JOPSS - Search Results

Combining the quark model, the quark-pair-creation mechanism and $B^{(*)}bar K$ interaction, we have investigated the near-threshold -wave states in the framework of the Hamiltonian effective field theory. With the heavy quark flavor symmetry, all the parameters are determined in the sector by fitting the lattice data. The masses of the bottom-strange partners of the $D^{*}_{s0}(2317)$ and $D^{*}_{s1}(2460)$ are predicted, which are well consistent with the lattice QCD simulation. The two -wave states are the mixtures of the bare core and $B^{(*)}bar K$ component. Moreover, we find a crossing point between the energy levels with and without the interaction Hamiltonian in the finite volume spectrum in the case, which corresponds to a CDD (Castillejo-Dalitz-Dyson) zero in the -matrix of the scattering. This CDD zero will help deepen the insights of the near-threshold states and can be examined by future lattice calculation.

Journal Articles

Two-dimensional quantum universality in the spin-1/2 triangular-lattice quantum antiferromagnet Na $_{2}$ BaCo(PO $_{4}$ ) $_{2}$

Sheng, J.*; Wang, L.*; Candini, A.*; Jiang, W.*; Huang, L.*; Xi, B.*; Zhao, J.*; Ge, H.*; Zhao, N.*; Fu, Y.*; et al.

Proceedings of the National Academy of Sciences of the United States of America, 119(51), p.e2211193119_1 - e2211193119_9, 2022/12

https://doi.org/10.1073/pnas.2211193119

Times Cited Count：18 Percentile：80.69(Multidisciplinary Sciences)

Journal Articles

Magnetic properties and electronic configurations of Mn ions in the diluted magnetic semiconductor Ba $_{1-x}$ K(Zn $_{1-y}$ Mn)As studied by X-ray magnetic circular dichroism and resonant inelastic X-ray scattering

Suzuki, Hakuto*; Zhao, G.*; Okamoto, Jun*; Sakamoto, Shoya*; Chen, Z.-Y.*; Nonaka, Yosuke*; Shibata, Goro; Zhao, K.*; Chen, B.*; Wu, W.-B.*; et al.

Journal of the Physical Society of Japan, 91(6), p.064710_1 - 064710_5, 2022/06

https://doi.org/10.7566/JPSJ.91.064710

Times Cited Count：0 Percentile：0.00(Physics, Multidisciplinary)

Journal Articles

Novel coupled channel framework connecting the quark model and lattice QCD for the near-threshold states

Yang, Z.*; Wang, G.-J.*; Wu, J.-J.*; Oka, Makoto; Zhu, S.-L.*

Physical Review Letters, 128(11), p.112001_1 - 112001_6, 2022/03

https://doi.org/10.1103/PhysRevLett.128.112001

Times Cited Count：28 Percentile：94.82(Physics, Multidisciplinary)

A novel framework is proposed to extract near-threshold resonant states from finite-volume energy levels of lattice QCD and is applied to elucidate structures of the positive parity . The quark model, the quark-pair-creation mechanism and $D^{(*)}K$ interaction are incorporated into the Hamiltonian effective field theory. The bare states are almost purely given by the states with heavy-quark spin bases. The physical $D^*_{s0}(2317)$ and $D^*_{s1}(2460)$ are the mixtures of bare core and $D^{(*)}K$ component, while the $D^*_{s1}(2536)$ and $D^*_{s2}(2573)$ are almost dominated by bare . Furthermore, our model well reproduce the clear level crossing of the $D^*_{s1}(2536)$ with the scattering state at a finite volume.

Journal Articles

Acoustic Rashba-Edelstein effect

Funato, Takumi*; Matsuo, Mamoru

Journal of Magnetism and Magnetic Materials, 540, p.168436_1 - 168436_7, 2021/12

https://doi.org/10.1016/j.jmmm.2021.168436

Times Cited Count：3 Percentile：18.96(Materials Science, Multidisciplinary)

Journal Articles

Spin current at a magnetic junction as a probe of the Kondo state

Yamamoto, Tsuyoshi*; Kato, Takeo*; Matsuo, Mamoru

Physical Review B, 104(12), p.L121401_1 - L121401_5, 2021/09

https://doi.org/10.1103/PhysRevB.104.L121401

Times Cited Count：6 Percentile：40.97(Materials Science, Multidisciplinary)

Journal Articles

Spin pumping of two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interactions

Yama, Masaki*; Tatsuno, Masahiro*; Kato, Takeo*; Matsuo, Mamoru

Physical Review B, 104(5), p.054410_1 - 054410_9, 2021/08

https://doi.org/10.1103/PhysRevB.104.054410

Times Cited Count：8 Percentile：51.67(Materials Science, Multidisciplinary)

Journal Articles

Helicity current generation by distorted Rashba coupling

Funato, Takumi*; Matsuo, Mamoru

Physical Review B, 104(6), p.L060412_1 - L060412_5, 2021/08

https://doi.org/10.1103/PhysRevB.104.L060412

Times Cited Count：3 Percentile：20.23(Materials Science, Multidisciplinary)

Journal Articles

Asymmetric quantum shot noise in magnon transport

Nakata, Koki; Onuma, Yuichi*; Matsuo, Mamoru*

Physical Review B, 99(13), p.134403_1 - 134403_7, 2019/04

AA2019-0013.pdf:0.42MB

https://doi.org/10.1103/PhysRevB.99.134403

Times Cited Count：5 Percentile：24.08(Materials Science, Multidisciplinary)

We study a frequency-dependent noise-to-current ratio for asymmetric, symmetric, and noncommutative current noise in a ferromagnetic insulating junction, and extract quantum-mechanical properties of magnon transport at low temperatures. We demonstrate that the noncommutative noise, which vanishes in the dc limit (i.e., a classical regime), increases monotonically as a function of frequency, and show that the noncommutative noise associated directly with quantum fluctuations of magnon currents breaks through the classical upper limit determined by the symmetric noise and realizes asymmetric quantum shot noise. Finally, we show that our theoretical predictions are within experimental reach with current device and measurement schemes while exploiting low temperatures. Our work provides a platform toward experimental access to quantum fluctuations of magnon currents.

Journal Articles

Magnonic noise and Wiedemann-Franz law

Nakata, Koki; Onuma, Yuichi*; Matsuo, Mamoru*

Physical Review B, 98(9), p.094430_1 - 094430_8, 2018/09

AA2018-0350.pdf:0.51MB

https://doi.org/10.1103/PhysRevB.98.094430

Times Cited Count：13 Percentile：48.46(Materials Science, Multidisciplinary)

We theoretically establish mutual relations among magnetic momentum, heat, and fluctuations of propagating magnons in a ferromagnetic insulating junction in terms of noise and the bosonic Wiedemann-Franz (WF) law. Using the Schwinger-Keldysh formalism, we calculate all transport coefficients of a noise spectrum for both magnonic spin and heat currents, and establish Onsager relations between the thermomagnetic currents and the zero-frequency noise. Making use of the magnonic WF law and the Seebeck coefficient in the low-temperature limit, we theoretically discover universal relations, i.e. being independent of material parameters, for both the nonequilibrium and equilibrium noise, and show that each noise is described solely in terms of thermal conductance.