TY - JOUR
T1 - Response of the Skyrmion Lattice in MnSi to Cubic Magnetocrystalline Anisotropies
AU - Adams, T.
AU - Garst, M.
AU - Bauer, A.
AU - Georgii, R.
AU - Pfleiderer, C.
N1 - Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/11/2
Y1 - 2018/11/2
N2 - We report high-precision small-angle neutron scattering of the orientation of the Skyrmion lattice in a spherical sample of MnSi under systematic changes of the magnetic field direction. For all field directions the Skyrmion lattice may be accurately described as a triple-Q→ state, where the modulus |Q→| is constant and the wave vectors enclose rigid angles of 120°. Along a great circle across «100», «110», and «111» the normal to the Skyrmion-lattice plane varies systematically by ±3° with respect to the field direction, while the in-plane alignment displays a reorientation by 15° for magnetic field along «100». Our observations are qualitatively and quantitatively in excellent agreement with an effective potential, which is determined by the symmetries of the tetrahedral point group T and includes contributions up to sixth order in spin-orbit coupling, providing a full account of the effect of cubic magnetocrystalline anisotropies on the Skyrmion lattice in MnSi.
AB - We report high-precision small-angle neutron scattering of the orientation of the Skyrmion lattice in a spherical sample of MnSi under systematic changes of the magnetic field direction. For all field directions the Skyrmion lattice may be accurately described as a triple-Q→ state, where the modulus |Q→| is constant and the wave vectors enclose rigid angles of 120°. Along a great circle across «100», «110», and «111» the normal to the Skyrmion-lattice plane varies systematically by ±3° with respect to the field direction, while the in-plane alignment displays a reorientation by 15° for magnetic field along «100». Our observations are qualitatively and quantitatively in excellent agreement with an effective potential, which is determined by the symmetries of the tetrahedral point group T and includes contributions up to sixth order in spin-orbit coupling, providing a full account of the effect of cubic magnetocrystalline anisotropies on the Skyrmion lattice in MnSi.
UR - http://www.scopus.com/inward/record.url?scp=85056127319&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.187205
DO - 10.1103/PhysRevLett.121.187205
M3 - Article
C2 - 30444411
AN - SCOPUS:85056127319
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 187205
ER -