Orbital magnetism in disordered mesoscopic metals

The theory of orbital magnetism in disordered metals is reviewed and extend ed to include a broad range of temperatures and fields. Sample-to-sample fl uctuations in the orbital magnetic susceptibility are studied. In a given s ample these fluctuations manifest themselves in aperiodic sample-specific o scillations of susceptibility and magnetization, when the strength of the m agnetic field is changed.