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Alexander Paarmann
Researcher at Fritz Haber Institute of the Max Planck Society
Publications - 62
Citations - 1855
Alexander Paarmann is an academic researcher from Fritz Haber Institute of the Max Planck Society. The author has contributed to research in topics: Polariton & Phonon. The author has an hindex of 18, co-authored 55 publications receiving 1428 citations. Previous affiliations of Alexander Paarmann include Max Planck Society & University of Toronto.
Papers
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Journal ArticleDOI
Temperature dependence of the two-dimensional infrared spectrum of liquid H2O
Darren Kraemer,M. L. Cowan,Alexander Paarmann,Nils Huse,Erik T. J. Nibbering,Thomas Elsaesser,R. J. Dwayne Miller +6 more
TL;DR: Two-dimensional infrared photon-echo measurements of the OH stretching vibration in liquid H2O are performed, suggesting a delocalization of OH stretching excitations over several water molecules.
Journal ArticleDOI
Generalized 4 × 4 matrix formalism for light propagation in anisotropic stratified media: study of surface phonon polaritons in polar dielectric heterostructures
TL;DR: In this paper, a generalized 4×4 matrix formalism for the description of light propagation in birefringent stratified media is presented. But unlike previous work, this algorithm is capable of treating arbitrarily anisotropic or isotropic, absorbing or non-absorbing materials and is free of discontinuous solutions.
Proceedings ArticleDOI
The new IR and THz FEL facility at the Fritz Haber Institute in Berlin
Wieland Schöllkopf,Sandy Gewinner,Heinz Junkes,Alexander Paarmann,Gert von Helden,Hans Bluem,Alan M. M. Todd +6 more
TL;DR: In this paper, a mid-infrared oscillator FEL has been constructed at the Fritz Haber Institute, which provides a flnal electron energy adjustable from 15 to 50 MeV, low longitudinal (< 50 keV ps) and transverse emittance (< 20 mm mrad).
Journal ArticleDOI
Nanofocused Plasmon-Driven Sub-10 fs Electron Point Source
TL;DR: In this article, a plasmon-triggered point-projection imaging of an individual semiconductor nanowire at 3 μm tip-sample distance is presented.
Journal ArticleDOI
Dissecting spin-phonon equilibration in ferrimagnetic insulators by ultrafast lattice excitation
Sebastian F. Maehrlein,Sebastian F. Maehrlein,Ilie Radu,Ilie Radu,Pablo Maldonado,Alexander Paarmann,Michael Gensch,Alexandra M. Kalashnikova,Roman V. Pisarev,Martin Wolf,Peter M. Oppeneer,Joseph Barker,Tobias Kampfrath,Tobias Kampfrath +13 more
TL;DR: It is shown that spin manipulation by phonons can be extended to antiferromagnets and into the terahertz frequency range and is relevant for all insulating ferrimagnets.