Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Wojek, B. M."'
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 of the photoemitted electrons. The technique therefore allows for mapp
Externí odkaz:
http://arxiv.org/abs/2205.03063
Autor:
Övergaard, T., Wojek, B. M, Leandersson, M., Ohldag, H., Bonetti, S., Wiell, T., Tjernberg, O.
Free-standing ferromagnetic nano-membranes with thicknesses below 10 nm could effectively be used for spin selective filtering of electrons. Such membranes can work both as spin detectors in electron-spectroscopy, -microscopy and -diffraction as well
Externí odkaz:
http://arxiv.org/abs/1709.03838
Autor:
Wojek, B. M., Berntsen, M. H., Jonsson, V., Szczerbakow, A., Dziawa, P., Kowalski, B. J., Story, T., Tjernberg, O.
Publikováno v:
Nature Communications 6, 8463 (2015)
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 accomplish this was opened up by the discovery of topological crystalline ins
Externí odkaz:
http://arxiv.org/abs/1505.03414
Autor:
Wojek, B. M.
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 collected data and the corresponding calculations appear to be partially inc
Externí odkaz:
http://arxiv.org/abs/1502.03226
Publikováno v:
J. Chem. Phys. 140, 174702 (2014)
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 spectroscopy (XAS) and scanning tunneling microscopy (STM). Our results
Externí odkaz:
http://arxiv.org/abs/1404.7832
Autor:
Wojek, B. M., Dziawa, P., Kowalski, B. J., Szczerbakow, A., Black-Schaffer, A. M., Berntsen, M. H., Balasubramanian, T., Story, T., Tjernberg, O.
Publikováno v:
Phys. Rev. B 90, 161202 (2014)
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 materials. Here we systematically study the (001) surface states of Pb{1-
Externí odkaz:
http://arxiv.org/abs/1401.6643
Autor:
Polley, C. M., Dziawa, P., Reszka, A., Szczerbakow, A., Minikayev, R., Domagala, J. Z., Safaei, S., Kacman, P., Buczko, R., Adell, J., Berntsen, M. H., Wojek, B. M., Tjernberg, O., Kowalski, B. J., Story, T., Balasubramanian, T.
Publikováno v:
Phys. Rev. B 89, 075317 (2014)
We present angle resolved photoemission spectroscopy measurements of the surface states on in-situ grown (111) oriented films of Pb$_{1-x}$Sn$_{x}$Se, a three dimensional topological crystalline insulator. We observe surface states with Dirac-like di
Externí odkaz:
http://arxiv.org/abs/1312.3226
Autor:
Stilp, E., Suter, A., Prokscha, T., Morenzoni, E., Keller, H., Wojek, B. M., Luetkens, H., Gozar, A., Logvenov, G., Bozovic, I.
Publikováno v:
Phys. Rev. B 88, 064419 (2013)
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 features as the one of bulk La2-xSrxCuO4, but the transition temperatur
Externí odkaz:
http://arxiv.org/abs/1308.0496
Autor:
Wojek, B. M., Buczko, R., Safaei, S., Dziawa, P., Kowalski, B. J., Berntsen, M. H., Balasubramanian, T., Leandersson, M., Szczerbakow, A., Kacman, P., Story, T., Tjernberg, O.
Publikováno v:
Phys. Rev. B 87, 115106 (2013)
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 trivial state above the band-gap-inversion temperature. Our calculati
Externí odkaz:
http://arxiv.org/abs/1212.1783
Autor:
Wojek, B. M., Berntsen, M. H., Boseggia, S., Boothroyd, A. T., Prabhakaran, D., McMorrow, D. F., Rønnow, H. M., Chang, J., Tjernberg, O.
Publikováno v:
J. Phys.: Condens. Matter 24, 415602 (2012)
The low-energy electronic structure of the J_{eff}=1/2 spin-orbit insulator Sr3Ir2O7 has been studied by means of angle-resolved photoemission spectroscopy. A comparison of the results for bilayer Sr3Ir2O7 with available literature data for the relat
Externí odkaz:
http://arxiv.org/abs/1207.1556