Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Berntsen 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
Publikováno v:
Phys. Rev. B 97, 125148 (2018)
We study the electronic and spin structures of the giant Rashba-split surface states of the Bi/Si(111)-($\sqrt{3} \times \sqrt{3}$)R30 trimer phase by means of spin- and angle-resolved photoelectron spectroscopy (spin-ARPES). Supported by tight-bindi
Externí odkaz:
http://arxiv.org/abs/1710.06402
Autor:
Matt, Christian E., Fatuzzo, Claudia G., Sassa, Y., Mansson, M., Fatale, S., Bitetta, V., Shi, X., Pailhes, S., Berntsen, M. H., Kurosawa, T., Oda, M., Momono, N., Lipscombe, O. J., Hayden, S. M., Yan, J. -Q., Zhou, J. -S., Goodenough, J. B., Pyon, S., Takayama, T., Takagi, H., Patthey, L., Bendounan, A., Razzoli, E., Shi, M., Plumb, N. C., Radovic, M., Grioni, M., Mesot, J., Tjernberg, O., Chang, J.
Publikováno v:
Phys. Rev. B 92, 134524, (2015)
We report an angle-resolved photoemission study of the charge stripe ordered La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$ system. A comparative and quantitative line shape analysis is presented as the system evolves from the overdoped regime into the charge o
Externí odkaz:
http://arxiv.org/abs/1509.08294
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., 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:
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
Publikováno v:
Phys. Rev. B 88, 195132 (2013)
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 insulator. In the present work, we have used low-energy angle-resolved photoel
Externí odkaz:
http://arxiv.org/abs/1206.4183
Autor:
Dziawa, P., Kowalski, B. J., Dybko, K., Buczko, R., Szczerbakow, A., Szot, M., Łusakowska, E., Balasubramanian, T., Wojek, B. M., Berntsen, M. H., Tjernberg, O., Story, T.
Publikováno v:
Nature Materials 11, 1023-1027 (2012)
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 metallic states on the surfaces of bulk crystals. These helical state
Externí odkaz:
http://arxiv.org/abs/1206.1705