Focus Session: Iron Pnictides and Other Novel Superconductors VII: Pressure Effects and Thermal Expansion

Presentations

• Effects of pressure on CaFe$_{2}$As$_{2}$ and related materials

  COFFEE_KLATCH · Invited

  March 17, 2009, 11:15 AM – March 17, 2009, 11:51 AM

  Authors

  • P.C. Canfield

    • Ames Laboratory and Department of Physics and Astronomy, Iowa State Univeristy, Ames, Iowa 50011
    • Ames Laboratory and Iowa State University
    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames Lab / Iowa State University
    • Ames Laboratory/Iowa State University

  View abstract →

• Discovery of a pressure-induced ``collapsed'' phase in CaFe$_{2}$As$_{2}$

  ORAL

  March 17, 2009, 11:51 AM – March 17, 2009, 12:03 PM

  Authors

  • A. Kreyssig$^{1,2}$

    • $^1$Ames Laboratory; $^2$Dep. of Physics and Astronomy, Iowa State University, Ames

  • M.A. Green$^{3,4}$

    • $^3$NIST Center for Neutron Research, Gaithersburg; $^4$Dep. of Materials Science and Engineering, University of Maryland, College Park

  • Y. Lee$^{1,2}$

  • G.D. Samolyuk$^{1,2}$

  • P. Zajdel$^{3,5}$

    • $^5$Dep. of Chemistry, University College of London, UK

  • J.W. Lynn$^{3}$

  • S.L. Bud'ko$^{1,2}$

  • M.S. Torikachvili$^{6}$

    • $^6$Dep. of Physics, San Diego State University, San Diego

  • N. Ni$^{1,2}$

  • S. Nandi$^{1,2}$

  • J.B. Le\~{a}o$^{3}$

  • S.J. Poulton$^{3,4}$

  • D.N. Argyriou$^{7}$

    • $^7$Helmholtz-Zentrum Berlin fuer Materialien und Energie, Germany

  • B.N. Harmon$^{1,2}$

  • R.J. McQueeney$^{1,2}$

  • P.C. Canfield$^{1,2}$

  • A.I. Goldman$^{1,2}$

  View abstract →

• Pressure-induced superconducting state of CaFe$_{2}$As$_{2}$ from an antiferromagnetic spin-density-wave state

  ORAL

  March 17, 2009, 12:03 PM – March 17, 2009, 12:15 PM

  Authors

  • E.D. Bauer

    • Los Alamos National Laboratory

  • J.D. Thompson

    • Los Alamos National Laboratory

  • Hanoh Lee

    • Los Alamos National Laboratory

  • Eunsung Park

    • Los Alamos National Laboratory

  • Tuson Park

    • Los Alamos National Laboratory

  • F. Ronning

    • Los Alamos National Laboratory

  View abstract →

• Structural changes in pressure induced superconducting BaFe$_{2}$As$_{2}$: Similarities to chemical doping

  ORAL

  March 17, 2009, 12:15 PM – March 17, 2009, 12:27 PM

  Authors

  • Simon Kimber

    • Helmholtz-Zentrum Berlin fur Materialien und Energie (HZB)

  • Andreas Kreyssig

    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory and Iowa State University
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA

  • Fabiano Yokaichiya

    • Helmholtz-Zentrum Berlin fur Materialien und Energie (HZB)

  • Dimitri Argyriou

    • Helmholtz-Zentrum Berlin fur Materialien und Energie (HZB)

  • J.-Q. Yan

    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA
    • Texas Material Institute, U of Texas at Austin

  • Thomas Hansen

    • Institute Max von Laue-Paul Langevin, 6 rue Jules Horowitz,

  • Tapan Chatterji

    • JCNS, Forschungszentrum Julich Outstation at Institut Laue-Langevin

  • Robert McQueeney

    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA

  • Paul Canfield

    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA

  • Alan Goldman

    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory and Iowa State University
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory
    • Ames Loboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA

  View abstract →

• Dffraction Studies of the P-T Phase Diagram with Single-Crystal Ca122

  ORAL

  March 17, 2009, 12:27 PM – March 17, 2009, 12:39 PM

  Authors

  • Alan Goldman

    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory and Iowa State University
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory
    • Ames Loboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA

  • Andreas Kreyssig

    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory and Iowa State University
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames Laboratory, US DOE, Iowa State University, Ames, IA 5001, USA

  • K. Prokes

    • Helmholtz-Zentrum Berlin f\"ur Materialien und Energie

  • D.K. Pratt

    • Ames Laboratory/Department of Physics and Astronomy

  • D.N. Argyriou

    • Helmholtz Center-Berlin
    • Helmholtz-Zentrum Berlin f\"ur Materialien und Energie

  • J.W. Lynn

    • NCNR, Gaithersburg, MD 20899

  • S. Nandi

    • Ames Loboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy

  • S.A.J. Kimber

    • Helmholtz-Zentrum Berlin f\"ur Materialien und Energie

  • Y. Chen

    • NCNR, Gaithersburg, MD 20899

  • Y.B. Lee

    • Ames Laboratory and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy

  • G. Samolyuk

    • Ames Laboratory, Ames, IA, 50011
    • Ames Laboratory and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy

  • J.B. Leao

    • NCNR, Gaithersburg, MD 20899

  • S.J. Poulton

    • NCNR, Gaithersburg, MD 20899

  • S.L. Bud'ko

    • Ames Laboratory and Iowa State University
    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory/Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames laboratory

  • N. Ni

    • Ames Laboratory and Iowa State University
    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Lab / Iowa State University
    • Ames Laboratory, US DOE and Iowa State University
    • Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy

  • P.C. Canfield

    • Ames Laboratory and Department of Physics and Astronomy, Iowa State Univeristy, Ames, Iowa 50011
    • Ames Laboratory and Iowa State University
    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames Lab / Iowa State University
    • Ames Laboratory/Iowa State University

  • B.N. Harmon

    • Ames Laboratory and Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy

  • R.J. McQueeney

    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory and Iowa State University
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory
    • Ames Laboratory/Department of Physics and Astronomy

  View abstract →

• Pressure-induced shift of $T_c $ in $K_x Sr_{1-x} Fe_2 As_2 $ (x = 0.2, 0.4, 0.7): Analogy to the high-T$_{c}$ cuprate superconductors

  ORAL

  March 17, 2009, 12:39 PM – March 17, 2009, 12:51 PM

  Authors

  • Melissa Gooch

    • Texas Center for Superconductivity at the University of Houston and Department of Physics

  • Bing Lv

    • Texas Center for Superconductivity at the University of Houston and Department of Chemistry
    • TCSUH and Department of Chemistry, University of Houston, Houston, Texas 77204, USA

  • Bernd Lorenz

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

  • Arnold M. Guloy

    • Dept. of Chemistry, University of Houston, Houston, TX 77204
    • Texas Center for Superconductivity at the University of Houston and Department of Chemistry
    • TCSUH and Department of Chemistry, University of Houston, Houston, Texas 77204, USA

  • Ching-Wu Chu

    • University of Houston
    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77204-5002, USA
    • Dept. of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5002
    • Texas Center for Superconductivity at the University of Houston; Lawrence Berkeley National Laboratory; Hong Kong University of Science and Technology
    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77204, USA;

  View abstract →

• Pressure Effect on the Structural and Magnetic Transition in CaFe$_2$As$_2$

  ORAL

  March 17, 2009, 12:51 PM – March 17, 2009, 1:03 PM

  Authors

  • Shiliang Li

    • Department of Physics and Astronomy, The University of Tennessee
    • University of Tennessee, Knoxville
    • University of Tennessee

  • Ying Chen

    • NCNR and Univ. of Maryland
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • NIST Center for Neutron Research, University of Maryland

  • Jeffrey Lynn

    • NIST Center for Neutron Research

  • X. H. Chen

    • University of Science and Technology
    • USTC

  • Pengcheng Dai

    • Oak Ridge National Laboratory
    • Univ of Tennessee, Knoxville
    • University of Tennessee, Knoxville
    • Univ. of Tennessee and NSSD-ORNL
    • University of Tennessee, Oak Ridge National Laboratory

  View abstract →

• Pressure dependence of the inelastic neutron scattering response of CaFe$_{2}$As$_{2}$.

  ORAL

  March 17, 2009, 1:03 PM – March 17, 2009, 1:15 PM

  Authors

  • S. Rosenkranz

  • R. Osborn

  • E. Goremychkin

  • I.S. Todorov

  • D.Y. Chung

  • H. Claus

  • J.A. Schlueter

    • Argonne Nat. Lab.

  • C.D. Malliakas

  • M.G. Kanatzidis

    • Northwestern Univ.

  • A.D. Christianson

    • Oak Ridge Nat. Lab.

  • R.I. Bewley

  • T. Guidi

    • ISIS, Rutherford Lab.

  View abstract →

• Thermal expansion and pressure derivatives of $T_c$ in Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ single crystals

  ORAL

  March 17, 2009, 1:15 PM – March 17, 2009, 1:27 PM

  Authors

  • S.L. Bud'ko

    • Ames Laboratory and Iowa State University
    • Ames Laboratory and Physics Department and Astronomy, Iowa State University, Ames, IA
    • Ames Laboratory
    • Ames Laboratory, US DOE and Iowa State University
    • Ames Laboratory/Iowa State University
    • Ames Laboratory/Department of Physics and Astronomy
    • Ames laboratory

  • M.S. Torikachvili

    • Physics Department, San Diego State University

  • N. Ni

  • J.-Q. Yan

  • P.C. Canfield

    • Ames Laboratory/Iowa State University

  • G.M. Schmiedeshoff

    • Physics Department, Occidental College

  View abstract →

• High-Resolution Thermal Expansion Measurements of CaFe$_2$As$_2$

  ORAL

  March 17, 2009, 1:27 PM – March 17, 2009, 1:39 PM

  Authors

  • A. de Campos

    • Montana State University

  • M.S. da Luz

    • Montana State Univerty
    • Montana State University

  • John Neumeier

    • Montana State Univerty
    • Montana State University
    • Department of Physics - MSU, Bozeman-MT, USA

  • E.D. Bauer

    • Los Alamos National Laboratory

  • F. Ronning

    • Los Alamos National Laboratory

  • J.D. Thompson

    • Los Alamos National Laboratory

  • Hanoh Lee

    • Los Alamos National Laboratory

  • Tuson Park

    • Los Alamos National Laboratory

  • Eunsung Park

    • Sungkyunkwan University

  View abstract →

• Magnetic Ordering and Negative Thermal Expansion in PrFeAsO

  ORAL

  March 17, 2009, 1:39 PM – March 17, 2009, 1:51 PM

  Authors

  • D.N. Argyriou

  • S.A.J. Kimber

  • F. Yokaichiya

  • K. Habicht

  • S. Gerischer

    • Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), Glienicker Strasse 100, D-14109, Berlin, Germany

  • R Klingeler

  • C. Hess

  • G. Behr

  • A. Kondrat

  • B. B\"uchner

    • Leibniz-Institute for Solid State and Materials Research (IFW) Dresden, Germany

  • T. Hansen

  • T. Chatterji

    • Institute Max von Laue-Paul Langevin, 6 rue Jules Horowitz, BP 156, F-38042, Grenoble Cedex 9, France

  View abstract →