Muon-fluorine entangled states in molecular magnets

Phys Rev Lett. 2007 Dec 31;99(26):267601. doi: 10.1103/PhysRevLett.99.267601. Epub 2007 Dec 27.

Abstract

The information accessible from a muon-spin relaxation experiment can be limited due to a lack of knowledge of the precise muon stopping site. We demonstrate here the possibility of localizing a spin polarized muon in a known stopping state in a molecular material containing fluorine. The muon-spin precession that results from the entangled nature of the muon spin and surrounding nuclear spins is sensitive to the nature of the stopping site. We use this property to identify three classes of sites that occur in molecular magnets and describe the extent to which the muon distorts its surroundings.