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Title: Ultrafast electron microscopy for probing magnetic dynamics

Journal Article · · MRS Bulletin

Abstract The spatial features of ultrafast changes in magnetic textures carry detailed information on microscopic couplings and energy transport mechanisms. Electrons excel in imaging such picosecond or shorter processes at nanometer length scales. We review the range of physical interactions that produce ultrafast magnetic contrast with electrons, and specifically highlight the recent emergence of ultrafast Lorentz transmission electron microscopy. From the fundamental processes involved in demagnetization at extremely short timescales to skyrmion-based devices, we show that ultrafast electron imaging will be a vital tool in solving pressing problems in magnetism and magnetic materials where nanoscale inhomogeneity, microscopic field measurement, non-equilibrium behavior or dynamics are involved. Graphic abstract

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Alexander von Humboldt Foundation; German Federal Ministry for Education; German Research Foundation (DFG); USDOE Office of Science (SC), Basic Energy Sciences (BES); VolkswagenStiftung
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1821954
Journal Information:
MRS Bulletin, Journal Name: MRS Bulletin Journal Issue: 8 Vol. 46; ISSN 0883-7694
Publisher:
Cambridge University Press (CUP)Copyright Statement
Country of Publication:
United States
Language:
English

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