Coexistence of different electronic phases in the K0.8Fe1.6Se2 superconductor: A bulk-sensitive hard x-ray spectroscopy study

@article{ ISI:000304932200008,
Author = {Simonelli, L. and Saini, N. L. and Sala, M. Moretti and Mizuguchi, Y.
   and Takano, Y. and Takeya, H. and Mizokawa, T. and Monaco, G.},
Title = {{Coexistence of different electronic phases in the K0.8Fe1.6Se2
   superconductor: A bulk-sensitive hard x-ray spectroscopy study}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2012}},
Volume = {{85}},
Number = {{22}},
Month = {{JUN 7}},
Abstract = {{We have studied electronic and magnetic properties of the K0.8Fe1.6Se2
   superconductor by x-ray absorption and emission spectroscopy. Detailed
   temperature-dependent measurements along with a direct comparison with
   the binary FeSe system have revealed coexisting electronic phases: a
   majority phase with a high-spin Fe3+ state and a minority phase with an
   intermediate-spin Fe2+ state. The effect of high-temperature annealing
   suggests that the compressed phase with a lower-spin Fe2+ state is
   directly related to the high-T-c superconductivity in the title system.
   The results clearly underline the glassy nature of superconductivity in
   the electronically inhomogeneous K0.8Fe1.6Se2, similar to the
   superconductivity in granular phases.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Simonelli, L (Corresponding Author), European Synchrotron Radiat Facil, Boite Postale 220, F-38043 Grenoble, France.
   Simonelli, L.; Sala, M. Moretti; Monaco, G., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Saini, N. L., Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
   Mizuguchi, Y.; Takano, Y.; Takeya, H., Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan.
   Mizuguchi, Y.; Takano, Y.; Takeya, H., JST TRIP, Tsukuba, Ibaraki 3050047, Japan.
   Mizokawa, T., Univ Tokyo, Dept Phys, Kashiwa, Chiba 2778561, Japan.
   Mizokawa, T., Univ Tokyo, Dept Complex Sci & Engn, Kashiwa, Chiba 2778561, Japan.}},
DOI = {{10.1103/PhysRevB.85.224510}},
Article-Number = {{224510}},
ISSN = {{1098-0121}},
Keywords-Plus = {{COMPLEXES}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Mizuguchi, Yoshikazu/Q-9979-2017
   Saini, Naurang/J-7918-2013
   Mizokawa, Takashi/E-3302-2015
   Sala, Marco Moretti/H-1034-2014
   Moretti, Marco/AAF-9255-2019
   Monaco, Giulio/AAW-4387-2020
   Simonelli, Laura/I-1963-2015
   Takano, Yoshihiko/H-2788-2011}},
ORCID-Numbers = {{Mizuguchi, Yoshikazu/0000-0002-4771-7805
   Saini, Naurang/0000-0003-3684-1517
   Mizokawa, Takashi/0000-0002-7682-2348
   Sala, Marco Moretti/0000-0002-9744-9976
   Moretti, Marco/0000-0002-9744-9976
   Monaco, Giulio/0000-0003-2497-6422
   Takano, Yoshihiko/0000-0002-1541-6928}},
Number-of-Cited-References = {{38}},
Times-Cited = {{24}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{33}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{954FO}},
Unique-ID = {{ISI:000304932200008}},
DA = {{2020-12-22}},
}