Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Wouter Beugeling"'
Autor:
Li‐Xian Wang, Wouter Beugeling, Fabian Schmitt, Lukas Lunczer, Julian‐Benedikt Mayer, Hartmut Buhmann, Ewelina M. Hankiewicz, Laurens W. Molenkamp
Publikováno v:
Advanced Science, Vol 11, Iss 19, Pp n/a-n/a (2024)
Abstract The band inversion of topological materials in three spatial dimensions is intimately connected to the parity anomaly of 2D massless Dirac fermions, known from quantum field theory. At finite magnetic fields, the parity anomaly reveals itsel
Externí odkaz:
https://doaj.org/article/a4bd35ca2729427a9ce0c504a6f20b6f
Autor:
Saquib Shamim, Pragya Shekhar, Wouter Beugeling, Jan Böttcher, Andreas Budewitz, Julian-Benedikt Mayer, Lukas Lunczer, Ewelina M. Hankiewicz, Hartmut Buhmann, Laurens W. Molenkamp
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)
The quantum spin Hall effect disappears at high magnetic fields when the band inversion is lifted. The authors demonstrate that in contrast, in disordered samples, counter-propagating topological and quantum Hall edge channels prevent the detection o
Externí odkaz:
https://doaj.org/article/049748c607b643b38505fc68e890857c
Autor:
Saquib Shamim, Wouter Beugeling, Pragya Shekhar, Kalle Bendias, Lukas Lunczer, Johannes Kleinlein, Hartmut Buhmann, Laurens W. Molenkamp
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
The quantum spin Hall effect is expected not to survive the presence of magnetic impurities. Here, authors report full quantization at very low temperatures in HgTe quantum wells alloyed with a few percent of magnetic Mn atoms, due to Kondo screening
Externí odkaz:
https://doaj.org/article/0ad6a021e1324eeea717ef9f729304a8
Autor:
David M. Mahler, Valentin L. Müller, Laurens W. Molenkamp, Cornelius Thienel, Wouter Beugeling, Jonas Wiedenmann, Hartmut Buhmann
Publikováno v:
Nano Letters
Magneto-transport measurements on gated high mobility heterostructures containing a 60 nm layer of tensile strained HgTe, a three-dimensional topological insulator, show well-developed Hall quantization from surface states both in the n- as well as i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47f8d69e3b4092cdf9f5cffd006c9b99
https://doi.org/10.1021/acs.nanolett.1c02456
https://doi.org/10.1021/acs.nanolett.1c02456
Autor:
Raphael C. Vidal, Giovanni Marini, Lukas Lunczer, Simon Moser, Lena Fürst, Julia Issing, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, Charles Gould, Hartmut Buhmann, Wouter Beugeling, Giorgio Sangiovanni, Domenico Di Sante, Gianni Profeta, Laurens W. Molenkamp, Hendrik Bentmann, Friedrich Reinert
HgTe is a versatile topological material and has enabled the realization of a variety of topological states, including two- and three-dimensional (3D) topological insulators and topological semimetals. Nevertheless, a quantitative understanding of it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13de04eb1334c1c5f53266f7450b4ffb
Autor:
Saquib Shamim, Pragya Shekhar, Wouter Beugeling, Jan Böttcher, Andreas Budewitz, Julian-Benedikt Mayer, Lukas Lunczer, Ewelina M. Hankiewicz, Hartmut Buhmann, Laurens W. Molenkamp
Publikováno v:
Nature Communications
The survival of the quantum spin Hall edge channels in presence of an external magnetic field has been a subject of experimental and theoretical research. The inversion of Landau levels that accommodates the quantum spin Hall effect is destroyed at a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87307344c886bb4bf751e423596c7277
https://pubmed.ncbi.nlm.nih.gov/35562333
https://pubmed.ncbi.nlm.nih.gov/35562333
Autor:
Björn Trauzettel, M. AbdelGhany, Oleksiy Kashuba, Laurens W. Molenkamp, Johannes Kleinlein, Yuan Yan, Hartmut Buhmann, Wouter Beugeling, Valentin L. Müller
Publikováno v:
Nano Letters
We have experimentally investigated the effect of electron temperature on transport in the two-dimensional Dirac surface states of the three-dimensional topological insulator HgTe. We have found that around the minimal conductivity point, where both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1dee7d7f06bcc601aa913a857770a1e
http://arxiv.org/abs/2106.03435
http://arxiv.org/abs/2106.03435
Autor:
Wouter Beugeling
The quantum spin Hall effect arises due to band inversion in topological insulators, and has the defining characteristic that it hosts helical edge channels at zero magnetic field, leading to a finite spin Hall conductivity. The spin Hall conductivit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4273263c8f438f934207c0f6ffcb61c0
Autor:
Pragya Shekhar, Johannes Kleinlein, Niccolò Traverso Ziani, Lukas Lunczer, Jonas Wiedenmann, C. Fleckenstein, Hartmut Buhmann, Jonas Strunz, Wouter Beugeling, Björn Trauzettel, Valentin L. Müller, Laurens W. Molenkamp, Saquib Shamim
Publikováno v:
Nature Physics
Electrical currents in a quantum spin Hall insulator are confined to the boundary of the system. The charge carriers behave as massless relativistic particles whose spin and momentum are coupled to each other. Although the helical character of those
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd921edbee0523030cbce60987aa9d91
Autor:
Hartmut Buhmann, Valentin L. Müller, Wouter Beugeling, Laurens W. Molenkamp, Niccoló Traverso Ziani, Björn Trauzettel, Johannes Kleinlein, Lukas Lunczer, Jonas Strunz, Pragya Shekhar, C. Fleckenstein, Jonas Wiedenmann, Saquib Shamim
Publikováno v:
Nature Physics. 17:143-143
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54a0db624cf2b6b41ac95d4358505c8a
https://doi.org/10.1038/s41567-020-01091-1
https://doi.org/10.1038/s41567-020-01091-1