"Electronic bottleneck effect" in Cu:Er system
Al'tshuler T.S., Zaripov M.M., Kukovitskii E.F., Khaimovich E.P., Kharakhash'yan E.G.
An "electronic bottleneck effect" of two spin subsystems coupled by exchange interaction (conduction electrons and localized magnetic moments), with significantly different g factors, was observed in single crystals of copper doped with paramagnetic erbium.