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Final published version
Licence: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Terahertz Magnon-Polaritons in TmFeO3
AU - Grishunin, Kirill
AU - Huisman, Thomas J.
AU - Li, Guanqiao
AU - Mishina, Elena
AU - Rasing, Theo
AU - Kimel, Alexey V.
AU - Zhang, Kailing
AU - Jin, Zuanming
AU - Cao, Shixun
AU - Ren, Wei
AU - Ma, Guo-Hong
AU - Mikhaylovskiy, Rostislav
PY - 2018/4/18
Y1 - 2018/4/18
N2 - Magnon-polaritons are shown to play a dominant role in the propagation of terahertz (THz) waves through TmFeO3 orthoferrite, if the frequencies of the waves are in the vicinity of the quasi-antiferromagnetic spin resonance mode. Both time-domain THz transmission and emission spectroscopies reveal clear beatings between two modes with frequencies slightly above and slightly below this resonance, respectively. Rigorous modeling of the interaction between the spins of TmFeO3 and the THz light shows that the frequencies correspond to the upper and lower magnon-polariton branches. Our findings reveal the previously ignored importance of propagation effects and polaritons in such heavily debated areas as THz magnonics and THz spectroscopy of electromagnons. It also shows that future progress in these areas calls for an interdisciplinary approach at the interface between magnetism and photonics.
AB - Magnon-polaritons are shown to play a dominant role in the propagation of terahertz (THz) waves through TmFeO3 orthoferrite, if the frequencies of the waves are in the vicinity of the quasi-antiferromagnetic spin resonance mode. Both time-domain THz transmission and emission spectroscopies reveal clear beatings between two modes with frequencies slightly above and slightly below this resonance, respectively. Rigorous modeling of the interaction between the spins of TmFeO3 and the THz light shows that the frequencies correspond to the upper and lower magnon-polariton branches. Our findings reveal the previously ignored importance of propagation effects and polaritons in such heavily debated areas as THz magnonics and THz spectroscopy of electromagnons. It also shows that future progress in these areas calls for an interdisciplinary approach at the interface between magnetism and photonics.
KW - terahertz
KW - magnonics
KW - polaritonics
KW - ultrafast
U2 - 10.1021/acsphotonics.7b01402
DO - 10.1021/acsphotonics.7b01402
M3 - Journal article
VL - 5
SP - 1375
EP - 1380
JO - ACS Photonics
JF - ACS Photonics
SN - 2330-4022
IS - 4
ER -