Possible Magnetic Chirality in Optically Chiral Magnet [Cr(CN)$_6$][Mn($S$)-pnH(H$_2$O)](H$_2$O) Probed by Muon Spin Rotation and Relaxation

摘要

Local magnetic fields in a molecule-based optically chiral magnet[Cr(CN)$_6$][Mn($S$)-pnH(H$_2$O)](H$_2$O) (GN-S) and its enantiomer (GN-R) arestudied by means of muon spin rotation and relaxation (muSR). Detailed analysisof muon precession signals under zero field observed below T_c supports theaverage magnetic structure suggested by neutron powder diffraction. Moreover,comparison of muSR spectra between GN-S and GN-R suggests that they are a pairof complete optical isomers in terms of both crystallographic and magneticstructure. Possibility of magnetic chirality in such a pair is discussed.