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Berlin 2012 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 33: Superconductivity, Measuring Devices, Matter at Low Temperature: Poster Session

Mittwoch, 28. März 2012, 15:00–19:00, Poster B

15:00 TT 33.1 Magnetic investigations on EuFe2(As1−xPx)2 single crystals — •Felix Klingert, Sina Zapf, Dan Wu, Shuai Jiang, Hirale S. Jeevan, Philipp Gegenwart, and Martin Dressel
15:00 TT 33.2 Temperature dependent ellipsometric Studies on Iron-Pnictides — •Mathias Eichler, Dan Wu, Bruno Gompf, and Martin Dressel
15:00 TT 33.3 Isovalent substitution on the iron site in pnictides - an optical study — •Daniel Pröpper, Aliaksei Charnukha, Ma Jin Eom, Jun Sung Kim, Bernhard Keimer, and Alexander Boris
15:00 TT 33.4 Evidence for vortex lattice melting in Ba1−xKxFe2As2 seen by thermal expansion — •Philipp Burger, Anna Böhmer, Frédéric Hardy, Peter Adelmann, Doris Ernst, Rainer Fromknecht, Peter Schweiss, Thomas Wolf, Hilbert von Löhneysen, and Christoph Meingast
15:00 TT 33.5 Thermal expansion and magnetostriction studies on Fe-based pnictides — •Christopher Dietl, Norman Leps, Liran Wang, Ulrike Stockert, Luminita Harnagea, Sabine Wurmehl, Bernd Büchner, and Rüdiger Klingeler
15:00 TT 33.6 Coherent excitations and e-ph coupling in 122 FeAs compounds investigated by time-resolved ARPES — •I. Avigo, R. Cortés, L. Rettig, S. Thirupathaiah, H. S. Jeevan, P. Gegenwart, T. Wolf, M. Ligges, M. Wolf, J. Fink, and U. Bovensiepen
15:00 TT 33.7 Three-dimiensional Fermi surface of Iron-pnictide superconductor Ba1−xKxFe2As2 — •Masaki Kobayashi, Vladimir N. Strocov, Elia Razzoli, Ming Shi, Thorsten Schmitt, Xiaoping Wang, Yaobo Huang, Hong Ding, Masaharu Oshima, and Luc Patthey
15:00 TT 33.8 Pinning in CaFe2−xCoxAs2 and Ba(Fe1−xCox)2As2 single crystals as studied by MWA — •Nadezda Panarina, Niyaz Beysengulov, Yuri Talanov, Tatyana Shaposhnikova, Evgenia Vavilova, Luminita Harnagea, Saicharan Aswartham, Claudia Nacke, Sabine Wurmehl, Christian Hess, Vladislav Kataev, and Bernd Büchner
15:00 TT 33.9 In-plane/out-of-plane resistivity anisotropy of Co-doped BaFe2As2 — •Oleksii Vakaliuk, Manoj Kumar, Saicharan Aswartham, Sabine Wurmehl, Christian Hess, and Bernd Büchner
15:00 TT 33.10 Systematic NMR/NQR investigation of the local charge environment in iron pnictides — •Uwe Gräfe, Eva-Maria Brüning, Guillaume Lang, Louis Veyrat, Seung-Ho Baek, Hans-Joachim Grafe, Dalibor Paar, Franziska Hammerath, Katarina Manthey, Günther Behr, Jochen Werner, Sabine Wurmehl, and Bernd Büchner
15:00 TT 33.11 Superconducting LiFeAs as seen by Scanning Tunneling Microscopy/Spectroscopy — •Rico Pohle, Martha Scheffler, Ronny Schlegel, Torben Hänke, Danny Baumann, Anne Bachmann, Dirk Bombor, Steffen Sykora, Luminita Harnagea, Sabine Wurmehl, Christian Hess, and Bernd Büchner
15:00 TT 33.12 Electronic Transport Properties of LiFeAs and Transition Metal doped LiFeAs in comparison to doped and undoped NaFeAs — •Dirk Bombor, Anne Bachmann, Luminita Harnagea, Claudia Nacke, Saicharan Aswaratham, Igor Morozov, Maria Roslowa, Sabine Wurmehl, Christian Hess, and Bernd Büchner
15:00 TT 33.13 Superconductivity in LiFeAs — •Johanna Brand, Sabine Wurmehl, Bernd Büchner, Anne Stunault, and Markus Braden
15:00 TT 33.14 Gutzwiller theory of band magnetism in LaOFeAs — •Tobias Schickling, Florian Gebhard, Jörg Bünemann, Lilia Boeri, Ole K. Andersen, and Werner Weber
15:00 TT 33.15 Preemptive Nematic Order, Pseudogap, and Orbital Order in the Iron Pnictides — •Johannes Knolle, Ilya Eremin, Rafael M. Fernandes, Andrey V. Chubukov, and Jorg Schmalian
15:00 TT 33.16 Quasiparticle properties in iron arsenides — •Guido Klingschat and Carsten Honerkamp
15:00 TT 33.17 Ultrafast non-equilibrium dynamics in SDW metals — •Bhaskar Kamble, Alireza Akbari, and Ilya Eremin
15:00 TT 33.18 Robustness of surface states in noncentrosymmetric superconductors — •Raquel Queiroz and Andreas Schnyder
15:00 TT 33.19 Mössbauer investigation of magnetic and structural phase transitions in Fe1+xTe — •Philipp Materne, Cevriye Coz, Sahana Rössler, Ulrich K. Rössler, Mathias Doerr, Steffen Wirth, Ulrich Schwarz, Til Goltz, and Hans-Henning Klauß
15:00 TT 33.20 Noise spectroscopy of superconducting systems δ-FeSe and FeSe0.5Te0.5 — •Adham Amyan, Amir-Abbas Haghighirad, Pintu Das, Sahana Rößler, Steffen Wirth, Dona Cherian, Suja Elizabeth, Wolf Aßmus, and Jens Müller
15:00 TT 33.21 Superconductor-insulator transition in disordered FeSe thin films — •Rudolf Schneider, Alexander G. Zaitsev, and Dirk Fuchs
15:00 TT 33.22 Superconducting oyxpnictide thin films — •Andreas Reisner, Martin Kidszun, Thomas Thersleff, Elke Reich, Bernhard Holzapfel, Ludwig Schultz, and Silvia Haindl
15:00 TT 33.23 Unusual flux jumps in MgB2 thin films — •Sebastian Treiber, Claudia Stahl, and Joachim Albrecht
15:00 TT 33.24 Two concepts of introducing thin-film superconductivity in Ge and Si by use of Ga-ion implantation — •Richard Skrotzki, Thomas Herrmannsdörfer, Jan Fiedler, Viton Heera, Matthias Voelskow, Arndt Mücklich, Bernd Schmidt, Wolfgang Skorupa, Manfred Helm, and Joachim Wosnitza
15:00 TT 33.25 Synthesis, structural characterization and superconductivity in La2Sb — •Stephan Knöner, Elena Gati, Markus Kuhnt, Mariano de Souza, Amir Haghighirad, Wolf Aßmus, and Michael Lang
15:00 TT 33.26 High-field and low-temperature study of the nanostructured ferromagnetic superconductor Bi3Ni — •Thomas Herrmannsdörfer, Richard Skrotzki, Rico Schönemann, Iurii Scurschii, Jochen Wosnitza, Daniel Köhler, Regine Boldt, and Michael Ruck
15:00 TT 33.27 Fermi-surface change in Yb-doped CeCoIn5 — •A. Polyakov, O. Ignatchik, B. Bergk, A.D. Bianchi, S. Blackburn, B. Prevost, M. Cote, G. Seyfarth, D. Hurt, Z. Fisk, R.G. Goodrich, M. Richter, I. Sheikin, and J. Wosnitza
15:00 TT 33.28 Unconventional strain dependence of superconductivity in Sr2RuO4 — •Sebastian Zaum, Kai Grube, Roland Schäfer, Florian Hübler, Christoph Meingast, Yoshiteru Maeno, and Hilbert v. Löhneysen
15:00 TT 33.29 Berry curvature and orbital magnetization of the triplet superconductor Sr2RuO4 — •Martin Gradhad, James F. Annett, and Balazs L. Györffy
15:00 TT 33.30 Direct observation of the superconducting energy-gap opening in the optical conductivity spectra of LuNi2B2C — •Theo Fischer, A. V. Pronin, D. Stehr, J. Wosnitza, T. Niemeier, and B. Holzapfel
15:00 TT 33.31 Fluctuation conductivity in small superconducting cylinders — •Brian Tarasinski and Georg Schwiete
15:00 TT 33.32 Anisotropic magneto-transport in a Bi-2201 high-Tc superconductor — •Thorsten Jacobs, Sven-Olof Katterwe, Andreas Rydh, Holger Motzkau, Toni Helm, Mark V. Kartsovnik, Andrey Maljuk, Erik Kampert, Frederik Wolff-Fabris, and Vladimir M. Krasnov
15:00 TT 33.33 Asymmetric resistive switching in Bi2Sr2CaCu2O8+x single crystals — •Holger Motzkau, Thorsten Jacobs, Sven-Olof Katterwe, Andreas Rydh, and Vladimir M. Krasnov
15:00 TT 33.34 Polarization dependence of (Bi,Pb)-2201 and (Bi,Pb)-2212 low energy excitations by variable polarization ARPES — •Peter Hlawenka, Robin Weyrich, Aliakbar Ghafari, Christoph Janowitz, Helmut Dwelk, Alica Krapf, and Recardo Manzke
15:00 TT 33.35 Momentum-dependend quasiparticle relaxation dynamics in Bi2212 investigated by trARPES above and below Tc — •S. Freutel, R. Cortés, L. Rettig, Y. Yoshida, H. Eisaki, M. Ligges, M. Wolf, and U. Bovensiepen
15:00 TT 33.36 Correlated heterostructures with dynamical mean field theory — •Christoph Schütte and Achim Rosch
15:00 TT 33.37 Charge carrier density at the (Na/K)TaO3/SrTiO3 interfaces — •Udo Schwingenschlögl and Safdar Nazir
15:00 TT 33.38 Preparation and characterization of LaAlO3/SrTiO3 heterostructures — •Ahmed Sleem, Dirk Fuchs, Rudolf Schneider, and Hilbert von Löhneysen
15:00 TT 33.39 Torque magnetometry on SrTiO3-LaAlO3 heterostructures — •Matthias Brasse, Rainer Jany, Marc A. Wilde, and Dirk Grundler
15:00 TT 33.40 Thin film YBa2Cu3O7 junctions with La2/3Ca1/3MnO3 barrier — •Matthias Hepting, Andreas Stöhr, Robert Werner, Reinhold Kleiner, and Dieter Koelle
15:00 TT 33.41 YBa2Cu3O7 nanoSQUIDs for detection of small spin systems — •Tobias Schwarz, Joachim Nagel, Roman Wölbing, Matthias Kemmler, Siegfried Menzel, Reinhold Kleiner, and Dieter Koelle
15:00 TT 33.42 Wachstumsbedingungen und Eigenschaften von YBCO-Schichten mit Au-Nano Partikeln — •Markus Westerhausen, Christian Katzer, Romina Diener, Ingo Uschmann, Frank Schmidl, Markus Rettenmayr und Paul Seidel
15:00 TT 33.43 Grain boundary high-Tc dc-SQUIDs with self-organized nanocrystals — •Stefanie Koch, Peter Michalowski, Christian Katzer, Markus Westerhausen, Frank Schmidl, and Paul Seidel
15:00 TT 33.44 Characterization of directly coupled YBa2Cu3O7−x SQUID magnetometers — •Alexander Guillaume, Verena Beister, Jan M. Scholtyssek, Frank Ludwig und Meinhard Schilling
15:00 TT 33.45 Cooper pair and quasiparticle transport in Josephson junction chains — •Roland Schäfer, Andreas Fiebig, Birgit Kießig, Hannes Rotzinger, and Alexey V. Ustinov
15:00 TT 33.46 Fabrication of Flux Qubits and Resonators for their Dispersive Readout — •Anastasia V. Shcherbakova, Kirill G. Fedorov, Roland Schäfer, and Alexey V. Ustinov
15:00 TT 33.47 Influence of mechanical strain on coherent atomic tunneling systems investigated by Josephson phase qubits — •Torben Peichl, Grigorij J. Grabovskij, Jürgen Lisenfeld, Georg Weiss, and Alexey V. Ustinov
15:00 TT 33.48 Comparing coherence time of Josephson junction phase qubits made of different materials — •Kirill Lakhmanskiy, Jürgen Lisenfeld, and Alexey V. Ustinov
15:00 TT 33.49 Charge transport through 1D arrays of small capacitance Josephson junctions — •Jochen Zimmer, Andreas Fiebig, Roland Schäfer, Hannes Rotzinger, and Alexey V. Ustinov
15:00 TT 33.50 Supercurrent in Nb/Au-nanowire/Nb Josephson junctions — •Nick Borgwardt, Yusuf H. Günel, Huijun Yao, Gregor Panaitov, Detlev Grützmacher, and Thomas Schäpers
15:00 TT 33.51 Mesoscopic conductance and critical current fluctuations in Nb/InAs-nanowire/Nb Josephson JunctionsYusuf H. Günel, •Igor Batov, Hilde Hardtdegen, Kamil Sladek, Andreas Winden, Karl Weis, Gregor Panaitov, Detlev Grützmacher, and Thomas Schäpers
15:00 TT 33.52 Kritische Stromdichte von Josephson-Kontakten mit NbSi-Barriere in Abhängigkeit von Temperatur, Magnetfeld und Zusammensetzung — •Thomas Scheller, Müller Franz, Wendisch Rüdiger, Kieler Oliver, Störr Kathrin, Weimann Thomas, Egeling Bert und Kohlmann Johannes
15:00 TT 33.53 Nb/HfTi/Nb nanoSQUIDs with optimized spin sensitivity — •Matthias Rudolph, Roman Wölbing, Joachim Nagel, Matthias Kemmler, Reinhold Kleiner, Dieter Koelle, Oliver Kieler, Thomas Weimann, Johannes Kohlmann, and Alexander Zorin
15:00 TT 33.54 Nonequilibrium Josephson and quasi-particle currents through hybrid superconductor-quantum dot devices — •Sascha Ratz and Milena Grifoni
15:00 TT 33.55 Transport through Andreev bound states in a triplet superconductor - ferromagnet - singlet superconductor Josephson junction — •Wei Chen, Philip M. R. Brydon, Yasuhiro Asano, and Dirk Manske
15:00 TT 33.56 Proximity effects at the interface between chiral p-wave superconductors and ferromagnets — •Damien Terrade, Mario Cuoco, Paola Gentile, and Dirk Manske
15:00 TT 33.57 Josephson-like spin current in junctions composed of antiferromagnets and ferromagnets — •Andreas Moor, Anatoly Volkov, and Konstantin Efetov
15:00 TT 33.58 AC Josephson current through quantum dots — •Bastian Hiltscher, Michele Governale, and Jürgen König
15:00 TT 33.59 Influence of finite superconducting gaps on the proximity effect in interacting quantum dots — •David Futterer, Jacek Swiebodzinski, Michele Governale, and Jürgen König
15:00 TT 33.60 Josephson current through a quantum dot coupled to a nanomagnet — •Pascal Stadler, Cecilia Holmqvist, and Wolfgang Belzig
15:00 TT 33.61 Multiply gapped density of states in a normal metal in contact with a superconductor — •Johannes Reutlinger, Yuli V. Nazarov, Leonid I. Glazman, and Wolfgang Belzig
15:00 TT 33.62 Long-range spin transport in superconductors — •Detlef Beckmann, Florian Hübler, Michael J. Wolf, and Hilbert von Löhneysen
15:00 TT 33.63 Proximity effect between a ferromagnetic insulator and a superconductor — •Michael J. Wolf, Florian Hübler, Christoph Sürgers, Detlef Beckmann, and Hilbert v. Löhneysen
15:00 TT 33.64 Ferromagnet/superconductor hybrids with out-of-plane magnetization: comparison of current-in-plane and current-out-of-plane measurements — •Richard Montbrun, Christoph Sürgers, and Hilbert v. Löhneysen
15:00 TT 33.65 Long-range triplet pairing in superconductor-ferromagnet proximity effect heterostructures — •V. Zdravkov, J. Kehrle, G. Obermeier, D. Lenk, H.-A. Krug von Nidda, C. Müller, M.Yu. Kupriyanov, A.S. Sidorenko, S. Horn, R. Tidecks, and L.R. Tagirov
15:00 TT 33.66 Development of a large-area detector for position and energy resolving detection of molecular fragments — •Alexandra Kampkötter, Andreas Fleischmann, Loredana Gastaldo, Sebastian Kempf, Andreas Pabinger, Christian Pies, Sönke Schäfer, Thomas Wolf, and Christian Enss
15:00 TT 33.67 Low temperature particle detectors with magnetic penetration thermometers — •N. Foerster, D. Hengstler, A. Kampkötter, S. Kempf, C. Pies, G. Pizzigoni, P. Ranitzsch, S. Schäfer, S. Uhl, L. Gastaldo, A. Fleischmann, and C. Enss
15:00 TT 33.68 Study of the Energy Thermalisation in Superconducting Absorbers by Means of Low Temperature Magnetic Calorimeters — •Daniel Hengstler, Philipp C.-O. Ranitzsch, Jan-Patrick Porst, Loredana Gastaldo, Andreas Fleischmann, and Christian Enss
15:00 TT 33.69 A high-resolution mK-calorimeter applying SQUID-thermometry — •Andreas Reifenberger, Norman Leps, Andreas Fleischmann, Christian Pies, Christian Enss, and Rüdiger Klingeler
15:00 TT 33.70 A Low-Temperature Scanning Polarizing Microscope for Magneto-Optical Imaging — •Matthias Grünzweig, Stefan Guénon, Matthias Kemmler, Reinhold Kleiner, and Dieter Koelle
15:00 TT 33.71 (contribution withdrawn) Modulated Intensity Spin Echo: µeV resolution for dynamics in magnetic samples — •Georg Brandl, Robert Georgii, Wolfgang Häußler, and Peter Böni
15:00 TT 33.72 Coherent broadband THz spectrometer using photomixers for accurate determination of complex dielectric function — •Malte Langenbach, Komalavalli Thirunavukkuarasu, Holger Schmitz, Ernesto Vidal, Jennifer Marx, Iván Cámara Mayorga, Rolf Güsten, Axel Roggenbuck, Anselm Deninger, Joachim Hemberger, and Markus Grüninger
15:00 TT 33.73 Broadband dielectric spectroscopy on transition metal oxides: Is LuFe2O4 ferroelectric? — •Daniel Niermann, Joost de Groot, Manuel Angst, and Joachim Hemberger
15:00 TT 33.74 High-magnetic-field investigation of CoCr2O4 — •A. V. Pronin, M. Uhlarz, R. Beyer, T. Fischer, J. Wosnitza, B. P. Gorshunov, G. A. Komandin, A. S. Prokhorov, M. Dressel, A. A. Bush, and V. I. Torgashev
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