475 citations · 3.3k across the 51 of their papers we have counts for
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Separating terahertz spin and charge contributions from ultrathin antiferromagnetic heterostructures
Thomas W. J. Metzger, Peter Fischer, Takashi Kikkawa +3
Femtosecond laser excitation of nanometer thin heterostructures comprising a heavy metal and a magnetically ordered material is known to result in the emission of terahertz radiati…
All optical excitation of spin polarization in d-wave altermagnets
Marius Weber, Stephan Wust, Luca Haag +14
The recently discovered altermagnets exhibit collinear magnetic order with zero net magnetization but with unconventional spin-polarized d/g/i-wave band structures, expanding the k…
Negative longitudinal resistance of monolayer graphene in the quantum Hall regime
Alexey A. Kaverzin, Shunsuke Daimon, Takashi Kikkawa +2
In the quantum Hall regime the charge current is carried by ideal one-dimensional edge channels where the backscattering is prohibited by topology. This results in the constant pot…
Field Dispersion and Strong Coupling of Nuclear-Electron Spin Excitation in MnCO
Takahiko Makiuchi, Takashi Kikkawa, Thanaporn Sichanugrist +5
Hybridized nuclear and electron spin excitation in a MnCO crystal, a weakly-anisotropic antiferromagnet, has been investigated. In this material, the hyperfine interaction is s…
Understanding spin currents from magnon dispersion and polarization: Spin-Seebeck effect and neutron scattering study on Tb3Fe5O12
Y. Kawamoto, T. Kikkawa, M. Kawamata +9
Magnon spin currents in the ferrimagnetic garnet Tb3Fe5O12 with 4f electrons were examined through the spin-Seebeck effect and neutron scattering measurements. The compound shows a…