2023年3月31日 · We evidence, experimentally and through modeling, two excitation processes of spin dynamics in NiO: an off-resonant instantaneous optical spin torque in (111) oriented films and a...

2010年11月21日 · Single-cycle terahertz pulses switch on and off coherent spin waves in antiferromagnetic NiO at frequencies as high as 1 THz. An optical probe pulse with a duration of 8 fs follows the...

2020年11月16日 · In this study, we report the optical generation of ultrafast spin current in an AFM/HM heterostructure that comprises NiO and Pt, which we detect with THz emission spectroscopy. The THz...

In this study, a frequency-domain terahertz (THz) spectroscopy technique using continuously tunable photomixers was applied to a single-crystalline NiO, and magnetic field dependence of the AFMR mode at 1 THz was obtained for three different field orientations for the first time.

2025年2月2日 · In the plain NiO case, THz radiation of interest to applications is insignificant, but adding SOC enhances both current and magnetic dipole contributions to it. Above THz range, we find integer high-harmonic generation, as well as unusual noninteger harmonics for …

2024年2月15日 · To measure the antiferromagnetic magnon mode in NiO, we built a terahertz time-domain spectroscopy (THz-TDS) system, as illustrated in Fig. 1(b). In our experiment, we used a 1 kHz repetition rate Ti: Sapphire laser system with a pulse duration of 35 fs at an 800 nm central wavelength (Spitfire-Ace, Spectra Physics).

2020年7月7日 · In this work, we demonstrate that the THz resonance properties, such as resonant frequency and the Q factor, of antiferromagnetic NiO can be controlled over a wide range by substituting the N i 2 + cation with various different cations.

We have studied the ultrafast magnon dynamics in an antiferromagnetic 3d-transition-metal monoxide, nickel oxide (NiO), using optical pump-probe spectroscopy and terahertz time-domain spectroscopy (THz- TDS).

2017年9月25日 · In this study, we investigate the ultrafast magnon dynamics in an antiferromagnetic 3d-transition-metal monoxide, nickel oxide (NiO), using optical pump-probe spectroscopy and THz-TDS. Experiments employing these two techniques are complementary.

2024年1月19日 · THz time-domain spectroscopy examines the influence of the antiferromagnetic interlayer in the THz emission, showing that the NiO interlayer in particular is able to transport spin current.