Bi1Te1 is a dual topological insulator

Autor: Markus Eschbach, Martin Lanius, Chengwang Niu, Ewa Młyńczak, Pika Gospodarič, Jens Kellner, Peter Schüffelgen, Mathias Gehlmann, Sven Döring, Elmar Neumann, Martina Luysberg, Gregor Mussler, Lukasz Plucinski, Markus Morgenstern, Detlev Grützmacher, Gustav Bihlmayer, Stefan Blügel, Claus M. Schneider

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)

Coexistence of a topological insulator phase and a topological crystalline insulator phase helps to maintain topological properties under a controlled symmetry breaking perturbation. Here, Eschbacket al. report a superlattice of Bi and Bi2Te3to be su

Externí odkaz: https://doaj.org/article/39ed1759900149d9b90882de2509cd31

Exploring the subsurface atomic structure of the epitaxially grown phase-change material Ge2Sb2Te5

Autor: Richard Dronskowski, R. Calarco, Christian Pauly, Volker L. Deringer, Gustav Bihlmayer, Marcus Liebmann, Jens Kellner, Jos E. Boschker, Alessandro Giussani, Markus Morgenstern

Publikováno v: Physical Review B. 96

Scanning tunneling microscopy (STM) and spectroscopy (STS) in combination with density functional theory (DFT) calculations are employed to study the surface and subsurface properties of the metastable phase of the phase-change material Ge2Sb2Te5 as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc2ad72b8f3ff46d2eeca2a25f21d9d8
https://doi.org/10.1103/physrevb.96.245408

Mapping the band structure of GeSbTe phase change alloys around the Fermi level

Autor: Thomas Fauster, E. Golias, Sebastian Otto, Valeria Bragaglia, Raffaella Calarco, Jens Kellner, Stefano Cecchi, Volker L. Deringer, Rui Ning Wang, Gustav Bihlmayer, Oliver Rader, Jaime Sánchez-Barriga, Marcus Liebmann, Richard Dronskowski, Markus Morgenstern, Christian Pauly, Jos E. Boschker, Priyamvada Bhaskar, Philipp Küppers

Publikováno v: Communications Physics 1(1), 5 (2018). doi:10.1038/s42005-018-0005-8
Communications Physics, Vol 1, Iss 1, Pp 1-11 (2018)

Phase change alloys are used for non-volatile random access memories exploiting the conductivity contrast between amorphous and metastable, crystalline phase. However, this contrast has never been directly related to the electronic band structure. He

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7bb8ac2636f9986fb1d98096b5389fc

Giant Rashba-Type Spin Splitting in Ferroelectric GeTe(111)

Autor: Markus Morgenstern, Ivana Vobornik, Christian Rinaldi, Jos E. Boschker, Marco Asa, Rui Ning Wang, Silvia Picozzi, Alessandro Giussani, Lorenzo Baldrati, Oliver Rader, Stefano Bertoli, Marcus Liebmann, Riccardo Bertacco, Jens Kellner, Raffaella Calarco, Christian Pauly, Domenico Di Sante, Giancarlo Panaccione, Matteo Cantoni, Jaime Sánchez-Barriga, Dmitry Marchenko

Publikováno v: Advanced materials (Weinh., Print) 28 (2016): 560–565. doi:10.1002/adma.201503459
info:cnr-pdr/source/autori:Liebmann M.; Rinaldi C.; Di Sante D.; Kellner J.; Pauly C.; Wang R.N.; Boschker J.E.; Giussani A.; Bertoli S.; Cantoni M.; Baldrati L.; Asa M.; Vobornik I.; Panaccione G.; Marchenko D.; Sanchez-Barriga J.; Rader O.; Calarco R.; Picozzi S.; Bertacco R.; Morgenstern M./titolo:Giant Rashba-Type Spin Splitting in Ferroelectric GeTe(111)/doi:10.1002%2Fadma.201503459/rivista:Advanced materials (Weinh., Print)/anno:2016/pagina_da:560/pagina_a:565/intervallo_pagine:560–565/volume:28

Photoelectron spectroscopy in combination with piezoforce microscopy reveals that the helicity of Rashba bands is coupled to the nonvolatile ferroelectric polarization of GeTe(111). A novel surface Rashba band is found and fingerprints of a bulk Rash

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c621442aef67b272a86e0487ff606824
https://publications.cnr.it/doc/373257

Tuning the Dirac point to the Fermi level in the ternary topological insulator (Bi$_{1-x}$Sb$_{x}$)$_{2}$Te$_{3}$

Autor: Detlev Grützmacher, Jens Kellner, Marcus Liebmann, Lukasz Plucinski, Martin Lanius, Ewa Mlynczak, Bernhard Holländer, Gregor Mussler, Markus Morgenstern, Markus Eschbach, Claus M. Schneider, J. Kampmeier

In order to stabilize Majorana excitations within vortices of proximity induced topological superconductors, it is mandatory that the Dirac point matches the Fermi level rather exactly, such that the conventionally confined states within the vortex a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0c8683c2491b488d1e1cb73c4a744e3