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Semináře

Ernst Bauer: Improved thermoelectric performance of bulk and thin film full-Heusler systems based on Fe2VAl
Begin: 20.01.2021, 14:10
Location: ZOOM Meeting ID: 958 0426 7376

Volodymyr Buturlim: Uranium in metastable systems: structure, magnetism, superconductivity
Begin: 27.01.2021, 14:10
Location: ZOOM Meeting ID: 958 0426 7376

Lukáš Nádvorník: Terahertz and optical spintronics in ferro- and antiferromagnets
Begin: 24.02.2021, 14:10
Location: ZOOM Meeting ID: 958 0426 7376

 
Title: Lukáš Nádvorník: Terahertz and optical spintronics in ferro- and antiferromagnets
Number: 3/21
Status: Not exceeded
Begin: Středa, 24.02. 2021, 14:10
Tutor: Vladimír Sechovský
Location: ZOOM Meeting ID: 958 0426 7376


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We have a pleasure to invite you to attend the joint seminar
of the Department of Condensed Matter Physics (DCMP)
and the Materials Growth and Measurement Laboratory (MGML) http://mgml.eu.

 

Program

 

Terahertz and optical spintronics in ferro- and antiferromagnets

lecture given by:

Lukáš Nádvorník

Department of Chemical Physics and Optics, Faculty of Mahtematics and Physics, Charles University,
Ke Karlovu 3, 121 16 Prague 2, Czech Republic

 

https://cesnet.zoom.us/j/95804267376
Meeting ID: 958 0426 7376 

on Wednesday, 24.2. 2021 from 14:10 CET (13.10 UTC) 


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Vladimír Sechovský
On behalf of the DCMP and MGML


Abstract 

After the recent progress in fields of ultrafast demagnetization [1] and intense terahertz (THz) sources [2], the THz spectroscopy has found its way to explore ultrafast spintronic phenomena. By covering energies from 0.4 to 200 meV, it complements optical pump-probe techniques by resonant probing of (overlapping) various excitations in solid states, such as electron scattering rate, spin-orbit interaction or antiferromagnetic resonance.

In this talk, we will show how time-resolved THz and optical spectroscopy can provide new insight into well established spintronic phenomena like anisotropic magnetoresistance[3], ultrafast demagnetization, or spin Hall and Seebeck effects [4,5], as well as the recently observed opto-electrical recording into antiferromagnetic metal CuMnAs [6].

[1] T. Seifert et al., Nature Phot. 10, 483 (2016).
[2] P. Němec et al., Nature Physics 14, 229 (2018).
[3] L. Nádvorník et al., arXiv:2010.06280 (2020).
[4] L. Nádvorník et al., Scientific Reports 6, 22901 (2016).
[5] T. Seifert et al., Nature Communications 9, 2899 (2018).
[6] Z. Kašpar et al., Nature Nanoelectronics 10, 1038 (2020).