G
Gerhard Wortmann
Researcher at University of Paderborn
Publications - 95
Citations - 3899
Gerhard Wortmann is an academic researcher from University of Paderborn. The author has contributed to research in topics: Inelastic scattering & Extended X-ray absorption fine structure. The author has an hindex of 22, co-authored 95 publications receiving 3663 citations.
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Journal ArticleDOI
Electronic and magnetic phase diagram of β-Fe1.01Se with superconductivity at 36.7 K under pressure
Sergey A. Medvedev,Tyrel M. McQueen,I. A. Troyan,Taras Palasyuk,Mikhail Eremets,Robert J. Cava,S. Shahab Naghavi,Frederick Casper,Vadim Ksenofontov,Gerhard Wortmann,Claudia Felser +10 more
TL;DR: In this article, the magnetic and electronic phase diagram of β-Fe1.01Se has been analyzed and the transition temperature increases from 8.5 to 36.7 K under an applied pressure of 8.9 GPa.
Journal ArticleDOI
Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure
S. A. Medvedev,Tyrel M. McQueen,I. Trojan,Taras Palasyuk,Mikhail Eremets,R. J. Cava,S. Shahab Naghavi,Frederick Casper,Vadim Ksenofontov,Gerhard Wortmann,Claudia Felser +10 more
TL;DR: In this article, the superconductivity transition temperature in beta-Fe1.01Se increases from 8.5 to 36.7 K under applied pressure of 8.9 GPa.
Journal ArticleDOI
Phonon Density of States of Iron up to 153 Gigapascals
Ho-kwang Mao,Jian Xu,Viktor V. Struzhkin,Jinfu Shu,R. J. Hemley,Wolfgang Sturhahn,Michael Y. Hu,E. Ercan Alp,Lidunka Vočadlo,Dario Alfè,Geoffrey D. Price,Michael J. Gillan,Markus Schwoerer-Böhning,Daniel Häusermann,Peter J. Eng,Guoyin Shen,H. Giefers,R. Lübbers,Gerhard Wortmann +18 more
TL;DR: The results suggest that Earth's inner core has a mean atomic number equal to or higher than pure iron, which is consistent with an iron-nickel alloy.
Journal ArticleDOI
Equivalence of the Boson Peak in Glasses to the Transverse Acoustic van Hove Singularity in Crystals
A. I. Chumakov,Giulio Monaco,Alfonso Monaco,Wilson A. Crichton,Alexey Bosak,Rudolf Rüffer,Andreas Meyer,Florian Kargl,Lucia Comez,Daniele Fioretto,Daniele Fioretto,H. Giefers,S. Roitsch,Gerhard Wortmann,Murli H. Manghnani,Anwar Hushur,Quentin Williams,Judit Balogh,Krzysztof Parlinski,Paweł T. Jochym,Przemysław Piekarz +20 more
TL;DR: The atomic dynamics of the glass to that of the relevant crystal suggests the identical nature of the two features, including the boson peak, which matches the TA singularity in energy and height.
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Optical spectroscopy of Sm3+ ions in phosphate and fluorophosphate glasses
TL;DR: In this article, the decay curves of Sm3-doped phosphate and fluorophosphate glasses are perfectly single exponential for lower concentration (0.01) and gradually change to non-exponential for higher concentrations.