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Skyrmion Lattice in a Doped Semiconductor
W. Münzer, A. Neubauer, S. Mühlbauer +9
We report a comprehensive small angle neutron scattering study (SANS) of the magnetic phase diagram of the doped semiconductor Fe_{1-x}Co_{x}Si for x=0.2 and 0.25. For magnetic fie…
Large violation of Wiedemann Franz law in Luttinger liquids
Arti Garg, David Rasch, Efrat Shimshoni +1
We show that in weakly disordered Luttinger liquids close to a commensurate filling the ratio of thermal conductivity kappa and electrical conductivity sigma can deviate strongly f…
Skyrmion Lattice in a Chiral Magnet
S. Mühlbauer, B. Binz, F. Jonietz +5
Skyrmions represent topologically stable field configurations with particle-like properties. We used neutron scattering to observe the spontaneous formation of a two-dimensional la…
Topological Hall effect in the A-phase of MnSi
A. Neubauer, C. Pfleiderer, B. Binz +4
Recent small angle neutron scattering suggests, that the spin structure in the A-phase of MnSi is a so-called triple- state, i.e., a superposition of three helices under 120 deg…
Random Field effects in field-driven quantum critical points
Fabrizio Anfuso, Achim Rosch
We investigate the role of disorder for field-driven quantum phase transitions of metallic antiferromagnets. For systems with sufficiently low symmetry, the combination of a unifor…