Focus Session: Fe-based Superconductivity - Properties of 122 phases

Presentations

• Combined effects of chemical doping and pressure on physical properties of CaFe$_{2}$As$_{2}$

  ORAL

  Feb. 29, 2012, 2:30 PM – Feb. 29, 2012, 2:42 PM

  Authors

  • Sheng Ran

    • Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University
    • Department of Physics and Astronomy and Ames Laboratory-USDOE, Iowa State University

  • Sergey Bud'ko

    • Ames Laboratory US DOE and Dept. of Physics and Astronomy, ISU, Ames, IA 50011, USA and SPSMS, UMR-E CEA/UJF-Grenoble 1, INAC, 38054 Grenoble, France
    • Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University
    • Department of Physics and Astronomy and Ames Laboratory-USDOE, Iowa State University
    • Department of Physics and Astronomy, Iowa State University and Ames Laboratory

  • Paul Canfield

    • Ames Laboratory, Iowa State University
    • Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University
    • Department of Physics and Astronomy and Ames Laboratory-USDOE, Iowa State University
    • Department of Physics and Astronomy, Iowa State University and Ames Laboratory
    • Ames Laboratory and Iowa State University
    • Ames Laboratory and Department of Physics, Iowa State University

  • Milton Torikachvili

    • Department of Physics, San Diego State University
    • Dept. of Physics, San Diego State University

  View abstract →

• First Principles Calculations of the Pnictide CaFe$_{2}$As$_{2}$ under Pressure

  ORAL

  Feb. 29, 2012, 2:42 PM – Feb. 29, 2012, 2:54 PM

  Authors

  • Khandker Quader

    • Kent State University

  • Michael Widom

    • Carnegie-Mellon University
    • Carnegie Mellon University
    • Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15232, USA

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• Evidence for domain wall superconductivity in antiferromagnetic CaFe2As2

  ORAL

  Feb. 29, 2012, 2:54 PM – Feb. 29, 2012, 3:06 PM

  Authors

  • Adam P. Dioguardi

    • UC Davis Physics

  • Hong Xiao

    • Department of Physics, University of Crete and FORTH

  • T. Hu

    • Department of Physics, University of Crete and FORTH

  • Nicholas apRoberts-Warren

    • Department of Physics, UC Davis

  • Abigail Shockley

    • Department of Physics, UC Davis

  • John Crocker

    • Department of Physics, UC Davis

  • David M. Nisson

    • Department of Physics, UC Davis

  • Z. Viskadourakis

    • Department of Physics, University of Crete and FORTH

  • Xianyang Tee

    • Division of Physics and Applied Physics, Nanyang Technology University

  • I. Radulov

    • Department of Physics, University of Crete and FORTH

  • C.C. Almasan

    • Department of Physics, Kent State University

  • Nicholas J. Curro

    • Department of Physics, UC Davis

  • Christos Panagopoulos

    • Department of Physics, University of Crete and FORTH

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• Local atomic structure of BaFe$_2$As$_2$ by neutron powder diffraction

  ORAL

  Feb. 29, 2012, 3:06 PM – Feb. 29, 2012, 3:18 PM

  Authors

  • Jennifer Niedziela

    • Dept. of Physics and Astronomy, U. Tennessee, Knoxville; ORNL - Neutron Sciences Directorate

  • Takeshi Egami

    • Dept. of Mat. Science and Engineering, Dept. of Physics and Astronomy, U. Tennessee, Knoxville; ORNL - Joint Institute for Neutron Sciences
    • University of Tennessee
    • University of Tennesse and Oak Ridge National Laboratory

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• First principles study of uniaxial pressure-induced phase transitions in CaFe$_2$As$_2$ and BaFe$_2$As$_2$

  ORAL

  Feb. 29, 2012, 3:18 PM – Feb. 29, 2012, 3:30 PM

  Authors

  • Roser Valenti

    • Institut fuer Theoretische Physik, Goethe Universitaet Frankfurt, 60438 Frankfurt, Germany
    • None
    • Goethe University

  • Milan Tomic

    • Institut fuer Theoretische Physik, Goethe Universitaet Frankfurt, 60438 Frankfurt, Germany

  • Harald O. Jeschke

    • Institut fuer Theoretische Physik, Goethe Universitaet Frankfurt, 60438 Frankfurt, Germany

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• Temperature-Pressure Phase Diagram of Lightly Hole-doped BaFe$_2$As$_2$

  ORAL

  Feb. 29, 2012, 3:30 PM – Feb. 29, 2012, 3:42 PM

  Authors

  • Balazs Sipos

    • Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 USA

  • Athena Safa-Sefat

    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 USA
    • Oak Ridge National Laboratory, Oak Ridge, TN
    • Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  • B.C. Sales

    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 USA
    • Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  View abstract →

• ABSTRACT WITHDRAWN

  Feb. 29, 2012, 3:42 PM – Feb. 29, 2012, 3:54 PM

  View abstract →

• Magnetism, superconductivity, and the volume collapse transition in (Ca$_{0.67}$Sr$_{0.33})$Fe$_{2}$As$_{2}$ under pressure

  ORAL

  Feb. 29, 2012, 3:54 PM – Feb. 29, 2012, 4:06 PM

  Authors

  • Jason Jeffries

    • Lawrence Livermore National Laboratory

  • N.P. Butch

    • Lawrence Livermore National Laboratory

  • S.R. Saha

    • University of Maryland

  • K. Kirshenbaum

    • University of Maryland

  • S.T. Weir

    • Lawrence Livermore National Laboratory

  • Y.K. Vohra

    • University of Alabama, Birmingham

  • J. Paglione

    • University of Maryland

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• Inducing structural collapse and superconductivity in CaFe$_{2}$As$_{2}$ by systematic substitutions of rare earths

  ORAL

  Feb. 29, 2012, 4:06 PM – Feb. 29, 2012, 4:18 PM

  Authors

  • Shanta Saha

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland

  • Tyler Drye

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742

  • Nicholas Butch

    • Lawrence Livermore National Laboratory
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • University of Maryland

  • Rongwei Hu

    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland

  • Kevin Kirshenbaum

    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • University of Maryland
    • Center for Nanophysics and Advanced Materials, Physics Dept., University of Maryland

  • Steven Ziemak

    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • University of Maryland

  • Johnpierre Palione

    • University of Maryland
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • University of Maryland, College Park
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, Maryland 20742, USA
    • Center for Nanophysics and Advanced Materials, Physics Dept., University of Maryland
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland

  • Peter Zavalij

    • Dept. of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742

  • Jeffrey Lynn

    • NIST Center for Neutron Research, Gaithersburg, MD 20899

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• Defect-Associated Superconductivity in (Pr,Ca)Fe$_{2}$As$_{2}$

  ORAL

  Feb. 29, 2012, 4:18 PM – Feb. 29, 2012, 4:30 PM

  Authors

  • Feng Yan Wei

    • Department of Physics and TCSUH, University of Houston, Houston, Texas 77204-5002, USA
    • TCSUH and Department of Physics, University of Houston
    • Texas Center for superconductivity at University of Houston Department of Physics
    • Texas Center for Superconductivity, University of Houston, Houston TX 77204-­5002, USA

  • Bing Lv

    • Texas Center for superconductivity at University of Houston Department of Physics

  • Liangzi Deng

    • Texas Center for superconductivity at University of Houston Department of Physics

  • Yanyi Sun

    • Texas Center for superconductivity at University of Houston Department of Physics

  • Yuyi Xue

    • Texas Center for superconductivity at University of Houston Department of Physics

  • Chingwu Chu

    • Texas Center for superconductivity at University of Houston Department of Physics, Lawrence Berkeley National Laboratory

  View abstract →

• Rare Earth Doping in the (Sr,Ca)Fe2As2 System

  ORAL

  Feb. 29, 2012, 4:30 PM – Feb. 29, 2012, 4:42 PM

  Authors

  • Tyler Drye

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742

  • Shanta Saha

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland

  • Peter Zavalij

    • Department of Chemistry, University of Maryland-College Park

  • Johnpierre Palione

    • University of Maryland
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742
    • University of Maryland, College Park
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, Maryland 20742, USA
    • Center for Nanophysics and Advanced Materials, Physics Dept., University of Maryland
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland

  View abstract →

• Microstructure and the non-bulk superconductivity up to 49K in electron-doped Rare-earth (Ca, R)Fe$_{2}$As$_{2}$ (R=La, Ce, Pr and Nd) Single Crystals

  ORAL

  Feb. 29, 2012, 4:42 PM – Feb. 29, 2012, 4:54 PM

  Authors

  • Bing Lv

    • Department of Chemistry and TCSUH, University of Houston, Houston, Texas 77204-5003, USA
    • TCSUH and Department of Physics, University of Houston

  • Feng Yan Wei

    • Department of Physics and TCSUH, University of Houston, Houston, Texas 77204-5002, USA
    • TCSUH and Department of Physics, University of Houston
    • Texas Center for superconductivity at University of Houston Department of Physics
    • Texas Center for Superconductivity, University of Houston, Houston TX 77204-­5002, USA

  • Liangzi Deng

    • Dept. of Physics at the University of Houston and TcSUH
    • TCSUH and Department of Physics, University of Houston
    • Texas Center for Superconductivity, University of Houston, Houston TX 77204-­5002, USA

  • Yanyi Sun

    • TCSUH and Department of Physics, University of Houston

  • Yu-Yi Xue

    • Department of Physics and TCSUH, University of Houston, Houston, Texas 77204-5002, USA
    • TCSUH and Department of Physics, University of Houston

  • Melissa Gooch

    • TCSUH and Department of Physics, University of Houston

  • James Meen

    • TCSUH and Department of Chemistry, University of Houston

  • Paul Ching-Wu Chu

    • Department of Physics and TCSUH, University of Houston, Houston, Texas 77204-5002;Lawrence Berkeley National Laboratory, 1 Cyclotron Road, USA
    • TCSUH and Department of Physics, University of Houston
    • Texas Center for Superconductivity, University of Houston, Houston TX 77204-­5002, USA

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• Codoping -- A way to enhance the upper critical field in iron-arsenic superconductors

  ORAL

  Feb. 29, 2012, 4:54 PM – Feb. 29, 2012, 5:06 PM

  Authors

  • M. Nicklas

    • MPI for Chemical Physics of Solids, Dresden, Germany

  • F. Weickert

    • LANL, MPA-CMMS, Los Alamos, NM, USA

  • J. Wosnitza

    • HLD, HZDR, Dresden, Germany

  • A. Leithe-Jasper

    • MPI for Chemical Physics of Solids, Dresden, Germany

  • W. Schnelle

    • MPI for Chemical Physics of Solids, Dresden, Germany

  • H. Rosner

    • MPI for Chemical Physics of Solids, Dresden, Germany

  View abstract →

• Influence of random point defects introduced by proton irradiation on the vortex pinning and dynamics of superconducting $122$ iron arsenides

  ORAL

  Feb. 29, 2012, 5:06 PM – Feb. 29, 2012, 5:18 PM

  Authors

  • Leonardo Civale

    • Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Los Alamos National Laboratory

  • Nestor Haberkorn

    • Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Los Alamos National Laboratory

  • Igor Usov

    • Los Alamos National Laboratory

  • Jeehoon Kim

    • Los Alamos National Laboratory

  • Boris Maiorov

    • Los Alamos National Laboratory

  • Marcus Weingard

    • Los Alamos National Laboratory

  • G.F. Chen

    • Department of Physics, Renmin University of China, Beijing, China

  • W. Yu

    • Department of Physics, Renmin University of China, Beijing, China

  • W. Hirata

    • Superconductivity Research Laboratory-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan

  • S. Miyasaka

    • Superconductivity Research Laboratory-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan

  • S. Tajima

    • Superconductivity Research Laboratory-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan

  • N. Chikumoto

    • Superconductivity Research Laboratory-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan

  • K. Tanabe

    • Superconductivity Research Laboratory-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135-0062, Japan

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• Upper critical and irreversible fields of polycrystalline CeFeAsO$_{1-x}$F$_{x}$ superconductors

  ORAL

  Feb. 29, 2012, 5:18 PM – Feb. 29, 2012, 5:30 PM

  Authors

  • Shen V. Chong

    • Industrial Research Limited, New Zealand

  • Jeffery Tallon

    • The MacDiarmid Institute, Industrial Research Limited
    • Industrial Research Limited, New Zealand
    • Industrial Research Ltd., New Zealand

  • Grant Williams

    • The MacDiarmid Institute, Victoria University of Wellington
    • The MacDiarmid Institute, Victoria University of Wellington, New Zealand
    • Victoria University of Wellington, New Zealand

  View abstract →