S
Stefan Mathias
Researcher at University of Göttingen
Publications - 107
Citations - 4949
Stefan Mathias is an academic researcher from University of Göttingen. The author has contributed to research in topics: Femtosecond & Ultrashort pulse. The author has an hindex of 31, co-authored 96 publications receiving 4195 citations. Previous affiliations of Stefan Mathias include National Institute of Standards and Technology & University of Colorado Boulder.
Papers
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Journal ArticleDOI
Topological states on the gold surface
Binghai Yan,Benjamin Stadtmüller,Norman Haag,S. Jakobs,Johannes Seidel,Dominik Jungkenn,Stefan Mathias,Mirko Cinchetti,Martin Aeschlimann,Claudia Felser +9 more
TL;DR: This work shows that these Shockley surface states can be reinterpreted as topologically derived surface states (TDSSs) of a topological insulator (TI), a recently discovered quantum state.
Journal ArticleDOI
Collapse of long-range charge order tracked by time-resolved photoemission at high momenta
Timm Rohwer,S. Hellmann,M. Wiesenmayer,C. Sohrt,A. Stange,Bartosz Slomski,Adra Carr,Yanwei Liu,Yanwei Liu,Luis Miaja Avila,M. Kalläne,Stefan Mathias,Stefan Mathias,Lutz Kipp,Kai Rossnagel,Michael Bauer +15 more
TL;DR: It is anticipated that the experimental advance represented by the present study will be useful to study the ultrafast dynamics and microscopic mechanisms of electronic phenomena in a wide range of materials.
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Ultrafast magnetization enhancement in metallic multilayers driven by superdiffusive spin current
Dennis Rudolf,Chan La-o-vorakiat,Marco Battiato,Roman Adam,Justin M. Shaw,Emrah Turgut,Pablo Maldonado,Stefan Mathias,Stefan Mathias,Patrik Grychtol,Hans T. Nembach,Thomas J. Silva,Martin Aeschlimann,Henry C. Kapteyn,Margaret M. Murnane,Claus M. Schneider,Peter M. Oppeneer +16 more
TL;DR: In this paper, the spin dynamics in magnetic trilayers can be driven by ultrafast light pulses, resulting in transient magnetization changes on femtosecond timescales.
Journal Article
Ultrafast Magnetization Enhancement in Metallic Multilayers Driven by Superdiffusive Spin Current
Emrah Turgut,Chan La-o-vorakiat,Patrik Grychtol,Henry C. Kapteyn,Margaret M. Murnane,Dennis Rudolf,Roman Adam,Claus M. Schneider,Marco Battiato,Pablo Maldonado,Peter M. Oppeneer,Stefan Mathias,Martin Aeschlimann,Justin M. Shaw,Hans T. Nembach,Thomas J. Silva +15 more
TL;DR: Spatially separate the spin dynamics using Ni/Ru/Fe magnetic trilayers and surprisingly find that optically induced demagnetization of the Ni layer transiently enhances the magnetizations of the Fe layer when the two layer magnetizations are initially aligned parallel.
Journal ArticleDOI
Controlling the Competition between Optically Induced Ultrafast Spin-Flip Scattering and Spin Transport in Magnetic Multilayers
Emrah Turgut,Chan La-o-vorakiat,Justin M. Shaw,Patrik Grychtol,Hans T. Nembach,Dennis Rudolf,Roman Adam,Martin Aeschlimann,Claus M. Schneider,Thomas J. Silva,Margaret M. Murnane,Henry C. Kapteyn,Stefan Mathias,Stefan Mathias +13 more
TL;DR: This work uses multilayers of Fe and Ni with different metals and insulators as the spacer material to conclusively show that spin currents can have a significant contribution to optically induced magnetization dynamics, in addition to spin-flip scattering processes.