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Characteristics of Multi-photon Absorption in a β-Ga2O3 Single Crystal
作者：Suguru Yamaoka , Yusuke Mikuni , Masaaki Nakayama
来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
摘要：We have investigated the characteristics of multi-photon absorption (MPA) in a β-Ga2O3 single crystal at room temperature using the photoluminescence (PL) of the self-trapped exciton (STE) as a probe. From analysis of the excitation fluence dependence o...
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    Phase Diagram of a Magnetic Topological Nodal Semimetal: Stable Nodal Line in an Easy-Plane Ferromagnet
    作者：Yuya Ominato , Ai Yamakage , Kentaro Nomura
    来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
    摘要：We study a topological phase diagram of a ferromagnetic topological nodal semimetal. We consider a lattice model for three dimensional topological insulators with ferromagnetic ordering. The exchange coupling between the magnetization and the electron spin leads to the nodal band...
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      Temperature Dependence of Heat Capacity in the Kitaev-Heisenberg Model on a Honeycomb Lattice
      作者：Takafumi Suzuki , Youhei Yamaji
      来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
      摘要：We calculate the temperature dependence of the heat capacity per spin, C ( T ), for quantum and classical Kitaev-Heisenberg (qKH and cKH, respectively) models on a honeycomb lattice. In the qKH model, C ( T ) shows two peaks in the magnetically ordered phase near the Kitaev spin-...
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        Haldane Gaps of Large- S Heisenberg Antiferromagnetic Chains and Asymptotic Behavior
        作者：Hiroki Nakano , Norikazu Todoroki , Tôru Sakai
        来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
        摘要：The one-dimensional Heisenberg antiferromagnets of large-integer- S spins are studied; their Haldane gaps are estimated by the numerical diagonalization method for S = 5 and 6. We successfully obtain a monotonically increasing sequence of finite-size energy difference data c...
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          Unconventional Multi-gap Superconductivity and Antiferromagnetic Spin Fluctuations in New Iron-arsenide LaFe2As2 in Heavily Electron-doped Regime
          作者：Takayoshi Kouchi , Mitsuharu Yashima , Hidekazu Mukuda ...
          来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
          摘要：We report 75As-NMR/NQR results on new iron-arsenide compounds (La0.5− x Na0.5+ x )Fe2As2. The parent compound x = 0 exhibits a stripe-type antiferromagnetic (AFM) order below T N = 130 K. The measur...
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            Substitution Effects on Magnetic Ground States with Geometrical Spin Frustration in Triangular Spin Tubes Formed in CsCrF4 and α-KCrF4
            作者：Hirotaka Manaka , Hideki Morita , Takuei Akasaka ...
            来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
            摘要：A chemical-impurity substitution in a geometrical spin-frustrated antiferromagnet often produces an unconventional antiferromagnetic state, because the ground states of the pure systems maintain a delicate balance among the spins. To investigate the changes introduced by ran...
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              Erratum: “Brillouin Light Scattering from Magnetic Excitations in Superparamagnetic and Ferromagnetic Co–Al–O Granular Films” [J. Phys. Soc. Jpn. 87, 044707 (2018)]
              作者：Akira Yoshihara , Toshiteru Maeda , Satoshi Kawamura ...
              来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (11)JPS
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                Effect of Coulomb Interaction and Disorder on Density of States in Conventional Superconductors
                作者：Takanobu Jujo
                来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (10)JPS
                摘要：The density of states of the disordered s-wave superconductor is calculated perturbatively. The effect of Coulomb interaction on diffusively moving electrons in the normal state has been known before, but in the superconducting state both diffuson and the screened Coulomb interac...
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                  Self-Assembly Formed by Spherical Patchy Particles with Long-Range Attraction
                  作者：Masahide Sato
                  来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (10)JPS
                  摘要：We report on self-assemblies formed from spherical patchy particles interacting by a long-range attraction through a patch region in a two-dimensional system. We performed Monte Carlo simulations to find stable structures in a system with constant number of particles under c...
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                    Noncollinear Magnetic Structure with Spin-dependent van der Waals Density Functional Approach: β-phase Solid Oxygen
                    作者：Mega Christivana , Masao Obata , Tatsuki Oda
                    来源：[J].Journal of the Physical Society of Japan(IF 2.087), 2019, Vol.88 (10)JPS
                    摘要：We developed and implemented the van der Waals density functional with noncollinear magnetism. To demonstrate the validity of the current implementation, we applied the method to the β-phase of solid oxygen having spins with 120° spin orientation. We show that the van der Wa...
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