CaF<Subscript>2</Subscript> crystals doped with various concentrations of PbF<Subscript>2</Subscript> (0.4, 0.5, 1 and 2 mol%) were grown in vacuum, in a shaped graphite furnace using the vertical Bridgman method. The optical absorption spectra reveal the four characteristic UV absorption bands (labeled A, B, C and D) of the Pb<Superscript>2+</Superscript> ions. As...</superscript></subscript></subscript>

This paper investigates an anisotropy of the adiabatic relaxation time T <Subscript>2</Subscript>′ for single crystalline bcc <Superscript>3</Superscript>He. No difference in the calculation of T <Subscript>1</Subscript>(0) was revealed between the nearest-neighbor anti-ferromagnetic Heisenberg model and the multiple exchange model. However, we may distinguish...</subscript></superscript></subscript>

Crystal structural stability of V<Subscript>2</Subscript>O<Subscript>3</Subscript> under high pressure has been investigated by first-principles calculations. Our results demonstrate that the phase-transition sequence of V<Subscript>2</Subscript>O<Subscript>3</Subscript> is from corundum structure to Gd<Subscript>2</Subscript>S<Subscript>3</Subscript>-type structure at 30 GPa, then to the Th<Subscript>2</Subscript>S<Subscript>3</Subscript>-type structure at 52 GPa, finally to...</subscript></subscript></subscript></subscript></subscript></subscript></subscript></subscript>

The paper realizes a topological superconductor (TSC) in correlated topological insulator – the interacting spinful Haldane model. The electrons on the Haldane model with on-site attractive interaction are studied based on mean field theory and random-phase-approximation (RPA) approach. In the...

We present a multi-purpose scanning magneto-optical microscope for the investigation of magnetic thin films. The setup can be used for both static and time-resolved (pump-probe) measurements. It is moreover compatible with samples with arbitrary magnetic anisotropy, as it allows Kerr...

We study the CoO/Ni interface by first principles calculations. Because the lattice mismatch is large, a realistic description requires a huge supercell. We investigate two interface configurations: in interface 1 the coupling between the Ni and Co atoms is mediated by O, whereas in...

We present a total energy study of the electronic properties of the rhombohedral γ-InSe, hexagonal ε-GaSe, and monoclinic GaTe layered compounds. The calculations have been done using the full potential linear augmented plane wave method, including spin-orbit interaction. The calculated...

The Ru-Ru spin-singlet formation in La<Subscript>2 − x </Subscript> L n <Subscript> x </Subscript>RuO<Subscript>5</Subscript> (Ln=Pr, Nd, Sm, Gd, Dy) was investigated by measurements of the specific heat and magnetic susceptibility. After subtraction of the lattice contribution from the specific heat (C <Subscript> p </Subscript>), similar excess entropy values were obtained for...</subscript></subscript></subscript></subscript>

We address the problem of the Fermi surface renormalization and the quantum confinement regime (QCR) in the two coupled chains model (TCCM) of spinless fermions. We perform a self-consistent calculation of the renormalization group (RG) flows of the renormalized TCCM couplings and quasiparticle...

Using first-principles calculation, we have studied the properties of a series of M<Subscript> x </Subscript>Co<Subscript>1−x </Subscript>/Co(0001) (M=Pd, Pt) bimetallic surface alloys with atom M ratios from 0.25 to 1.0, then the effect of alloyed M metal on the properties of S adsorbed on these surfaces are discussed. Our calculations...</subscript></subscript>