17 research outputs found
Electronic structure and x-ray magnetic circular dichroism in uranium monochalcogenides
The electronic structure and x-ray magnetic circular dichroism (XMCD) spectra of US, USe,
and UTe are investigated theoretically from first principles, using the fully relativistic Dirac
LMTO band structure method. The electronic structure is obtained with the local spin-density approximation
(LSDA), as well as with a generalization of the LSDA+U method which takes into account
that in the presence of spin–orbit coupling the occupation matrix of localized electrons becomes
non-diagonal in spin indexes. The origin of the XMCD spectra in the compounds is
examined
Low thermal gradient Czochralski growth of large MWO4 (M = Zn, Cd) crystals, and microstructural and electronic properties of the (010) cleaved surfaces
The large optical-quality MWO4 (M = Zn, Cd) crystals of mass up to 14 (ZnWO4) and 20 (CdWO4) kg were grown by Low Thermal Gradient Czochralski Technique (LTG Cz). Crystallographic properties of MWO4(010) cleaved surface were evaluated by AFM and RHEED, and electronic structure of the surface was studied using XPS. A system of Kikuchi lines has been observed for cleaved MWO4(010) by RHEED confirming high crystallographic quality of the surface. The XPS valence-band and core-level spectra of MWO4(010) have been measured. The XPS measurements reveal that W and M atoms are in the formal valences 6+ and 2+, respectively, on cleaved MWO4(010) surface
Electronic structure and x-ray magnetic circular dichroism in uranium compounds. II. UTAl (T=Co, Rh, and Pt) intermetallics
Self-consistent calculation of the electron structure and X-ray spectra of chromium nitride
Electronic structure and x-ray magnetic circular dichroism in uranium monochalcogenides
The electronic structure and x-ray magnetic circular dichroism (XMCD) spectra of US, USe,
and UTe are investigated theoretically from first principles, using the fully relativistic Dirac
LMTO band structure method. The electronic structure is obtained with the local spin-density approximation
(LSDA), as well as with a generalization of the LSDA+U method which takes into account
that in the presence of spin–orbit coupling the occupation matrix of localized electrons becomes
non-diagonal in spin indexes. The origin of the XMCD spectra in the compounds is
examined
Low thermal gradient Czochralski growth of large MWO4 (M = Zn, Cd) crystals, and microstructural and electronic properties of the (010) cleaved surfaces
The large optical-quality MWO4 (M = Zn, Cd) crystals of mass up to 14 (ZnWO4) and 20 (CdWO4) kg were grown by Low Thermal Gradient Czochralski Technique (LTG Cz). Crystallographic properties of MWO4(010) cleaved surface were evaluated by AFM and RHEED, and electronic structure of the surface was studied using XPS. A system of Kikuchi lines has been observed for cleaved MWO4(010) by RHEED confirming high crystallographic quality of the surface. The XPS valence-band and core-level spectra of MWO4(010) have been measured. The XPS measurements reveal that W and M atoms are in the formal valences 6+ and 2+, respectively, on cleaved MWO4(010) surface