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Temporal and spectral fingerprint of ultrafast all-coherent spin switching

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Temporal and spectral fingerprint of ultrafast all-coherent spin switching. / Schlauderer, S.; Lange, C.; Baierl, S.; Ebnet, T.; Schmid, C. P.; Valovcin, D. C.; Zvezdin, A. K.; Kimel, A.V.; Mikhaylovskiy, Rostislav; Huber, R.

In: Nature, Vol. 569, 15.05.2019, p. 383-387.

Research output: Contribution to journalLetter

Harvard

Schlauderer, S, Lange, C, Baierl, S, Ebnet, T, Schmid, CP, Valovcin, DC, Zvezdin, AK, Kimel, AV, Mikhaylovskiy, R & Huber, R 2019, 'Temporal and spectral fingerprint of ultrafast all-coherent spin switching', Nature, vol. 569, pp. 383-387. https://doi.org/10.1038/s41586-019-1174-7

APA

Schlauderer, S., Lange, C., Baierl, S., Ebnet, T., Schmid, C. P., Valovcin, D. C., Zvezdin, A. K., Kimel, A. V., Mikhaylovskiy, R., & Huber, R. (2019). Temporal and spectral fingerprint of ultrafast all-coherent spin switching. Nature, 569, 383-387. https://doi.org/10.1038/s41586-019-1174-7

Vancouver

Schlauderer S, Lange C, Baierl S, Ebnet T, Schmid CP, Valovcin DC et al. Temporal and spectral fingerprint of ultrafast all-coherent spin switching. Nature. 2019 May 15;569:383-387. https://doi.org/10.1038/s41586-019-1174-7

Author

Schlauderer, S. ; Lange, C. ; Baierl, S. ; Ebnet, T. ; Schmid, C. P. ; Valovcin, D. C. ; Zvezdin, A. K. ; Kimel, A.V. ; Mikhaylovskiy, Rostislav ; Huber, R. / Temporal and spectral fingerprint of ultrafast all-coherent spin switching. In: Nature. 2019 ; Vol. 569. pp. 383-387.

Bibtex

@article{149c80f7cc944753b9a7df8dd62d544b,
title = "Temporal and spectral fingerprint of ultrafast all-coherent spin switching",
abstract = "Future information technology demands ultimately fast, low-loss quantum control. Intense light fields have facilitated important milestones, such as inducing novel states of matter, accelerating electrons ballistically, or coherently flipping the valley pseudospin. These dynamics leave unique signatures, such as characteristic bandgaps or high-order harmonic radiation. The fastest and least dissipative way of switching the technologically most important quantum attribute – the spin – between two states separated by a potential barrier is to trigger an all-coherent precession. Pioneering experiments and theory with picosecond electric and magnetic fields have suggested this possibility, yet observing the actual dynamics has remained out of reach. Here, we show that terahertz (1 THz = 1012 Hz) electromagnetic pulses allow coherent navigation of spins over a potential barrier and we reveal the corresponding temporal and spectral fingerprints. This goal is achieved by coupling spins in antiferromagnetic TmFeO3 with the locally enhanced THz electric field of custom-tailored antennas. Within their duration of 1 ps, the intense THz pulses abruptly change the magnetic anisotropy and trigger a large-amplitude ballistic spin motion. A characteristic phase flip, an asymmetric splitting of the magnon resonance, and a long-lived offset of the Faraday signal are hallmarks of coherent spin switching into adjacent potential minima, in agreement with a numerical simulation. The switchable spin states can be selected by an external magnetic bias. The low dissipation and the antenna{\textquoteright}s sub-wavelength spatial definition could facilitate scalable spin devices opera¬ting at THz rates.",
keywords = "Terahertz, Magnetism, Ultrafast phenomena, Magneto-Optic",
author = "S. Schlauderer and C. Lange and S. Baierl and T. Ebnet and Schmid, {C. P.} and Valovcin, {D. C.} and Zvezdin, {A. K.} and A.V. Kimel and Rostislav Mikhaylovskiy and R. Huber",
year = "2019",
month = may
day = "15",
doi = "10.1038/s41586-019-1174-7",
language = "English",
volume = "569",
pages = "383--387",
journal = "Nature",
issn = "0028-0836",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Temporal and spectral fingerprint of ultrafast all-coherent spin switching

AU - Schlauderer, S.

AU - Lange, C.

AU - Baierl, S.

AU - Ebnet, T.

AU - Schmid, C. P.

AU - Valovcin, D. C.

AU - Zvezdin, A. K.

AU - Kimel, A.V.

AU - Mikhaylovskiy, Rostislav

AU - Huber, R.

PY - 2019/5/15

Y1 - 2019/5/15

N2 - Future information technology demands ultimately fast, low-loss quantum control. Intense light fields have facilitated important milestones, such as inducing novel states of matter, accelerating electrons ballistically, or coherently flipping the valley pseudospin. These dynamics leave unique signatures, such as characteristic bandgaps or high-order harmonic radiation. The fastest and least dissipative way of switching the technologically most important quantum attribute – the spin – between two states separated by a potential barrier is to trigger an all-coherent precession. Pioneering experiments and theory with picosecond electric and magnetic fields have suggested this possibility, yet observing the actual dynamics has remained out of reach. Here, we show that terahertz (1 THz = 1012 Hz) electromagnetic pulses allow coherent navigation of spins over a potential barrier and we reveal the corresponding temporal and spectral fingerprints. This goal is achieved by coupling spins in antiferromagnetic TmFeO3 with the locally enhanced THz electric field of custom-tailored antennas. Within their duration of 1 ps, the intense THz pulses abruptly change the magnetic anisotropy and trigger a large-amplitude ballistic spin motion. A characteristic phase flip, an asymmetric splitting of the magnon resonance, and a long-lived offset of the Faraday signal are hallmarks of coherent spin switching into adjacent potential minima, in agreement with a numerical simulation. The switchable spin states can be selected by an external magnetic bias. The low dissipation and the antenna’s sub-wavelength spatial definition could facilitate scalable spin devices opera¬ting at THz rates.

AB - Future information technology demands ultimately fast, low-loss quantum control. Intense light fields have facilitated important milestones, such as inducing novel states of matter, accelerating electrons ballistically, or coherently flipping the valley pseudospin. These dynamics leave unique signatures, such as characteristic bandgaps or high-order harmonic radiation. The fastest and least dissipative way of switching the technologically most important quantum attribute – the spin – between two states separated by a potential barrier is to trigger an all-coherent precession. Pioneering experiments and theory with picosecond electric and magnetic fields have suggested this possibility, yet observing the actual dynamics has remained out of reach. Here, we show that terahertz (1 THz = 1012 Hz) electromagnetic pulses allow coherent navigation of spins over a potential barrier and we reveal the corresponding temporal and spectral fingerprints. This goal is achieved by coupling spins in antiferromagnetic TmFeO3 with the locally enhanced THz electric field of custom-tailored antennas. Within their duration of 1 ps, the intense THz pulses abruptly change the magnetic anisotropy and trigger a large-amplitude ballistic spin motion. A characteristic phase flip, an asymmetric splitting of the magnon resonance, and a long-lived offset of the Faraday signal are hallmarks of coherent spin switching into adjacent potential minima, in agreement with a numerical simulation. The switchable spin states can be selected by an external magnetic bias. The low dissipation and the antenna’s sub-wavelength spatial definition could facilitate scalable spin devices opera¬ting at THz rates.

KW - Terahertz

KW - Magnetism

KW - Ultrafast phenomena

KW - Magneto-Optic

U2 - 10.1038/s41586-019-1174-7

DO - 10.1038/s41586-019-1174-7

M3 - Letter

VL - 569

SP - 383

EP - 387

JO - Nature

JF - Nature

SN - 0028-0836

ER -