Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Saquib Shamim"'
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:
Pragya Shekhar, Saquib Shamim, Simon Hartinger, Raimund Schlereth, Volkmar Hock, Hartmut Buhmann, Johannes Kleinlein, Laurens W. Molenkamp
Publikováno v:
ACS applied materialsinterfaces.
We present a novel low-temperature (30
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::979a6a72bbdc9c2b0688bbb771c08536
https://pubmed.ncbi.nlm.nih.gov/35820660
https://pubmed.ncbi.nlm.nih.gov/35820660
Publikováno v:
Advanced materials (Deerfield Beach, Fla.).
As quantum technologies develop, a specific class of electrically conducting materials is rapidly gaining interest because they not only form the core quantum-enabled elements in superconducting qubits, semiconductor nanostructures, or sensing device
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9e80174d1e6ce76c85c25a7019fb6f5
https://pubmed.ncbi.nlm.nih.gov/35545231
https://pubmed.ncbi.nlm.nih.gov/35545231
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
Publikováno v:
Memorial Volume for Shoucheng Zhang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34da0eec9a7f7582028dc0f7217f820f
https://doi.org/10.1142/9789811231711_0011
https://doi.org/10.1142/9789811231711_0011
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:
Oliver Herrmann, Andreas Budewitz, Philipp Leubner, Saquib Shamim, E. Bocquillon, Johannes Kleinlein, Laurens W. Molenkamp, Pragya Shekhar, Hartmut Buhmann, Kalle Bendias
Publikováno v:
Nano Letters. 18:4831-4836
The topic of two-dimensional topological insulators has blossomed after the first observation of the quantum spin Hall (QSH) effect in HgTe quantum wells. However, studies have been hindered by the relative fragility of the edge states. Their stabili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fcaff4763178f46878f265e437988d9
https://doi.org/10.1021/acs.nanolett.8b01405
https://doi.org/10.1021/acs.nanolett.8b01405
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
Autor:
Harshit Dubey, T. Phanindra Sai, Kimberly Hsieh, Tanweer Ahmed, Kallol Roy, Saquib Shamim, Ranjit V. Kashid, Arindam Ghosh, Shruti Maliakal
Publikováno v:
Advanced materials (Deerfield Beach, Fla.). 30(2)
Van der Waals hybrids of graphene and transition metal dichalcogenides exhibit an extremely large response to optical excitation, yet counting of photons with single-photon resolution is not achieved. Here, a dual-gated bilayer graphene (BLG) and mol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8434ed170b5876b3c4ed489b29638fc
https://pubmed.ncbi.nlm.nih.gov/29164707
https://pubmed.ncbi.nlm.nih.gov/29164707