Isomorphous Thiosulphates of Divalent Sulphur, Selenium and Tellurium.

Oscillator strengths for neutral selenium and tellurium

Oscillator strengths for excitations of neutral selenium and tellurium from the ground state are calculated using a semiempirical analytic independent-particle-model. The results are compared to experimental and theoretical data.

Weyl Node and Spin Texture in Trigonal Tellurium and Selenium.

We study Weyl nodes in materials with broken inversion symmetry. We find based on first-principles calculations that trigonal Te and Se have multiple Weyl nodes near the Fermi level. The conduction bands have a spin splitting similar to the Rashba splitting around the H points, but unlike the Rashba splitting the spin directions are radial, forming a hedgehog spin texture around the H points, w...

Tellurium and tellurium compounds

Inter- and Intramolecular Interactions between Divalent Selenium Centers

The main topic of our research project is the comparative investigation of the interaction of divalent selenium centers in solids and solution. Therefore we decided to combine experimental and theoretical results in order to gather more insight into selenium – selenium interactions. The idea of using the chalcogen–chalcogen interactions as directional forces to obtain tubular structures was val...

Structural and electronic properties of compressed selenium and tellurium under high pressure

We investigate the mechanisms of the nonmetal-metal transitions of Se and Te induced by the volume compression both in the solid and liquid states by the density functional method. The volume compression increases the band width and the system transforms from nonmetal to metal phase both in the crystalline Se and Te. When the system has structural disorder, the energy of the anti-bonding level ...