Published December 2019 | Version v1
Journal article Metadata-only

Moessbauer spectroscopy study of KxFe2-ySe2 under pressure

Creators

  • 1. Kwansei Gakuin University, Graduate School of Science and Technology, Sanda, Hyogo (Japan)
  • 2. National Institutes for Quantum and Radiological Science and Technology, Sayo, Hyogo (Japan)
  • 3. Kyoto University, Institute for Integrated Radiation and Nuclear Science, Kumatori, Osaka (Japan)
  • 4. RIKEN SPring-8 Center, Sayo, Hyogo (Japan)

Description

A Moessbauer spectroscopy study of the iron-based superconductor KxFe2-ySe2, with two superconducting phases of SC1 and a pressure induced SC2 was performed under pressure. This compound consists of two separated phases of major magnetic (non-superconducting) and minor superconducting components. The internal magnetic field of the major magnetic component decreased at the SC2 phase and disappeared around 15 GPa, while that of the minor non-magnetic component maintained its intensity up to 14.9 GPa. Multiple internal magnetic fields were introduced for improved fits to the spectra of the magnetic component at the SC2 phase, suggesting the importance of the electron-electron correlation in the emergence of the SC2 phase. (author)

Availability note (English)

Available from https://doi.org/10.7566/JPSJ.88.124703

Additional details

Identifiers

DOI
10.7566/JPSJ.88.124703;

Publishing Information

Journal Title
Journal of the Physical Society of Japan (Online)
Journal Volume
88
Journal Issue
12
Journal Page Range
p. 124703.1-124703.4
ISSN
1347-4073

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
51037462
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
DOPPLER EFFECT; ELECTRONIC STRUCTURE; FERMI LEVEL; IRON SELENIDES; MAGNETIC FIELDS; MAGNETIC MOMENTS; MAGNETIZATION; MAGNETOMETERS; MOESSBAUER SPECTROMETERS; PHASE TRANSFORMATIONS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE
Descriptors DEC
CHALCOGENIDES; ENERGY LEVELS; GAMMA SPECTROMETERS; IRON COMPOUNDS; MEASURING INSTRUMENTS; PRESSURE RANGE; SELENIDES; SELENIUM COMPOUNDS; SPECTROMETERS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
29 refs., 4 figs.