Electrons are one of the fundamental constituents of solids, responsible for most of the important phenomena and applications in condensed matter physics. Therefore, understanding, controlling and manipulating electronic properties is still one of the great challenges of condensed matter research. An ideal testbed for this endeavour are high-quality two-dimensional [...]
Following the HIMAFUN workshop held in may 2017 in Toulouse, a review article has been published on Physics Report freely availaible here or DOI
Zhe Wang, HZDR and S. Zherlitsyn, HLD Dresden Understanding quantum phase transitions, i.e., phase transitions at zero temperature driven by non-thermal parameters, has become one of the most significant topics in condensed-matter physics. It is generally believed that universal scaling occurs near a quantum critical point, which can be [...]
Sergio Pezzini & Uli Zeitler, HFML Nijmegen Using high magnetic-magnetic fields, the Bloch states in two-dimensional graphene superlattices can be influenced in a way that adding fractions of flux quanta into a superlattice unit cell lead to high temperature quantum oscillations in its resistance. This phenomenon can be explained [...]
Layered materials can realize different stackings of their individual planes, different polytypes, to compose three-dimensional structures. ABA-stacked graphite is the most stable form of graphite at ambient conditions and the study of thin layers of this material have revealed many interesting phenomena related to the change of [...]
Stevan Arsenijevič, HLD-HZDR Dresden and Nigel E. Hussey, HFML Nijmegen The thermoelectric effect (TE) in metals occurs as a voltage difference – accumulated charge – when a thermal gradient is applied. This property can be used to convert heat into electrical energy in power generation and in [...]
We report a 51V nuclear magnetic resonance investigation of the frustrated spin-1/2 chain compound LiCuVO4, performed in pulsed magnetic fields and focused on high-field phases up to 56 T. For the crystal orientations H∥c and H∥b, we find a narrow field region just below the magnetic saturation where [...]
Antiferromagnets (AFMs) have attracted increasing attention in state-of-the-art research. Their important role in enhancing the hardness of ferromagnetic electrodes through the exchange-bias effect in microelectronics, has been broadly extended by new perspectives in spintronic applications. AFMs also facilitate current-induced switching of their order parameter owing to the absence of [...]
Peter Christianen, HFML Nijmegen Single-layer transition-metal dichalcogenides, such as MoS2, MoSe2, WS2, WSe2, are two-dimensional semiconductors with a honeycomb lattice. Their band structures show a pair of inequivalent valleys (local extrema) at the +K and -K points of the Brillouin zone. The valleys in the conduction and valence [...]