Search Results - "Rossnagel, Kai"
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1
Pushing the space-charge limit in electron momentum microscopy
Published in New journal of physics (15-02-2018)Get full text
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Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2
Published in Nature communications (06-03-2020)“…Photo-induced switching between collective quantum states of matter is a fascinating rising field with exciting opportunities for novel technologies…”
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3
Quantum spins and hybridization in artificially-constructed chains of magnetic adatoms on a superconductor
Published in Nature communications (20-04-2022)“…Magnetic adatom chains on surfaces constitute fascinating quantum spin systems. Superconducting substrates suppress interactions with bulk electronic…”
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4
Survival of Floquet–Bloch States in the Presence of Scattering
Published in Nano letters (23-06-2021)“…Floquet theory has spawned many exciting possibilities for electronic structure control with light, with enormous potential for future applications. The…”
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Toward Direct Exploration of the Few-Femtosecond Dynamics of Electronic Coherence and Correlation in Quantum Materials Using Time- and Angle-Resolved Photoemission Spectroscopy
Published in Crystals (Basel) (01-05-2024)“…Over the last two decades, time- and angle-resolved photoemission spectroscopy (trARPES) has become a mature and established experimental technique for the…”
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6
Ultrafast Metamorphosis of a Complex Charge-Density Wave
Published in Physical review letters (08-01-2016)“…Modulated phases, commensurate or incommensurate with the host crystal lattice, are ubiquitous in solids. The transition between such phases involves formation…”
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7
Collapse of long-range charge order tracked by time-resolved photoemission at high momenta
Published in Nature (London) (24-03-2011)“…Intense femtosecond (10−15 s) light pulses can be used to transform electronic, magnetic and structural order in condensed-matter systems on timescales of…”
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8
Reversible coordination-induced spin-state switching in complexes on metal surfaces
Published in Nature nanotechnology (01-01-2020)“…Molecular spin switches are attractive candidates for controlling the spin polarization developing at the interface between molecules and magnetic metal…”
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9
Quantum phase transition from triangular to stripe charge order in NbSe2
Published in Proceedings of the National Academy of Sciences - PNAS (29-01-2013)“…The competition between proximate electronic phases produces a complex phenomenology in strongly correlated systems. In particular, fluctuations associated…”
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10
Coherent modulation of the electron temperature and electron–phonon couplings in a 2D material
Published in Proceedings of the National Academy of Sciences - PNAS (21-04-2020)“…Ultrashort light pulses can selectively excite charges, spins, and phonons in materials, providing a powerful approach for manipulating their properties. Here…”
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Suppression of the Charge Density Wave State in Two‐Dimensional 1T‐TiSe2 by Atmospheric Oxidation
Published in Angewandte Chemie International Edition (24-07-2017)“…Two‐dimensional (2D) metallic transition‐metal dichalcogenides (TMDCs), such as 1T‐TiSe2, have recently emerged as unique platforms for exploring their…”
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12
Surface polarization profile of ferroelectric thin films probed by X-ray standing waves and photoelectron spectroscopy
Published in Scientific reports (16-10-2024)“…Understanding the mechanisms underlying a stable polarization at the surface of ferroelectric thin films is of particular importance both from a fundamental…”
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13
Precursor region with full phonon softening above the charge-density-wave phase transition in 2H-TaSe2
Published in Nature communications (10-11-2023)“…Research on charge-density-wave (CDW) ordered transition-metal dichalcogenides continues to unravel new states of quantum matter correlated to the intertwined…”
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14
Electronic and Structural Fingerprints of Charge-Density-Wave Excitations in Extreme Ultraviolet Transient Absorption Spectroscopy
Published in Physical review. X (01-06-2023)“…Femtosecond core-level transient absorption spectroscopy is utilized to investigate photoinduced dynamics of the charge density wave in 1T-TiSe_{2} at the Ti…”
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15
Real-space anisotropy of the superconducting gap in the charge-density wave material 2H-NbSe2
Published in npj quantum materials (14-01-2022)“…We present a scanning tunneling microscopy (STM) and ab-initio study of the anisotropic superconductivity of 2H-NbSe 2 in the charge-density-wave (CDW) phase…”
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Light-Induced Spin Crossover in an Fe(II) Low-Spin Complex Enabled by Surface Adsorption
Published in The journal of physical chemistry letters (05-04-2018)“…Understanding and controlling the spin-crossover properties of molecular complexes can be of particular interest for potential applications in molecular…”
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17
A compact approach to higher-resolution resonant inelastic x-ray scattering detection using photoelectrons
Published in New journal of physics (01-05-2024)“…Abstract The detection of inelastically scattered soft x-rays with high energy resolution usually requires large grating spectrometers. Recently, photoelectron…”
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Author Correction: Super-resolved time–frequency measurements of coupled phonon dynamics in a 2D quantum material
Published in Scientific reports (04-07-2023)Get full text
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Super-resolved time–frequency measurements of coupled phonon dynamics in a 2D quantum material
Published in Scientific reports (17-11-2022)“…Methods to probe and understand the dynamic response of materials following impulsive excitation are important for many fields, from materials and energy…”
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Photon‐shot‐noise‐limited transient absorption soft X‐ray spectroscopy at the European XFEL
Published in Journal of synchrotron radiation (01-03-2023)“…Femtosecond transient soft X‐ray absorption spectroscopy (XAS) is a very promising technique that can be employed at X‐ray free‐electron lasers (FELs) to…”
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