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Journal Articles

Effective extraction of Pt(IV) as [PtCl$$_{6}$$]$$^{2-}$$ from hydrochloric acid using a simple urea extractant

Ueda, Yuki; Morisada, Shintaro*; Kawakita, Hidetaka*; Wenzel, M.*; Weigand, J. J.*; Oto, Keisuke*

Separation and Purification Technology, 277, p.119456_1 - 119456_8, 2021/12

no abstracts in English

Journal Articles

Coexisting normal and intruder configurations in $$^{32}$$Mg

Kitamura, Noritaka*; Wimmer, K.*; Poves, A.*; Shimizu, Noritaka*; Tostevin, J. A.*; Bader, V. M.*; Bancroft, C.*; Barofsky, D.*; Baugher, T.*; Bazin, D.*; et al.

Physics Letters B, 822, p.136682_1 - 136682_7, 2021/11

no abstracts in English

Journal Articles

Half-integer Shapiro-steps in superconducting qubit with a $$pi$$-Josephson junction

Mori, Michiyasu; Maekawa, Sadamichi

Applied Physics Express, 14(10), p.103001_1 - 103001_4, 2021/10

 Times Cited Count:0

Journal Articles

The $$^{59}$$Fe(n,$$gamma$$)$$^{60}$$Fe cross section from the surrogate ratio method and its effect on the $$^{60}$$Fe nucleosynthesis

Yan, S. Q.*; Li, X. Y.*; Nishio, Katsuhisa; Lugaro, M.*; Li, Z. H.*; Makii, Hiroyuki; Pignatari, M.*; Wang, Y. B.*; Orlandi, R.; Hirose, Kentaro; et al.

Astrophysical Journal, 919(2), p.84_1 - 84_7, 2021/10

Journal Articles

Chiral-spin rotation of non-collinear antiferromagnet by spin-orbit torque

Takeuchi, Yutaro*; Yamane, Yuta*; Yoon, J.-Y.*; Ito, Ryuichi*; Jinnai, Butsurin*; Kanai, Shun*; Ieda, Junichi; Fukami, Shunsuke*; Ono, Hideo*

Nature Materials, 20(10), p.1364 - 1370, 2021/10

 Times Cited Count:2 Percentile:0(Chemistry, Physical)

Journal Articles

Implications of the $$Z_{cs}$$(3985) and $$Z_{cs}$$(4000) as two different states

Meng, L.*; Wang, B.*; Wang, G.-J.*; Zhu, S.-L.*

Science Bulletin, 66(20), p.2065 - 2071, 2021/10

Two recently found tetraquark resonances $$Zcs$$(3985) and $$Zcs$$(4000) are studied in a solvable nonrelativistic effective field theory.We include the possible violations of heavy quark spin symmetry and SU(3) flavor symmetry in a comprehensive approach. Our results show that the decay rates can be used to judge whether these resonances can be different states or not.

Journal Articles

Heavy hadronic molecules coupled with multiquark states

Yamaguchi, Yasuhiro; Garc$'i$a-Tecocoatzi, H.*; Giachino, A.*; Hosaka, Atsushi; Santopinto, E.*; Takeuchi, Sachiko*; Takizawa, Makoto*

Few-Body Systems, 62(3), p.33_1 - 33_7, 2021/09

 Times Cited Count:0 Percentile:0.01(Physics, Multidisciplinary)

We investigate the hidden-charm pentaquarks as hadronic molecules of $$Lambda_cbar{D}^{(ast)}$$ and $$Sigma_c^{(ast)}bar{D}^{(ast)}$$ coupled to a $$uudcbar{c}$$ compact core by employing an interaction satisfying the heavy quark and chiral symmetries. Our model can consistently explain the masses and decay widths of $$P_c^+(4312)$$, $$P_c^+(4440)$$ and $$P_c^+(4457)$$ with spin parity assignments $$J^P=1/2^-$$, $$3/2^-$$ and $$1/2^-$$, respectively. We find that the mass ordering is dominantly determined by the short-range interaction given by coupling to the compact core, while the decay widths by the tensor force of the one-pion exchange.

Journal Articles

Nodal lines and boundary modes in topological Dirac semimetals with magnetism

Araki, Yasufumi; Watanabe, Jin*; Nomura, Kentaro*

Journal of the Physical Society of Japan, 90(9), p.094702_1 - 094702_9, 2021/09

 Times Cited Count:0

While nodal-line semimetals with magnetism have been theoretically predicted and experimentally observed in a few compounds, idea on the relation between the magnetic order and the electronic structure is still limited. We theoretically explore the electronic structure in bulk and boundary of such a magnetic nodal-line state by introducing magnetism in topological Dirac semimetal (TDSM). TDSMs, such as $$mathrm{Cd_3 As_2}$$ and $$mathrm{Na_3 Bi}$$,are characterized by a pair of spin-degenerate Dirac points protected by rotational symmetries of crystals. By introducing local magnetic moments coupled to the electron spins in the lattice model of TDSM, we show that the TDSM can turn into either a Weyl semimetal or a nodal-line semimetal, which is determined by the orbital dependence in the exchange coupling and the direction of magnetization formed by the magnetic moments. In this magnetic nodal-line semimetal state, we find zero modes with drumhead-like band structure at the boundary that are characterized by the topological number of $$mathbb{Z}$$. Those zero modes are numerically demonstrated by introducing magnetic domain walls in the lattice model.

Journal Articles

Spin-flop phase in a honeycomb antiferromagnet Mn$$_{0.84}$$Mg$$_{0.16}$$TiO$$_{3}$$

Shamoto, Shinichi; Yamauchi, Hiroki; Ikeuchi, Kazuhiko*; Lee, M. K.*; Chang, L.-J.*; Garlea, V. O.*; Hwang, I. Y.*; Lee, K. H.*; Chung, J.-H.*

Journal of the Physical Society of Japan, 90(9), p.093703_1 - 093703_4, 2021/09

 Times Cited Count:0

no abstracts in English

Journal Articles

Optomagnonic Josephson effect in antiferromagnets

Nakata, Koki

Physical Review B, 104(10), p.104402_1 - 104402_12, 2021/09

 Times Cited Count:0

Combining advanced technologies of optics and antiferromagnetic spintronics, we present a method to realize ultrafast Josephson spin currents through the optomagnonic Barnett effect by using macroscopic coherence of magnon condensates.

Journal Articles

Half-integer Shapiro steps in strong ferromagnetic Josephson junctions

Yao, Y.*; Cai, R.*; Yang, S.-H.*; Xing, W.*; Ma, Y.*; Mori, Michiyasu; Ji, Y.*; Maekawa, Sadamichi; Xie, X.-C.*; Han, W.*

Physical Review B, 104(10), p.104414_1 - 104414_6, 2021/09

 Times Cited Count:0

Journal Articles

Lifetime measurements of excited states in $$^{55}$$Cr

Kleis, H.*; Seidlitz, M.*; Blazhev, A.*; Kaya, L.*; Reiter, P.*; Arnswald, K.*; Dewald, A.*; Droste, M.*; Fransen, C.*; M$"o$ller, O.*; et al.

Physical Review C, 104(3), p.034310_1 - 034310_9, 2021/09

 Times Cited Count:0

no abstracts in English

Journal Articles

Heavy baryon spectrum with chiral multiplets of scalar and vector diquarks

Kim, Y.*; Liu, Y.-R.*; Oka, Makoto; Suzuki, Kei

Physical Review D, 104(5), p.054012_1 - 054012_18, 2021/09

 Times Cited Count:0

Chiral effective theory of scalar and vector diquarks is formulated according to the linear sigma model. The main application is to describe the ground and excited states of singly heavy baryons with a charm or bottom quark. Applying the potential quark model between the diquark and the heavy quark ($$Q=c, b$$), we construct a heavy-quark--diquark model. The spectra of the positive- and negative-parity states of $$Lambda_Q$$, $$Sigma_Q$$, $$Xi^{(')}_Q$$ and $$Omega_Q$$ are obtained. The masses and interaction parameters of the effective theory are fixed partly from the lattice QCD data and also from fitting low-lying heavy baryon masses. We find that the negative parity excited states of $$Xi_Q$$ (flavor $$bar{bf 3}$$) are different from those of $$Lambda_Q$$, because of the inverse hierarchy of the pseudoscalar diquark. On the other hand, $$Sigma_Q, Xi'_Q$$ and $$Omega_Q$$ (flavor $${bf 6}$$) baryons have similar spectra. We compare our results of the heavy-quark-diquark model with experimental data as well as the quark model.

Journal Articles

Probing the long-range structure of the $$T^{+}_{cc}$$ with the strong and electromagnetic decays

Meng, L.*; Wang, G.-J.*; Wang, B.*; Zhu, S.-L.*

Physical Review D, 104(5), p.L051502_1 - L051502_8, 2021/09

We investigate the kinetically allowed strong and electromagnetic decays of the recently observed $$T^+_{cc}$$. Our results show that the decay width of $$T_{cc}to D^0D^0pi^+$$ is the largest one, which is just the experimental observation channel. Our theoretical total strong and radiative widths are in favor of the $$T_{cc}$$ as a $$D^{*+}D^0$$ dominated bound state. Our calculation is cutoff-independent and without prior isospin assignment. The absolute partial widths and ratios of the different decay channels can be used to test the structure of $$T_{cc}$$ state when the updated experimental results are available.

Journal Articles

The Negative-parity spin-1/2 $$Lambda$$ baryon spectrum from lattice QCD and effective theory

Pavao, R.*; Gubler, P.; Fernandez-Soler, P.*; Nieves, J.*; Oka, Makoto; Takahashi, Toru*

Physics Letters B, 820, p.136473_1 - 136473_8, 2021/09

Journal Articles

Survival probabilities of charmonia as a clue to measure transient magnetic fields

Iwasaki, Sachio*; Jido, Daisuke*; Oka, Makoto; Suzuki, Kei

Physics Letters B, 820, p.136498_1 - 136498_6, 2021/09

We investigate time evolution of $$S$$-wave charmonium populations under a time-dependent homogeneous magnetic field and evaluate survival probabilities of the low-lying charmonia to the goal of estimating the magnetic field strength at heavy-ion collisions. Our approach implements mixing between different spin eigenstates and transitions to radially excited states. We show that the survival probabilities can change even by an extremely short magnetic field. Furthermore, we find that the survival probabilities depend on the initial spin states. We propose the sum of the survival probabilities over spin partners as an observable insensitive to the initial states. We also find that the sum can be approximately given as a function of $$sigma B_0^2$$ with a duration time $$sigma$$ and the maximum strength of the magnetic field $$B_0$$.

Journal Articles

Selective extraction of platinum(IV) from the simulated secondary resources using simple secondary amide and urea extractants

Ueda, Yuki; Morisada, Shintaro*; Kawakita, Hidetaka*; Oto, Keisuke*

Separations (Internet), 8(9), p.139_1 - 139_15, 2021/09

no abstracts in English

Journal Articles

Journal Articles

Ortho-para conversion of molecularly chemisorbed H$$_{2}$$ on Pd(210)

Ueta, Hirokazu; Fukutani, Katsuyuki

Vacuum and Surface Science, 64(9), p.430 - 434, 2021/09

Journal Articles

Structure of the {U$$_{13}$$} polyoxo cluster U$$_{13}$$O$$_{8}$$Cl$$_{x}$$(MeO)$$_{38-x}$$ (x = 2.3, MeO = methoxide)

Fichter, S.*; Radoske, T.*; Ikeda, Atsushi

Acta Crystallographica Section E; Crystallographic Communications (Internet), 77(8), p.847 - 852, 2021/08

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