activity
20002025
most citedFirst Observation of Self-Amplified Spontaneous Emission in a Free-Electron Laser at 109 nm Wavelength

376 citations · 1.9k across the 34 of their papers we have counts for

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Showing cond-mat.mes-hallShow all

9 papers · 1 filter

cond-mat.mes-hall2023

Single in situ Interface Characterization Composed of Niobium and a Selectively Grown (BiSb)Te Topological Insulator Nanoribbon

Kevin Janßen, Philipp Rüßmann, Sergej Liberda +14

With increasing attention in Majorana physics for possible quantum bit applications, a large interest has been developed to understand the properties of the interface between a …

cond-mat.mes-hall2018★ 73 cited

Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets

Chengwang Niu, Jan-Philipp Hanke, Patrick M. Buhl +6

The concepts of Weyl fermions and topological semimetals emerging in three-dimensional momentum space are extensively explored owing to the vast variety of exotic properties that t…

cond-mat.mes-hall2017★ 50 cited

Electrical resistance of individual defects at a topological insulator surface

Felix Lüpke, Markus Eschbach, Tristan Heider +10

Three-dimensional topological insulators host surface states with linear dispersion, which manifest as a Dirac cone. Nanoscale transport measurements provide direct access to the t…

cond-mat.mes-hall2016★ 32 cited

Fermi surface manipulation by external magnetic field demonstrated for a prototypical ferromagnet

E. Młyńczak, M. Eschbach, S. Borek +12

We consider the details of the near-surface electronic band structure of a prototypical ferromagnet, Fe(001). Using high resolution angle-resolved photoemission spectroscopy we dem…

cond-mat.mes-hall2015★ 97 cited

Photon Drag Effect in (BiSb)Te Three Dimensional Topological Insulators

H. Plank, L. E. Golub, S. Bauer +10

We report on the observation of a terahertz radiation induced photon drag effect in epitaxially grown - and -type (BiSb)Te three dimensional topolog…

cond-mat.mes-hall2015★ 109 cited

Realization of a vertical topological p-n junction in epitaxial heterostructures

Markus Eschbach, Ewa Mlynczak, Jens Kellner +17

3D topological insulators are a new state of quantum matter which exhibits both a bulk band structure with an insulating energy gap as well as metallic spin-polarized Dirac fermion…

cond-mat.mes-hall2015★ 150 cited

Sub-nm wide electron channels protected by topology

Christian Pauly, Bertold Rasche, Klaus Koepernik +11

Helical locking of spin and momentum and prohibited backscattering are the key properties of topologically protected states. They are expected to enable novel types of information…

cond-mat.mes-hall2014★ 144 cited

Room temperature high frequency transport of Dirac fermions in epitaxially grown Sb_2Te_3 based topological insulators

P. Olbrich, L. E. Golub, T. Herrmann +11

We report on the observation of photogalvanic effects in epitaxially grown Sb_2Te_3 three-dimensional (3D) topological insulators (TI). We show that asymmetric scattering of Dirac…

cond-mat.mes-hall2012

On the nature of the spin polarization limit in the warped Dirac cone of the Bi2Te3

A. Herdt, L. Plucinski, G. Bihlmayer +6

The magnitude of electron spin polarization in topologically protected surface states is an important parameter with respect to spintronics applications. In order to analyze the wa…