Electronic phase separation in the slightly underdoped iron pnictide superconductor Ba(1-x)K(x)Fe(2)As(2)

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dc.creatorPark, J. T.
dc.creatorInosov, D. S.
dc.creatorNiedermayer, Ch.
dc.creatorSun, G. L.
dc.creatorHaug, D.
dc.creatorChristensen, N. B.
dc.creatorDinnebier, R.
dc.creatorBoris, A. V.
dc.creatorDrew, A. J.
dc.creatorSchulz, L.
dc.creatorShapoval, T.
dc.creatorWolff, U.
dc.creatorNeu, V.
dc.creatorYang, Xiaoping
dc.creatorLin, C. T.
dc.creatorKeimer, B.
dc.creatorHinkov, V.
dc.date2008-11-13
dc.date.accessioned2026-07-07T12:54:10Z
dc.date.available2026-07-07T12:54:10Z
dc.descriptionHere we present a combined study of the slightly underdoped novel pnictide superconductor Ba(1-x)K(x)Fe(2)As(2) by means of X-ray powder diffraction, neutron scattering, muon spin rotation (muSR), and magnetic force microscopy (MFM). Commensurate static magnetic order sets in below Tm ~ 70 K as inferred from the emergence of the magnetic (1 0 -3) reflection in the neutron scattering data and from the observation of damped oscillations in the zero-field-muSR asymmetry. Transverse-field muSR below Tc shows a coexistence of magnetically ordered and non-magnetic states, which is also confirmed by MFM imaging. We explain such coexistence by electronic phase separation into antiferromagnetic and superconducting/normal state regions on a lateral scale of several tens of nanometers. Our findings indicate that such mesoscopic phase separation can be considered an intrinsic property of some iron pnictide superconductors.
dc.identifierhttps://arxiv.org/abs/0811.2224
dc.identifierhttp://arxiv.org/abs/0811.2224
dc.identifierPhys. Rev. Lett. 102, 117006 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.117006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223837
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleElectronic phase separation in the slightly underdoped iron pnictide superconductor Ba(1-x)K(x)Fe(2)As(2)
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