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Funato, Takumi*; Matsuo, Mamoru
Journal of Magnetism and Magnetic Materials, 540, p.168436_1 - 168436_7, 2021/12
Times Cited Count：5 Percentile：21.44(Materials Science, Multidisciplinary)Yamamoto, Tsuyoshi*; Kato, Takeo*; Matsuo, Mamoru
Physical Review B, 104(12), p.L121401_1 - L121401_5, 2021/09
Times Cited Count：8 Percentile：37.01(Materials Science, Multidisciplinary)Yama, Masaki*; Tatsuno, Masahiro*; Kato, Takeo*; Matsuo, Mamoru
Physical Review B, 104(5), p.054410_1 - 054410_9, 2021/08
Times Cited Count：12 Percentile：51.64(Materials Science, Multidisciplinary)Funato, Takumi*; Matsuo, Mamoru
Physical Review B, 104(6), p.L060412_1 - L060412_5, 2021/08
Times Cited Count：3 Percentile：12.49(Materials Science, Multidisciplinary)Nakata, Koki; Onuma, Yuichi*; Matsuo, Mamoru*
no journal, ,
Extending a Boltzmann-Langevin theory to magnons, we show a universality of current-noise suppression in diffusive systems against the difference of quantum-statistical properties of bosons and fermions. We theoretically discover that compared with a Poissonian shot noise of magnons in an insulating ferromagnetic junction, the magnonic shot noise is suppressed in the diffusive insulating bulk magnet and noise-to-current ratio (Fano factor) at low temperatures exhibits a universal behavior, i.e., the same suppression 1/3 as the one for electron transport in diffusive conductors, despite the difference of quantum-statistical properties.
Nakata, Koki; Onuma, Yuichi*; Matsuo, Mamoru*
no journal, ,
Using the Keldysh formalism, we calculate a magnonic current-noise and compare it with the current-noise of electrically charged electrons. We thus discuss the universality of current-noise against the difference of quantum-statistical properties of bosons and fermions.
