825 citations · 1.8k across the 18 of their papers we have counts for
9 papers · 1 filter
Accessing the spin structure of buried electronic states
M. H. Berntsen, O. Götberg, B. M. Wojek +1
In spin- and angle-resolved photoemission spectroscopy (SARPES) the energy-momentum dispersion of electronic states in crystalline solids is measured along with the spin direction…
Direct observation and temperature control of the surface Dirac gap in the topological crystalline insulator (Pb,Sn)Se
B. M. Wojek, M. H. Berntsen, V. Jonsson +5
Since the advent of topological insulators hosting symmetry-protected Dirac surface states, efforts have been made to gap these states in a controllable way. A new route to accompl…
Comment on "Probing two- and three-dimensional electrons in MgB2 with soft x-ray angle-resolved photoemission"
B. M. Wojek
A recent article by Sassa et al. [Phys. Rev. B 91, 045114 (2015)] reports on a soft x-ray angle-resolved photoemission study of MgB2. The analysis and/or presentation of the collec…
Site-dependent charge transfer at the Pt(111)-ZnPc interface and the effect of iodine
S. Ahmadi, B. Agnarsson, I. Bidermane +4
The electronic structure of ZnPc, from sub-monolayers to thick films, on bare and iodated Pt(111) is studied by means of X-ray photoelectron spectroscopy (XPS), X-ray absorption sp…
On the nature of the band inversion and the topological phase transition in (Pb,Sn)Se
B. M. Wojek, P. Dziawa, B. J. Kowalski +6
The recent discovery of a topological phase transition in IV-VI narrow-gap semiconductors has revitalized the decades-old interest in the bulk band inversion occurring in these mat…
Magnetic phase diagram of low-doped La{2-x}SrxCuO4 thin films studied by low-energy muon-spin rotation
E. Stilp, A. Suter, T. Prokscha +7
The magnetic phase diagram of La2-xSrxCuO4 thin-films grown on single-crystal LaSrAlO4 substrates has been determined by low-energy muon-spin rotation. The diagram shows the same f…
Spin-polarized (001) surface states of the topological crystalline insulator Pb_{0.73}Sn_{0.27}Se
B. M. Wojek, R. Buczko, S. Safaei +9
We study the nature of (001) surface states in Pb_{0.73}Sn_{0.27}Se in the newly discovered topological-crystalline-insulator (TCI) phase as well as the corresponding topologically…
Direct observation of decoupled Dirac states at the interface between topological and normal insulators
M. H. Berntsen, O. Götberg, B. M. Wojek +1
Several proposed applications and exotic effects in topological insulators rely on the presence of helical Dirac states at the interface between a topological and a normal insulato…
Topological crystalline insulator states in Pb(1-x)Sn(x)Se
P. Dziawa, B. J. Kowalski, K. Dybko +9
Topological insulators are a novel class of quantum materials in which time-reversal symmetry, relativistic (spin-orbit) effects and an inverted band structure result in electronic…