Trigonal manganese cluster in silicon: An electron-paramagnetic-resonance study

Energetic stability and magnetic properties of Mn dimers in silicon

“…Therefore, we predict, in n-type Si, the coexistence of Mn I and Mn Si . As for the charge states of the defects, experimental data available in literature 4 show the existence of charge states from 1Ϫ to 2ϩ for the interstitial impurity, while for the substitutional one the only charge states detected are the 1ϩ and 2Ϫ. Besides a general agreement with experiments, our calculations reveal for the Mn Si the possible existence of a 1Ϫ charge state that was not reported in literature.…”

Room-temperature ferromagnetism and anomalous Hall effect in Si1−xMnx(x≈Аронзон1, Rylkov2, Николаев3 et al. 2011Phys. Rev. B164100View full textAdd to dashboardCite

“…It is known [6] that isolated Mn impurities occupy mainly tetrahedral interstitial positions ( , , , ) in the Si lattice acting as donors [2,3], while a strong hybridization of Mn 3d-states with 4(s,p)-states in Si and an indirect exchange between Mn moments appears if they enter into substitution positions ( , ) as acceptors [2,7] [8]. These phases may exhibit semiconducting, metallic, or halfmetallic behavior [9].…”

EPR investigation of manganese clusters in silicon

“…Up to the present, the isolated interstitial manganese defects Mn i 2ϩ , Mn i ϩ , Mn i 0 , and Mn i Ϫ and the substitutional Mn s ϩ and Mn s 2Ϫ ͑Refs. 1 and 2͒ as well as some complexes with other impurity atoms 3 and two different Mn clusters [4][5][6] have been observed.…”

“…5 Differences between the two groups concerning the effective spin of the center was resolved more recently by Kreissl,Gehlhoff,and Vollmer,6 who demonstrated quite clearly by a comparison between experimental and simulated spectra that Sϭ6 is the only reasonable choice. So far, however, it was not possible to decide whether the cluster is centered around a lattice atom or an empty interstitial site.…”