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Pressure Induced Static Magnetic Order in Superconducting FeSe1-x

Source: Phys. Rev. Lett. 104, 087003 (2010); doi:10.1103/PhysRevLett.104.087003

Published 25 February 2010

PACS
  • 74.70.-b
    Superconducting materials
  • 74.25.Jb
    Electronic structure of superconductors
  • 76.75.+i
    Muon spin rotation and relaxation in condensed matter
  • YEAR: 2010
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
M. Bendele,1,2 A. Amato,1 K. Conder,3 M. Elender,1 H. Keller,2 H.-H. Klauss,4 H. Luetkens,1 E. Pomjakushina,3 A. Raselli,3 and R. Khasanov1
1Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
2Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
3Laboratory for Developments and Methods, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
4IFP, TU Dresden, D-01069 Dresden, Germany
We report on a detailed investigation of the electronic phase diagram of FeSe1-x under pressures up to 1.4 GPa by means of ac magnetization and muon-spin rotation. At a pressure ~=0.8 GPa the nonmagnetic and superconducting FeSe1-x enters a region where static magnetic order is realized above Tc and bulk superconductivity coexists and competes on short length scales with the magnetic order below Tc. For even higher pressures an enhancement of both the magnetic and the superconducting transition temperatures as well as of the corresponding order parameters is observed. These exceptional properties make FeSe1-x to be one of the most interesting superconducting systems investigated extensively at present. ©2010 The American Physical Society
History: Received 25 September 2009; published 25 February 2010
Permalink: http://link.aps.org/abstract/PRL/v104/e087003
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