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We report on the epitaxial fabrication and electronic properties of a topological phase in strained α-Sn on InSb. The topological surface state forms in the presence of an unusual band order not based on direct spin-orbit coupling, as shown in density functional and GW slab-layer calculations. Angle-resolved photoemission including spin detection probes… (More)

- D Wortmann, S Heinze, P Kurz, G Bihlmayer, S Blügel
- Physical review letters
- 2001

The spin-polarized scanning tunneling microscope (SP-STM) operated in the constant current mode is proposed as a powerful tool to investigate complex atomic-scale magnetic structures of otherwise chemically equivalent atoms. The potential of this approach is demonstrated by successfully resolving the magnetic structure of Cr/Ag(111), which is predicted on… (More)

- Mario Berljafa, Daniel Wortmann, Edoardo Di Napoli
- Concurrency and Computation: Practice and…
- 2015

In many scientific applications the solution of non-linear differential equations are obtained through the setup and solution of a number of successive eigenproblems. These eigenproblems can be regarded as a sequence whenever the solution of one problem fosters the initialization of the next. In addition, some eigenproblem sequences show a connection… (More)

- M Bowen, J-L Maurice, +13 authors P H Dederichs
- Journal of physics. Condensed matter : an…
- 2007

A half-metal has been defined as a material with propagating electron states at the Fermi energy only for one of the two possible spin projections, and as such has been promoted as an interesting research direction for spin electronics. This review details recent advances on manganite thin film research within the field of spintronics, before presenting the… (More)

- Mohammed Bouhassoune, Bernd Zimmermann, +4 authors Samir Lounis
- Nature communications
- 2014

Electrons mediate many of the interactions between atoms in a solid. Their propagation in a material determines its thermal, electrical, optical, magnetic and transport properties. Therefore, the constant energy contours characterizing the electrons, in particular the Fermi surface, have a prime impact on the behaviour of materials. If anisotropic, the… (More)

- Chengwang Niu, Patrick M Buhl, Gustav Bihlmayer, Daniel Wortmann, Stefan Blügel, Yuriy Mokrousov
- Nano letters
- 2015

The properties that distinguish topological crystalline insulator (TCI) and topological insulator (TI) rely on crystalline symmetry and time-reversal symmetry, respectively, which encodes different bulk and surface/edge properties. Here, we predict theoretically that electron-doped TlM (M = S and Se) (110) monolayers realize a family of two-dimensional (2D)… (More)

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