000181978 001__ 181978
000181978 005__ 20180913061617.0
000181978 0247_ $$2doi$$a10.1103/PhysRevB.86.134425
000181978 02470 $$2ISI$$a000310195300001
000181978 037__ $$aARTICLE
000181978 245__ $$aPossible skyrmion-lattice ground state in the B20 chiral-lattice magnet MnGe as seen via small-angle neutron scattering
000181978 269__ $$a2012
000181978 260__ $$aCollege Pk$$bAmer Physical Soc$$c2012
000181978 300__ $$a7
000181978 336__ $$aJournal Articles
000181978 520__ $$aWe have investigated the magnetic structure in a polycrystalline sample of the B20-type MnGe by means of small-angle neutron scattering. On the projected diffraction plane normal to the incoming neutron beam, a Debye-ring-like pattern appears due to the random orientation of the spin helix q vectors (∥<100>). When an external magnetic field is applied normal to the incoming neutron beam, an intense peak with wave vector (q) perpendicular to the applied magnetic field is observed as the hallmark of the formation of a skyrmion lattice with a multiple-q helix in a wide temperature-magnetic-field region. This scattering intensity remains even after removing the magnetic field, which indicates that a skyrmion lattice is stabilized as the ground state. A different form of skyrmion lattice, either square or cubic, is proposed, which is also shown to be in good agreement with previous high-angle neutron diffraction results. Calculations based on such structures also describe the magnetic-field profile of the topological Hall resistivity.
000181978 6531_ $$ahelimagnetism
000181978 6531_ $$askyrmion lattice
000181978 6531_ $$achiral-cubic
000181978 6531_ $$aneutron scattering
000181978 6531_ $$atopological hall effect
000181978 700__ $$aKanazawa, N.
000181978 700__ $$aKim, J.-H.
000181978 700__ $$aInosov, D. S.
000181978 700__ $$aWhite, J. S.
000181978 700__ $$aEgetenmeyer, N.
000181978 700__ $$aGavilano, J. L.
000181978 700__ $$aIshiwata, S.
000181978 700__ $$aOnose, Y.
000181978 700__ $$aArima, T.
000181978 700__ $$aKeimer, B.
000181978 700__ $$aTokura, Y.
000181978 773__ $$j86$$q134425$$tPhysical Review B
000181978 909C0 $$0252200$$pLQM$$xU11706
000181978 909CO $$ooai:infoscience.tind.io:181978$$pSB$$particle
000181978 917Z8 $$x212499
000181978 937__ $$aEPFL-ARTICLE-181978
000181978 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000181978 980__ $$aARTICLE