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Silicene on Ag(111): an honeycomb lattice without Dirac bands
Sanjoy Kr. Mahatha, Paolo Moras, Valerio Bellini +4
The discovery of (4x4) silicene formation on Ag(111) raised the question on whether silicene maintains its Dirac fermion character, similar to graphene, on a supporting substrate.…
Magnetic Dirac semimetal state of (Mn,Ge)BiTe
Alexander S. Frolov, Dmitry Yu. Usachov, Artem V. Tarasov +13
For quantum electronics, the possibility to finely tune the properties of magnetic topological insulators (TIs) is a key issue. We studied solid solutions between two isostructural…
Prediction and observation of the first antiferromagnetic topological insulator
Mikhail M. Otrokov, Ilya I. Klimovskikh, Hendrik Bentmann +41
Magnetic topological insulators (MTIs) are narrow gap semiconductor materials that combine non-trivial band topology and magnetic order. Unlike their nonmagnetic counterparts, MTIs…
On the interpretation of valence band photoemission spectra at organic-metal interfaces
L. Giovanelli, F. C. Bocquet, P. Amsalem +14
Adsorption of organic molecules on well-oriented single crystal coinage metal surfaces fundamentally affects the energy distribution curve of ultra-violet photoelectron spectroscop…
The order-disorder character of the (3x3) to (sqrt3 x sqrt3)R30° phase transition of Sn on Ge(111)
L. Petaccia, L. Floreano, A. Goldoni +7
Growing attention has been drawn in the past years to the α-phase (1/3 monolayer) of Sn on Ge(111), which undergoes a transition from the low temperature (3x3) phase to the room te…