We introduce sulphur isotope engineering for the first time in the transition metal di-chalcogenides family, which enables us to disentangle the crucial role played by phonons in the optoelectronic properties of transition metal di-chalcogenides.
Our in-house characterization of unique pyrochlore heterostructures using X-ray scattering methods contributed to recent work by Jian Liu's research group at the University of Tennessee. They designed and synthesized a pyrochlore heterostructure where the breaking of the spin ice rule and the condensation of magnetic monopole in insulating Dy2Ti2O7 can be detected by anomalous magnetoresistance in the Bi2Ir2O7 conducting layer.
Our group used a unique capability of the X-ray magnetic circular dichroism technique to determine the magnetic orbital moment component of Vanadium ions in the layered van der Waals system. We have revealed an exceptionally sizable orbital moment of Vanadium ion resolving the long debate on this issue.
An electron and a hole can create bound states known as excitons. When these states occur in an atomically thin semiconducter layer, they behave like two-dimensional hydrogen atoms. Well, not exactly. Find more details in our recent paper.
We have succeeded in preparing a new class of layered hybrid materials composed of a single-layer two-dimensional semiconductor and molecular magnets that emit chiral light.
We have organized Czech-Bavarian Mini-school on Large Scale Facilities and Open Data for the second time. The 15 students enjoyed magnetism, crystal growth, beer, collaborations, card games, and unicorns!
Materials called transition metal dichalcogenides can hold electrons in band minimas called valleys. We have investigated the possibility to control these electronic states by light pulses. Find the thorough theoretical analysis in our recent paper!
On December 7, the dean’s prize for the best bachelor thesis was awarded to our user Kateřina (Katka) Tetalová. In her thesis with the title “Morphology and physical properties of misfit layer compound VPbS3“, she focused on the properties of cleaved surfaces and exfoliated flakes. She performed detailed atomic force microscopy (AFM) studies to show the surface stability and the possibility to exfoliate single or few-layer flakes on SiOx and fresh Au surfaces.
The luminescence spectrum of excitons in ReS2 resembles the transitions in a free atom (Rydberg series), except that some transitions are missing, they are “dark”. This is due to interactions, as detailed by the theoretical calculations of A. Slobodenyuk, and verified by measurements in magnetic fields. Find more details in our recent paper.
We welcome Dr. Athanasios Koliogiorgos and wish him a successful post-doctoctoral stay