Details

Autor(en) / Beteiligte

• Grigoriev, S V
• Chernyshov, D
• Dyadkin, V A
• Dmitriev, V
• Maleyev, S V
• Moskvin, E V
• Menzel, D
• Schoenes, J
• Eckerlebe, H

Titel

Crystal handedness and spin helix chirality in Fe1-xCoxSi

Ist Teil von

• Physical review letters, 2009-01, Vol.102 (3), p.037204-037204

Ort / Verlag

United States

Erscheinungsjahr

2009

Quelle

PROLA

Beschreibungen/Notizen

• We show, with the help of polarized neutrons, that the cubic magnets Fe1-xCoxSi with Dzyaloshinskii-Moriya interaction can be switched between left (for x=0.1, 0.15) and right (for x=0.2, 0.25, 0.3, 0.5) chiral states of the spin helix. The absolute structure was evaluated using x-ray diffraction. The crystals are shown to be enantiopure and the structural chirality changes from right handed for x<0.2 to left handed for x>0.2. These compounds are compared with the etalon sample of MnSi which is identified as having the left-handed chirality both in the magnetic and crystallographic sense.