TY  - GEN
A1  - Mattern, Maximilian
A1  - Pudell, Jan-Etienne
A1  - Dumesnil, Karine
A1  - von Reppert, Alexander
A1  - Bargheer, Matias
T1  - Towards shaping picosecond strain pulses via magnetostrictive transducers
T2  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Using time-resolved x-ray diffraction, we demonstrate the manipulation of the picosecond strain response of a metallic heterostructure consisting of a dysprosium (Dy) transducer and a niobium (Nb) detection layer by an external magnetic field. We utilize the first-order ferromagnetic–antiferromagnetic phase transition of the Dy layer, which provides an additional large contractive stress upon laser excitation compared to its zerofield response. This enhances the laser-induced contraction of the transducer and changes the shape of the picosecond strain pulses driven in Dy and detected within the buried Nb layer. Based on our experiment with rare-earth metals we discuss required properties for functional transducers, which may allow for novel field-control of the emitted picosecond strain pulses.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1321 
KW  - picosecond ultrasonics
KW  - magnetostriction
KW  - ultrafast x-ray diffraction
KW  - ultrafast photoacoustics
KW  - nanoscale heat transfer
KW  - negative thermal expansion
Y1  - 2023
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/58886
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-588868
SN  - 1866-8372
IS  - 1321
ER  -