Mn 3d partial density of states in Ga12xMnxAs studied by resonant photoemission spectroscopy
نویسندگان
چکیده
We have obtained the Mn 3d partial density of states in Ga12xMnxAs using the resonance photoemission technique as well as by means of the difference between Ga12xMnxAs and GaAs. We have observed a strong satellite structure on the higher binding energy side of the main peak, as in Mn-doped II-VI compounds such as Cd12xMnxTe. Based on analysis using configuration-interaction calculation for a MnAs4 cluster, we could ascribe the spectral features to strong Mn 3d-As 4p hybridization and Mn 3d-3d Coulomb interaction. @S0163-1829~99!50904-1#
منابع مشابه
Resonant photoemission of Ga 1 À x Mn x As at the Mn L edge
Ga12xMnxAs, x50.043, has been grown ex situ on GaAs~100! by low-temperature molecular-beam epitaxy. On the reprepared p(131) surface, resonant photoemission of the valence band shows a 20-fold enhancement of the Mn 3d contribution at the L3 edge. The difference spectrum is similar to our previously obtained resonant photoemission at the Mn M edge, in particular a strong satellite appears and no...
متن کاملCore-level photoemission study of Ga12xMnxAs
We have studied the electronic structure of Mn impurities in GaAs by Mn 2p core-level photoemission spectroscopy. From cluster-model analysis assuming the neutral (Mn) or negatively ionized (Mn) ground state, electronic structure parameters have been obtained. In either case, the Mn d electron number is evaluated to be ;5 using the obtained parameters, meaning that the neutral Mn impurity, if i...
متن کاملDepth profile high - energy spectroscopic study of Mn - doped GaN prepared by thermal diffusion
We have performed an in-situ depth profile study of Mn-doped GaN prepared by a low temperature thermal diffusion method using photoemission and x-ray absorption spectroscopy. It was revealed from the core-level pho-toemission measurements that Mn ions are diffused into a deep (∼ 70Å) region of the GaN substrates and that the line shapes of Mn 3d partial density of states obtained by resonant ph...
متن کاملIn situ photoemission study of the room temperature ferromagnet ZnGeP2:Mn.
The chemical states of the ZnGeP(2):Mn interface which shows ferromagnetism above room temperature have been studied by photoemission spectroscopy. Mn deposition on the ZnGeP2 substrate heated to 400 degrees C induced Mn substitution for Zn and then the formation of metallic Mn-Ge-P compounds. Depth profile studies have shown that Mn 3d electrons changed their character from itinerant to locali...
متن کاملExperimental evidence for the p-d hybridization in the Cd-Ca quasicrystal: origin of the pseudogap.
Ca 2p-3d resonant photoemission spectroscopy of a Cd6Ca crystalline approximant unambiguously demonstrates that the low-lying unoccupied 3d levels of calcium are lowered below the Fermi energy by the formation of the approximant, as suggested from electronic structure calculations [Phys. Rev. Lett. 87, 206408 (2001)]]. Moreover, the Ca 3d partial density of states (DOS) obtained near the Fermi ...
متن کامل