000192778 001__ 192778
000192778 005__ 20190414065617.0
000192778 0247_ $$2doi$$a10.1103/PhysRevB.88.134524
000192778 022__ $$a1550-235X
000192778 02470 $$a000326271500003$$2ISI
000192778 037__ $$aARTICLE
000192778 245__ $$aProbing the anisotropic vortex lattice in the Fe-based superconductor KFe_{2}As_{2} using small-angle neutron scattering
000192778 260__ $$c2013
000192778 269__ $$a2013
000192778 336__ $$aJournal Articles
000192778 520__ $$aUsing small angle neutron scattering, the anisotropy of the magnetic vortex lattice (VL), in the heavily hole-doped pnictide superconductor KFe2As2, was studied. Well-ordered VL scattering patterns were measured with fields applied in directions between B∥c and the basal plane, rotating either towards [100] or [110]. Slightly distorted hexagonal patterns were observed when B∥c. However, the scattering pattern distorted more strongly as the field was rotated away from the c axis. At low field, the arrangement of vortices is affected by the anisotropy of penetration depth in the plane perpendicular to the field. By fitting the distortion with the anisotropic London model, we obtain an estimate of ∼3.4 for the anisotropy factor γ between the in-plane and c-axis penetration depths at the lowest temperature studied. The results further reveal VL phase transitions as a function of field direction. We discuss these transitions using the “hairy ball” theorem.
000192778 6531_ $$apnictide
000192778 6531_ $$avortex lattice
000192778 6531_ $$asuperconductivity
000192778 6531_ $$ahairy ball
000192778 700__ $$aKawano-Furukawa, H.
000192778 700__ $$aDebeer-Schmitt, Lisa
000192778 700__ $$aKikuchi, H.
000192778 700__ $$aCameron, A. S.
000192778 700__ $$aHolmes, A. T.
000192778 700__ $$aHeslop, R. W.
000192778 700__ $$aForgan, E. M.
000192778 700__ $$aWhite, J. S.
000192778 700__ $$aKihou, K.
000192778 700__ $$aLee, C. H.
000192778 700__ $$aIyo, A.
000192778 700__ $$aEisaki, H.
000192778 700__ $$aSaito, T.
000192778 700__ $$aFukazawa, H.
000192778 700__ $$aKohori, Y.
000192778 700__ $$aGavilano, J. L.
000192778 773__ $$j88$$tPhysical Review B$$q134524$$k13
000192778 909C0 $$xU11706$$0252200$$pLQM
000192778 909CO $$pSB$$particle$$ooai:infoscience.tind.io:192778
000192778 917Z8 $$x212499
000192778 937__ $$aEPFL-ARTICLE-192778
000192778 973__ $$rREVIEWED$$sPUBLISHED$$aOTHER
000192778 980__ $$aARTICLE