Quasioptical study of antiferromagnetic resonance in YFeO3 at submillimeter wavelength under high pulsed magnetic fields

Mukhin, A. A.; Лобанов, А. Н.; Goiran, M.; Leotin, J.; Волков, А. А.

doi:10.1016/j.jmr.2008.08.014

Cited by 5 publications

(6 citation statements)

References 16 publications

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“…These modes were attributed to transitions within the ground state 6 A 1 multiplet of Fe +3 ions occupying rare-earth positions as "impurities." Interestingly, despite a very small concentration of the impurities (ß0.01% per formula unit), their relevant absorption peaks are reported to be only 1 order of magnitude smaller than the peak corresponding to the quasi-ferromagnetic mode [49]. Our THz emission spectroscopy setup does not have sufficient spectral resolution to distinguish several impurity modes close to each other.…”

Section: Discussionmentioning

confidence: 87%

“…Submillimeter spectroscopy of an isostructural compound YFeO 3 has revealed a few modes in the frequency interval between 250 and 300 GHz [48,49]. These modes were attributed to transitions within the ground state 6 A 1 multiplet of Fe +3 ions occupying rare-earth positions as "impurities."…”

Section: Discussionmentioning

confidence: 99%

“…[49], the iron impurities are magnetically polarized antiparallel to the magnetization of the "pure" iron sublattices. The light-induced perturbation of the magnetic anisotropy and the subsequent change of the equilibrium orientation of the magnetization M must lead to the associated change of the equilibrium orientation of the impurities as shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

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Terahertz emission spectroscopy of laser-induced spin dynamics inTmFeO3andErFeO3orthoferrites

et al. 2014

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Using the examples of laser-induced spin-reorientation phase transitions in TmFeO 3 and ErFeO 3 orthoferrites, we demonstrate that terahertz emission spectroscopy can obtain novel information about ultrafast laser-induced spin dynamics, which is not accessible by more common all-optical methods. The power of the method is evidenced by the fact that, in addition to the expected quasi-ferromagnetic and quasi-antiferromagnetic modes of the iron sublattices, terahertz emission spectroscopy enables detection of a resonance optically excited at an unexpected frequency of ß0.3-0.35 THz. By recording how the amplitude and phase of the excited oscillations depend on temperature and applied magnetic field, we show that the unexpected mode has all the features of a spin resonance of the Fe 3+ ions. We suggest that it can be assigned to transitions between the multiplet sublevels of the 6 A 1 ground state of the Fe +3 ions occupying rare-earth positions.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Terahertz emission spectroscopy of laser-induced spin dynamics inTmFeO3andErFeO3orthoferrites

et al. 2014

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“…The expression of the antiferromagnetic linewidth and the damping values remain under strong debate in antiferromagnets [23,28,35,36]. However, resonance measurements in insulating antiferromagnets generally show 𝑄 − factors in the range of 100 -1000 [37][38][39][40][41]. We thus chose to evaluate the expected inverse spin-Hall voltages VISHE for prototypical canted antiferromagnets such as orthoferrites with 𝑄 − factors of 500, in the range of the existing reports [37,40,41], and note that it can reach 0.5 μV (for hac = 1 mT, i.e.…”

Section: (A))mentioning

confidence: 99%

Room-Temperature Antiferromagnetic Resonance and Inverse Spin-Hall Voltage in Canted Antiferromagnets

et al. 2021

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We study theoretically and experimentally the spin pumping signals induced by the resonance of canted antiferromagnets with Dzyaloshinskii-Moriya interaction and demonstrate that they can generate easily observable inverse spin-Hall voltages. Using a bilayer of hematite/heavy metal as a model system, we measure at room temperature the antiferromagnetic resonance and an associated inverse spin-Hall voltage, as large as in collinear antiferromagnets. As expected for coherent spin-pumping, we observe that the sign of the inverse spin-Hall voltage provides direct information about the mode handedness as deduced by comparing hematite, chromium oxide and the ferrimagnet Yttrium-Iron Garnet. Our results open new means to generate and detect spincurrents at terahertz frequencies by functionalizing antiferromagnets with low damping and canted moments.

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“…There are four spin-wave (SW) modes associated with the four magnetic ions per unit cell in YFeO 3 . Two modes have been observed at about 10 and 20 cm −1 at the point with Raman spectroscopy [12] and quasioptical techniques [13,14]. Combining these observations with inelastic neutron scattering (INS) measurements of SW dispersion at higher energies led to the development of a simplified spin-state model [15].…”

Section: Introductionmentioning

confidence: 99%

Terahertz absorption spectroscopy study of spin waves in orthoferrite YFeO3 in a magnetic field

et al. 2018

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We measured absorption of THz radiation in YFeO 3 single crystals at a temperature of 3 K in the magnetic field up to 17 T applied in all three crystallographic directions. Two spin-wave modes were observed at the point with energies 1.2 meV (9.8 cm −1) and 2.4 meV (19.3 cm −1) in zero field. From the magnetic-field dependence of mode energies, we have refined the previously proposed model [S. E. Hahn et al., Phys. Rev. B 89, 014420 (2014)] and quantified the parameters of Dzyaloshinskii-Moriya interactions and single-ion anisotropies.

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Quasioptical study of antiferromagnetic resonance in YFeO3 at submillimeter wavelength under high pulsed magnetic fields

Cited by 5 publications

References 16 publications

Terahertz emission spectroscopy of laser-induced spin dynamics inTmFeO3andErFeO3orthoferrites

Terahertz emission spectroscopy of laser-induced spin dynamics inTmFeO3andErFeO3orthoferrites

Room-Temperature Antiferromagnetic Resonance and Inverse Spin-Hall Voltage in Canted Antiferromagnets

Terahertz absorption spectroscopy study of spin waves in orthoferrite YFeO3 in a magnetic field

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