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Evidence of reduced surface electron-phonon scattering in the conduction band of Bi_{2}Se_{3} by non-equilibrium ARPES
A. Crepaldi, F. Cilento, B. Ressel +11
The nature of the Dirac quasiparticles in topological insulators calls for a direct investigation of the electron-phonon scattering at the \emph{surface}. By comparing time-resolve…
Multiferroicity in the geometrically frustrated FeTe2O5Cl
M. Pregelj, A. Zorko, O. Zaharko +8
The layered FeTe2O5Cl compound was studied by specific-heat, muon spin relaxation, nuclear magnetic resonance, dielectric, as well as neutron and synchrotron x-ray diffraction meas…
Doping Dependence of the Plasmon Dispersion in 2H-Tantalum-Diselenide
Andreas König, Roman Schuster, Martin Knupfer +2
Inelastic electron scattering is applied to investigate the impact of potassium intercalation on the charge carrier plasmon energy and dispersion in the charge-density wave (CDW) b…
Bulk Fermi surface and electronic properties of CuBiSe
C. Martin, V. Craciun, K. H. Miller +5
The electronic properties of CuBiSe have been investigated using Shubnikov-de Haas and optical reflectance measurements. Quantum oscillations reveal a bulk, th…
Signatures of a Pressure-Induced Topological Quantum Phase Transition in BiTeI
Xiaoxiang Xi, Chunli Ma, Zhenxian Liu +6
We report the observation of two signatures of a pressure-induced topological quantum phase transition in the polar semiconductor BiTeI using x-ray powder diffraction and infrared…
Femtosecond Time-resolved MeV Electron Diffraction
Pengfei Zhu, H. Berger, J. Cao +9
We report the experimental demonstration of femtosecond electron diffraction using high-brightness MeV electron beams. High-quality, single-shot electron diffraction patterns for b…