Ultrafast optical manipulation of magnetic order
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Citations
Antiferromagnetic spintronics
Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins
Interface-induced phenomena in magnetism
The building blocks of magnonics
The building blocks of magnonics
References
Ferromagnetic resonance in Ga 1 − x Mn x As : Effects of magnetic anisotropy
Ultrafast generation of ferromagnetic order via a laser-induced phase transformation in FeRh thin films.
Femtosecond electron and spin dynamics in Ni/W(110) films
Towards multiscale modeling of magnetic materials : Simulations of FePt
Temperature variation of ferromagnetic relaxation in the 3 d transition metals
Related Papers (5)
Ultrafast spin dynamics in ferromagnetic nickel.
Frequently Asked Questions (14)
Q2. What future works have the authors mentioned in the paper "Ultrafast optical manipulation of magnetic order" ?
Regarding these potential applications, for that it will be essential to extend the present state of optical manipulation and control of magnetic order toward smaller nanoscale dimensions. Given the rapid developments in nano-optics and plasmonics, such possibilities do not seem to be too far fetched.
Q3. What is the role of the hot electron gas in the demagnetization of metals?
The hot electron gas plays the role of a thermal bath for spins and thus facilitates both an intensification of spin-flip processes and the demagnetization.
Q4. Why should an observation of circular or linear birefringence be accompanied by similar effects?
Because of the Kramers-Kronig relations, an observation of circular or linear birefringence in a certain spectral range should be accompanied by similar effects of polarization-dependent absorption in another spectral domain.
Q5. Why are these domains suitable for stroboscopic pump-probe experiments?
Because of the coercivity, these magnetic domains are sufficiently stable in time and thus suitable for stroboscopic pump-probe experiments.
Q6. Why is the spin flip in the ground state due to the fact that the light mixes a?
In other words, the spin flip in the ground state is due to the fact that circularly polarized light mixes a fraction of the excited-state wave function into the ground state Pershan et al., 1966 .
Q7. What is the significance of the details of the magnetic structure for the understanding of these results?
Recent results that show that even linearly polarized laser pulses can lead to similar effects have indicated the importance of the details of the magnetic structure for the understanding of these optomagnetic results.
Q8. What is the temperature dependence of the precession frequency and the Gilbert damping parameter?
The observed strong increase in the precession frequency and the Gilbert damping when the temperature approaches TA is ideal for ultrafast ringing-free precessional switching in magnetic and magneto-optical recording.
Q9. What is the use of metallic magnets in various applications?
At the same time, metallic magnets are used in numerous applications, from power transformers and sensors to data storage and spintronics.
Q10. What is the role of the bandwidth in the classification of metallic magnets?
To make a classification, the role of the bandwidth may be invoked: narrowband materials, such as insulators, oxides, and to some extent also f metals can be excited much more selectively than the broadband transition metals.
Q11. How can a laser pulse control the precession of antiferromagnetic spins?
circularly polarized light can control the precession of antiferromagnetic spins in the terahertz domain see Fig. 40 .
Q12. Why is the effect of a femtosecond pump pulse different?
Because of the fundamental differences in the magnetic and transport properties of metals and insulators, the effect of a femtosecond pump pulse on these two types of magnetic material is different.
Q13. How can a laser-induced spin flip process be coherently stimulated?
such a laser-induced spin-flip process can be coherently stimulated if both frequencies 1 and 2 are present in the laser pulse see Fig. 2 .
Q14. What is the way to model the ultrafast laser-induced spin dynamics in a metallic?
Another approach to modeling ultrafast laser-induced spin dynamics in a metallic magnet is to use the LLG equation on the atomic level Chubykalo-Fesenko et al., 2006; Kazantseva, Nowak, et al., 2008 .