Focus Session: Iron Pnictides and Other Novel Superconductors XII: Phonons and Miscellaneous Experiment

Presentations

• Role of fluorine in the iron pnictides: phonon softening and effective hole-doping

  ORAL

  March 18, 2009, 2:30 PM – March 18, 2009, 2:42 PM

  Authors

  • Jesse Noffsinger

    • UC Berkeley, Lawrence Berkeley National Labratory

  • Feliciano Giustino

    • UC Berkeley, Lawrence Berkeley National Labratory

  • Steven G. Louie

    • The department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory
    • UC Berkeley, Lawrence Berkeley National Labratory
    • University of California Berkeley
    • Department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
    • Department of Physics, University of California, Berkeley and Lawrence Berkeley National Laboratory
    • Department of Physics, University of California at Berkeley and Materials Sciences Division of Lawrence Berkeley National Laboratory
    • University of California, Berkeley
    • University of California at Berkeley and Lawrence Berkeley National Lab

  • Marvin L. Cohen

    • The department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory
    • UC Berkeley, Lawrence Berkeley National Labratory
    • University of California Berkeley
    • Department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
    • Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory
    • Department of Physics, University of California at Berkeley and Materials Sciences Division of Lawrence Berkeley National Laboratory
    • Physics Dept, UC Berkeley
    • University of California, Berkeley and MSD, Lawrence Berkeley National Laboratory

  View abstract →

• Effects of Magnetic Ordering on Phonon Spectra in Iron-based Superconductors: First Principle Calculation and Theoretical Analysis

  ORAL

  March 18, 2009, 2:42 PM – March 18, 2009, 2:54 PM

  Authors

  • Shinich Shamoto

    • MNRC JAEA

  • Tatsuo Fukuda

    • Spring-8/JAEA

  • Hiroki Nakamura

    • CCSE, JAEA

  • Masahiko Machida

    • CCSE, JAEA

  • Alfred Baron

    • Spring-8/RIKEN

  View abstract →

• Cubic anharmonicity of the Fe-As bond of the iron-pnictides estimated from Raman spectroscopy.

  ORAL

  March 18, 2009, 2:54 PM – March 18, 2009, 3:06 PM

  Authors

  • Mats Granath

    • Gothenburg University

  • Johan Bielecki

    • Chalmers University of Technology

  • Joakim Holmlund

    • Chalmers University of Technology

  • Chris Knee

    • Chalmers University of Technology

  • Nan Lin Wang

    • Beijing National Laboratory for Condensed Matter Physics

  • Lars B\"orjesson

    • Chalmers University of Technology

  View abstract →

• Phonon Softening in PrFeAsO$_{1-y}$ (y$\sim $0.2) by Inelastic X-Ray Scattering

  ORAL

  March 18, 2009, 3:06 PM – March 18, 2009, 3:18 PM

  Authors

  • A.Q.R. Baron

    • SPring-8/RIKEN and JASRI
    • SPring-8/RIKEN and SPring-8/JASRI

  • Tatsuo Fukuda

    • SPring-8/RIKEN and JAEA

  • Shin-ichi Shamoto

    • JAEA

  • Hiroshi Uchiyama

    • SPring-8/JASRI

  • Jun-ichiro Mizuki

    • JAEA

  • Hiroki Nakamura

    • CREST, JST, JAEA

  • Masahiko Machida

    • CREST, JST, JAEA

  • Motoyuki Ishikado

    • JAEA

  • Masatoshi Arai

    • J-PARC JAEA

  • Hijiri Kito

    • NeRI, AIST

  • Hiroshi Eisaki

    • NeRI, AIST

  View abstract →

• CaFe$_{2}$As$_{2}$ Phonons via Inelastic X-ray Scattering and First Principles Calculations

  ORAL

  March 18, 2009, 3:18 PM – March 18, 2009, 3:30 PM

  Authors

  • Steven Hahn

    • Ames Laboratory and Iowa State University

  • Ahmet Alatas

    • Advanced Photon Source, Argonne National Laboratory

  • Bogdan Leu

    • Advanced Photon Source, Argonne National Laboratory

  • Y.B. Lee

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

  • 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

  • D.Y. Chung

    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory

  • Iliya Todorov

    • Materials Science Division, Argonne National Laboratory

  • Mercouri Kanatzidis

    • Materials Science Division, Argonne National Laboratory and Department of Chemistry, Northwestern University

  • Ercan Alp

    • Advanced Photon Source, Argonne National Laboratory

  • 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

  • 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

  • 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

  • B.N. Harmon

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

  View abstract →

• Magnetic and lattice coupling in the AFe$_2$As$_2$ (A=Ca, Ba, and Sr) compounds

  ORAL

  March 18, 2009, 3:30 PM – March 18, 2009, 3:42 PM

  Authors

  • Haifeng Li

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

  • David Vaknin

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

  • J.L. Zarestky

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

  • Wei Tian

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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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 →

• Large electron-A$_{1g}$ phonon interaction in doped LaOFeAs: coupling with antiferromagnetism

  ORAL

  March 18, 2009, 3:42 PM – March 18, 2009, 3:54 PM

  Authors

  • Felix Yndurain

    • Universidad Autonoma de Madrid

  • Jose M. Soler

    • Universidad Autonoma de Madrid
    • Univ. Autonoma de Madrid

  View abstract →

• Phonon and magnetic excitations in the novel BaFe1.8Co0.2As2 superconductor

  ORAL

  March 18, 2009, 3:54 PM – March 18, 2009, 4:06 PM

  Authors

  • Dan Parshall

    • Univ of Tennessee, Dept of Physics

  • Konstantin Lokshin

    • Univ of Tennessee, Dept of Materials Science

  • Matthew Stone

    • ORNL

  • Douglas Abernathy

    • ORNL

  • Mark Lumsden

    • ORNL

  • Andrew Christianson

    • ORNL

  • David Mandrus

    • ORNL

  • Athena Safa-Sefat

    • ORNL

  • Takeshi Egami

    • ORNL; Univ of Tennessee, Depts of Physics and Materials Science

  View abstract →

• 3d crystal field excitations in iron pnictides studied by Raman spectroscopy

  ORAL

  March 18, 2009, 4:06 PM – March 18, 2009, 4:18 PM

  Authors

  • Tao Zhou

    • New Jersey Institute of Technology

  • Zhen Qin

    • New Jersey Institute of Technology

  • S. M. O'Malley

    • New Jersey Institute of Technology

  • Kwok Lo

    • New Jersey Institute of Technology

  • Chenglin Zhang

    • Rutgers University

  • Sang-Wook Cheong

    • Rutgers University

  View abstract →

• Evidence for two gaps from specific heat in LiFeAs single crystals

  ORAL

  March 18, 2009, 4:18 PM – March 18, 2009, 4:30 PM

  Authors

  • Fengyan Wei

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

  • Bing Lv

    • Texas Center for Superconductivity at University of Houston and Department of Chemistry

  • Feng Chen

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

  • Yuyi Xue

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

  • Arnold M. Guloy

    • Texas Center for Superconductivity at University of Houston and Department of Chemistry

  • Chingwu Chu

    • Texas Center for Superconductivity at Universtiy of Houston, Lawrence Berkeley National Laboratory, Hong Kong University of Science and Technology

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• Coexistence of superconductivity and ferromagnetism in BaFe$_{1.8}$Co$_{0.2}$As$_2$

  ORAL

  March 18, 2009, 4:30 PM – March 18, 2009, 4:42 PM

  Authors

  • M.S. da Luz

    • Montana State Univerty
    • Montana State University

  • Richard K. Bollinger

    • Montana State University
    • Montana State Universtity

  • John Neumeier

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

  • A. Sefat

    • Oak Ridge National Laboratory

  • M. A. McGuire

    • Oak Ridge National Laboratory

  • R. Jin

    • Oak Ridge National Laboratory

  • B. C. Sales

    • Oak Ridge National Laboratory

  • D. Mandrus

    • Oak Ridge National Laboratory

  View abstract →

• Comprehensive Characterization of Superconductivity in Co-doped BaFe$_{2}$As$_{2}$

  ORAL

  March 18, 2009, 4:42 PM – March 18, 2009, 4:54 PM

  Authors

  • Tsuyoshi Tamegai

    • Dep. of Appl. Physics, The University of Tokyo

  • Yasuyuki Nakajima

    • University of Tokyo
    • Dep. of Appl. Physics, The University of Tokyo

  • Toshihiro Taen

    • Dep. of Appl. Physics, The University of Tokyo

  View abstract →

• Superconductivity in Sr(Fe,Ni)$_2$As$_2$ single crystals

  ORAL

  March 18, 2009, 4:54 PM – March 18, 2009, 5:06 PM

  Authors

  • N. P. Butch

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

  • Shanta Saha

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

  • Kevin Kirshenbaum

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

  • Johnpierre Paglione

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

  View abstract →

• Physical Properties in a 5-Band Spin Flucutuation Theory of Ferropnictides

  ORAL

  March 18, 2009, 5:06 PM – March 18, 2009, 5:18 PM

  Authors

  • Greg Boyd

    • Department of physics,University of Florida, Gainesville, FL-32611,USA.
    • University of Florida

  • Siegfried Graser

    • University of Florida
    • Department of physics,University of Florida, Gainesville, FL-32611,USA.

  • Vivek Mishra

    • Department of physics,University of Florida, Gainesville, FL-32611,USA.
    • University of Florida

  • P.J. Hirschfeld

    • University of Florida
    • Department of physics,University of Florida, Gainesville, FL-32611,USA.

  View abstract →