80 citations · 446 across the 23 of their papers we have counts for
23 papers
Weyl Semimetallic Phase in High Pressure CrSb and Structural Compression Studies of its High Pressure Polymorphs
Carl Jonas Linnemann, Emma Ehrenreich-Petersen, Davide Ceresoli +4
In this study, high pressure synchrotron powder X-ray diffraction is used to investigate the compression of two high pressure polymorphs of \ce{CrSb2}. The first is the \ce{CuAl2}-…
Charge density wave-generated Fermi surfaces in NdTe
Alla Chikina, Henriette Lund, Marco Bianchi +7
The electronic structure of NdTe in the charge density wave phase (CDW) is investigated by angle-resolved photoemission spectroscopy. The combination of high-quality crystals a…
One-dimensional electronic states in a natural misfit structure
Alla Chikina, Gargee Bhattacharyya, Davide Curcio +7
Misfit compounds are thermodynamically stable stacks of two-dimensional materials, forming a three-dimensional structure that remains incommensurate in one direction parallel to th…
Fermi surface and nested magnetic breakdown in WTe2
J. F. Linnartz, C. S. A. Müller, Yu-Te Hsu +4
We report a detailed Shubnikov-de Haas (SdH) study on the Weyl type-II semimetal WTe2 in magnetic fields up to 29 T. By using the SdH results to guide our density functional theory…
Observation of Dirac Charge Density Waves in BiTeSe
Adrian Ruckhofer, Giorgio Benedek, Martin Bremholm +2
While parallel segments in the Fermi level contours, often found at the surfaces of topological insulators (TIs) would imply "strong" nesting conditions, the existence of charge de…
Bulk band structure of SbTe determined by angle-resolved photoemission spectroscopy
Henriette E. Lund, Klara Volckaert, Paulina Majchrzak +4
The bulk band structure of the topological insulator \sbte~ is investigated by angle-resolved photoemission spectroscopy. Of particular interest is the dispersion of the uppermost…
Disorder-induced time effect in the antiferromagnetic domain state of Fe1+yTe
Jan Fikáček, Jonas Warmuth, Fabian Arnold +8
We report on temperature-dependent soft X-ray absorption spectroscopy (XAS) measurements utilizing linearly polarized synchrotron radiation to probe magnetic phase transitions in i…
THz Surface Modes and Electron-Phonon Coupling in BiSe(111)
Adrian Ruckhofer, Davide Campi, Martin Bremholm +5
We present a combined experimental and theoretical study of the surface vibrational modes of the topological insulator (TI) BiSe with particular emphasis on the low-energy…
Computational search for Dirac and Weyl nodes in -electon antiperovskites
Anna Pertsova, R. Matthias Geilhufe, Martin Bremholm +1
We present the result of an \textit{ab initio} search for new Dirac materials among inverse perovskites. Our investigation is focused on the less studied class of lanthanide antipe…
Novel single-layer vanadium sulphide phases
Fabian Arnold, Raluca-Maria Stan, Sanjoy K. Mahatha +15
VS2 is a challenging material to prepare stoichiometrically in the bulk, and the single layer has not been successfully isolated before now. Here we report the first realization of…
Nanoscale Surface Dynamics of BiTe(111): Observation of a Prominent Surface Acoustic Wave and the Role of van der Waals Interactions
Anton Tamtögl, Davide Campi, Martin Bremholm +8
We present a combined experimental and theoretical study of the surface vibrational modes of the topological insulator BiTe. Using high-resolution helium-3 spin-echo spectr…
A Helium-Surface Interaction Potential of BiTe(111) from Ultrahigh-Resolution Spin-Echo Measurements
Anton Tamtögl, Michael Pusterhofer, Martin Bremholm +7
We have determined an atom-surface interaction potential for the HeBiTe(111) system by analysing ultrahigh resolution measurements of selective adsorption resonances. Th…
Domain imaging across the magneto-structural phase transition in FeTe
Jonas Warmuth, Martin Bremholm, Philip Hofmann +2
The investigation of the magnetic phase transitions in the parent compounds of Fe-based superconductors is regarded essential for an understanding of the pairing mechanism in the r…
Enhanced spin ordering temperature in ultrathin FeTe films grown on a topological insulator
Udai Raj Singh, Jonas Warmuth, Anand Kamlapure +5
We studied the temperature dependence of the diagonal double-stripe spin order in one and two unit cell thick layers of FeTe grown on the topological insulator Bi_2Te_3 via spin-po…
Electronic Structure of FeTe bulk crystals and epitaxial FeTe thin films on BiTe
Fabian Arnold, Jonas Warmuth, Matteo Michiardi +12
The electronic structure of thin films of FeTe grown on BiTe is investigated using angle-resolved photoemission spectroscopy, scanning tunneling microscopy and first princi…
Electron-Phonon Coupling and Surface Debye Temperature of BiTe(111) from Helium Atom Scattering
Anton Tamtögl, Patrick Kraus, Nadav Avidor +9
We have studied the topological insulator BiTe(111) by means of helium atom scattering. The average electron-phonon coupling of BiTe(111) is determined by adapt…
Experimental evidence for pressure-induced first order transition in cerium nitride from B1 to B10 structure type
Morten B. Nielsen, Davide Ceresoli, Jens-Erik Jørgensen +3
The crystal structure of CeN was investigated up to pressures of 82 GPa, using diamond anvil cell powder X-ray diffraction in two experiments with He and Si-oil as the pressure tra…
Evidence for a two-fold symmetric superconducting gap in a monolayer of FeSeTe on a topological insulator
Anand Kamlapure, Sujit Manna, Lasse Cornils +5
We present our investigations on the superconducting properties of monolayers of FeSeTe grown on the 3D topological insulator BiSeTe using low…
Reorientation of the bicollinear antiferromagnetic structure at the surface of FeTe bulk and thin films
Torben Hänke, Udai Raj Singh, Lasse Cornils +10
Establishing the relation between the ubiquitous antiferromagnetism in the non-superconducting parent compounds of unconventional superconductors and their superconducting phase is…
Evidence for interfacial superconductivity in a bi-collinear antiferromagnetically ordered FeTe monolayer on a topological insulator
Sujit Manna, Anand Kamlapure, Lasse Cornils +7
The discovery of high-temperature superconductivity in Fe-based compounds [1,2] has triggered numerous investigations on the interplay between superconductivity and magnetism [3] a…
Absence of superconductivity in ultra-thin layers of FeSe synthesized on a topological insulator
Andreas Eich, Nils Rollfing, Fabian Arnold +10
The structural and electronic properties of FeSe ultra-thin layers on BiSe have been investigated with a combination of scanning tunneling microscopy and spectroscopy a…
Strongly anisotropic spin-orbit splitting in a two-dimensional electron gas
Matteo Michiardi, Marco Bianchi, Maciej Dendzik +8
Near-surface two-dimensional electron gases on the topological insulator BiTeSe are induced by electron doping and studied by angle-resolved photoemission spectroscopy. A p…
Direct Measurement of Surface Transport on a Bulk Topological Insulator
Lucas Barreto, Lisa Kühnemund, Frederik Edler +7
Topological insulators are guaranteed to support metallic surface states on an insulating bulk, and one should thus expect that the electronic transport in these materials is domin…