Published 2010 | Version v1
Journal article Metadata-only

Moessbauer high pressure and magnetic field studies of the superconductor FeSe

Creators

  • 1. Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg - University, Mainz (Germany)
  • 2. Department of Physics, University of Paderborn, Paderborn (Germany)
  • 3. Max-Planck-Institute for Chemistry, Mainz (Germany)
  • 4. Department of Chemistry, Princeton University, Princeton (United States)

Description

Superconducting FeSe has been investigated by Moessbauer spectroscopy applying high pressure and strong external magnetic fields. It was found that pressure-induced structural phase transition between tetragonal and hexagonal modifications is accompanied by increased distortion of local surrounding of Fe atoms. Appearance of the hexagonal phase above 7.2 GPa is accompanied by degradation of superconducting properties of FeSe. Low-temperature measurements demonstrated that the ground states in both orthorhombic and hexagonal phases of FeSe are nonmagnetic. Moessbauer measurements in the external magnetic field below transition to the superconducting state revealed zero electron spin density on Fe atoms. Interpretation of Moessbauer spectra of FeSe in the Shubnikov phase is discussed.

Additional details

Identifiers

URL
http://www.dpg-verhandlungen.de;

Publishing Information

Journal Title
Verhandlungen der Deutschen Physikalischen Gesellschaft
Journal Issue
Regensburg 2010 issue
Series
Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 45(3)
Journal Page Range
[1 p.]
ISSN
0420-0195
CODEN
VDPEAZ

Conference

Title
DPG Spring meeting 2010 of the condensed matter section with the divisions biological physics, chemical and polymer physics, crystallography, dielectric solids, dynamics and statistical physics, low temperature physics, magnetism, metal and material physics, physics of socio-economic systems, radiation and medical physics, semiconductor physics, surface science, thin films, vacuum science and technology as well as the working group industry and business, with job market, symposia, teachers' days, tutorials, exhibition of scientific instruments and literature
Dates
21-26 Mar 2010
Place
Regensburg (Germany)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
42068029
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ABSORPTION SPECTRA; CRYSTAL-PHASE TRANSFORMATIONS; ELECTRONIC STRUCTURE; GROUND STATES; HEXAGONAL LATTICES; IRON 57; IRON IONS; IRON SELENIDES; MAGNETIC FIELDS; MOESSBAUER EFFECT; ORTHORHOMBIC LATTICES; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SHUBNIKOV-DE HAAS EFFECT; SPIN ORIENTATION; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TETRAGONAL LATTICES
Descriptors DEC
CHALCOGENIDES; CHARGED PARTICLES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ENERGY LEVELS; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IONS; IRON COMPOUNDS; IRON ISOTOPES; ISOTOPES; NUCLEI; ORIENTATION; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; PRESSURE RANGE; SELENIDES; SELENIUM COMPOUNDS; SPECTRA; STABLE ISOTOPES; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
Session: TT 25.9 Mi 17:45; No further information available