum relaxation in the XY chain with free boundaries — •Benjamin Blaß and Heiko Rieger
10:00 TT 44.67 Band renormalization for systems on anisotropic triangular lattices — •Andrea Di Ciolo, Luca F. Tocchio, and Claudius Gros
10:00 TT 44.68 Response of Jahn-Teller inhomogeneities to uniaxial strain. — •Joaquin Miranda Mena
10:00 TT 44.69 Functional RG for spin chainsKimmo Sääskilahti, •Stefan Göttel, Dirk Schuricht, Sabine Andergassen, and Carsten Honerkamp
10:00 TT 44.70 Quantum phase transitions in anisotropic Heisenberg antiferromagnetic chains — •David Peters
10:00 TT 44.71 Magnetic susceptibility and spin-wave properties of two-band Hubbard models — •Ernst von Oelsen, Jörg Bünemann, and Götz Seibold
10:00 TT 44.72 Investigation of giant spin rings with DMRG — •Jörg Ummethum and Jürgen Schnack
10:00 TT 44.73 Factorization of time-dependent correlation functions for the central spin model — •Fabian Güttge, Jasmin V. Jäger, and Frithjof B. Anders
10:00 TT 44.74 Thermal relaxation and heat transport in spin ice Dy2Ti2O7 — •Bastian Klemke, M. Meissner, P. Strehlow, K. Kiefer, S. A. Grigera, and D. A. Tennant
10:00 TT 44.75 Collective orbital excitations in GdVO3 — •Michael Voigt, Luis Mäder, Konstantin Shportko, Graeme R. Blake, Nandang Mufti, Agustinus A. Nugroho, Thomas T. M. Palstra, and Markus Grüninger
10:00 TT 44.76 Looking for orbiton dispersion features in GdVO3 with the aim of RIXS — •Pasquale Marra, Krzysztof Wohlfeld, Jeroen van den Brink, Luis Maeder, Komalavalli Thirunavukkuarasu, Marco Moretti Sala, Giacomo Ghiringhelli, Thorsten Schmitt, and Marcus Grueninger
10:00 TT 44.77 Spin excitations in the antiferromagnetic and antiferroquadrupolar phase of CeB6 — •G. Friemel, Y. Li, A. Invanov, V. B. Filipov, N. Yu. Shitsevalova, N. E. Sluchanko, and D. S. Inosov
10:00 TT 44.78 Low temperature thermal and electrical transport properties of ZrZn2 in high magnetic field — •Yang Zou, Mike Sutherland, Stephen Hayden, Daniel Rothfuß, Andreas Fleischmann, F. Malte Grosche, and Christian Enss
10:00 TT 44.79 Low temperature spin excitation spectrum of FeSi by polarized neutron spectroscopy — •Sven Krannich, Yvan Sidis, Jean-Michel Mignot, Daniel Lamago, Frank Weber, Alexander Ivanov, and Paul Steffens
10:00 TT 44.80 Dynamic triple-helix spin clusters in the paramagnetic phase of MnSi — •A. Hamann, D. Lamago, Th. Wolf, H. v. Löhneysen, and D. Reznik
10:00 TT 44.81 Polarized electron currents in the helical magnet MnSi — •Pascal Krautscheid, Karin Everschor, Markus Garst, and Achim Rosch
10:00 TT 44.82 Entanglement spectrum analysis of frustrated Heisenberg antiferromagnets — •Burkhard Scharfenberger, Ronny Thomale, and Martin Greiter
10:00 TT 44.83 (contribution withdrawn) Quantum Phases of the Planar Antiferromagnetic J1-J2-J3 Heisenberg-Model — •Rachid Darradi, Johannes Reuther, Peter Wölfle, Wolfram Brenig, Marcelo Arlego, and Johannes Richte
10:00 TT 44.84 Generalized Magnetic Impurities in Low-Dimensional Quantum Antiferromagnets — •Björn Willenberg, Wolfram Brenig, Holger Frahm, and Eric Jeckelmann
10:00 TT 44.85 Wien2wannier: From linearized augmented plane waves to maximally localized Wannier functionsPhilipp Wissgott, Jan Kuneš, •Alessandro Toschi, Ryotaro Arita, and Karsten Held
10:00 TT 44.86 Optimized basis in continuous unitary transformations for symmetry-broken groundstates — •Nils A. Drescher and Götz S. Uhrig
10:00 TT 44.87 Charge self-consistency in an LDA+DMFT framework — •Daniel Grieger, Oleg Peil, and Frank Lechermann
10:00 TT 44.88 Compression of matrix-product states — •Michael Lee and Michael Potthoff
10:00 TT 44.89 Dual-Fermion approach to Non-equilibrium strongly correlated problems — •Alexander Lieder, Christoph Jung, Sergej Brener, Alexander Chudnovskiy, and Alexander Lichtenstein
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