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Journal Articles

Martensitic transformation in CrCoNi medium-entropy alloy at cryogenic temperature

Naeem, M.*; Zhou, H.*; He, H.*; Harjo, S.; Kawasaki, Takuro; Lan, S.*; Wu, Z.*; Zhu, Y.*; Wang, X.-L.*

Applied Physics Letters, 119(13), p.131901_1 - 131901_7, 2021/09

 Times Cited Count:3 Percentile:74.92(Physics, Applied)

Journal Articles

Mass spectrum and strong decays of tetraquark $$bar c bar s qq$$ states

Wang, G.-J.*; Meng, L.*; Xiao, L.-Y.*; Oka, Makoto; Zhu, S.-L.*

European Physical Journal C, 81(2), p.188_1 - 188_12, 2021/02

 Times Cited Count:11 Percentile:93.48(Physics, Particles & Fields)

The mass spectrum and strong decays of the S-wave $$bar c bar s qq$$ states are studied in the compact tetraquark scenario with the quark model. The model consists of the Coulomb, the linear confinement, and the hyperfine interactions. We calculate their decay amplitudes into the $$D^{-(*)}K^{(*)}$$ channels using the quark interchange method. The mass and decay width of the $$I(J^P)=1(0^+)$$ state are $$M = 2941$$ MeV and $$Gamma_X=26.6$$ MeV, respectively, which indicates that it might be a good candidate for the recently observed $$X^0(2900)$$ state. We also obtain an isospin partner state $$I(J^P)= 0(0^+)$$ with $$M =2649$$ MeV and $$Gamma_{Xto D^- K}= 48.1$$ MeV, respectively. Future experimental search for $$X(2649)$$ will be very helpful.

Journal Articles

Negative Te spin polarization responsible for ferromagnetic order in the doped topological insulator V$$_{0.04}$$(Sb$$_{1-x}$$Bi$$_{x}$$)$$_{1.96}$$Te$$_{3}$$

Ye, M.*; Xu, T.*; Li, G.*; Qiao, S.*; Takeda, Yukiharu; Saito, Yuji; Zhu, S.-Y.*; Nurmamat, M.*; Sumida, Kazuki*; Ishida, Yukiaki*; et al.

Physical Review B, 99(14), p.144413_1 - 144413_7, 2019/04


 Times Cited Count:9 Percentile:62.33(Materials Science, Multidisciplinary)

Journal Articles

Second-order structural transition in the superconductor La$$_3$$Co$$_4$$Sn$$_{13}$$

Cheung, Y. W.*; Zhang, J. Z.*; Zhu, J. Y.*; Yu, W. C.*; Hu, Y. J.*; Wang, D. G.*; Otomo, Yuka*; Iwasa, Kazuaki*; Kaneko, Koji; Imai, Masaki*; et al.

Physical Review B, 93(24), p.241112_1 - 241112_5, 2016/06


 Times Cited Count:13 Percentile:58.98(Materials Science, Multidisciplinary)

Journal Articles

Carrier-mediated ferromagnetism in the magnetic topological insulator Cr-doped (Sb,Bi)$$_{2}$$Te$$_{3}$$

Ye, M.*; Li, W.*; Zhu, S.-Y.*; Takeda, Yukiharu; Saito, Yuji; Wang, J.*; Pan, H.*; Nurmamat, M.*; Sumida, Kazuki*; Ji, F.*; et al.

Nature Communications (Internet), 6, p.8913_1 - 8913_7, 2015/11


 Times Cited Count:45 Percentile:90.39(Multidisciplinary Sciences)

Magnetically doped topological insulators are predicted to exhibit exotic phenomena including the quantized anomalous Hall effect and a dissipationless transport, which facilitate the development of low-power-consumption devices using electron spins. The realization of the quantized anomalous Hall effect is so far restricted to the Cr-doped (Sb,Bi)$$_{2}$$Te$$_{3}$$ system at extremely low temperature; however, the microscopic origin of its ferromagnetism is poorly understood. Here we present an element-resolved study for Cr-doped (Sb,Bi)$$_{2}$$Te$$_{3}$$ using X-ray magnetic circular dichroism to unambiguously show that the long-range magnetic order is mediated by the p-hole carriers of the host lattice, and the interaction between the Sb(Te) p and Cr d states is crucial.

Journal Articles

Spectroscopic evidence of band Jahn-Teller distortion upon martensitic phase transition in Heusler-type Ni-Fe(Co)-Ga ferromagnetic shape-memory alloy films

Sumida, Kazuki*; Shirai, Kaito*; Zhu, S.-Y.*; Taniguchi, Masaki*; Ye, M.*; Ueda, Shigenori*; Takeda, Yukiharu; Saito, Yuji; Aseguinolaza, I. R.*; Barandiar$'a$n, J. M.*; et al.

Physical Review B, 91(13), p.134417_1 - 134417_6, 2015/04

 Times Cited Count:5 Percentile:26.91(Materials Science, Multidisciplinary)

Journal Articles

X-ray magnetic circular dichroism for Co$$_{x}$$Fe$$_{4-x}$$N (x = 0, 3, 4) films grown by molecular beam epitaxy

Ito, Keita*; Sanai, Tatsunori*; Yasutomi, Yoko*; Zhu, S.-Y.*; Toko, Kaoru*; Takeda, Yukiharu; Saito, Yuji; Kimura, Akio*; Suemasu, Takashi*

Journal of Applied Physics, 115(17), p.17C712_1 - 17C712_3, 2014/05

 Times Cited Count:18 Percentile:62.91(Physics, Applied)

Journal Articles

Perpendicular magnetic anisotropy with enhanced orbital moments of Fe adatoms on a topological surface of Bi$$_2$$Se$$_3$$

Ye, M.*; Kuroda, Kenta*; Takeda, Yukiharu; Saito, Yuji; Okamoto, Kazuaki*; Zhu, S.-Y.*; Shirai, Kaito*; Miyamoto, Koji*; Arita, Masashi*; Nakatake, Masashi*; et al.

Journal of Physics; Condensed Matter, 25(23), p.232201_1 - 232201_5, 2013/06

 Times Cited Count:12 Percentile:52.09(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Signature splitting inversion and backbending in $$^{80}$$Rb

He, C.*; Shen, S.*; Wen, S.*; Zhu, L.*; Wu, X.*; Li, G.*; Zhao, Y.*; Yan, Y.*; Bai, Z.*; Wu, Y.*; et al.

Physical Review C, 87(3), p.034320_1 - 034320_10, 2013/03

 Times Cited Count:5 Percentile:41.27(Physics, Nuclear)

Journal Articles

Quasiparticle interference on the surface of Bi$$_{2}$$Se$$_{3}$$ induced by cobalt adatom in the absence of ferromagnetic ordering

Ye. M.*; Eremeev, S. V.*; Kuroda, Kenta*; Krasovskii, E. E.*; Chulkov, E. V.*; Takeda, Yukiharu; Saito, Yuji; Okamoto, Kazuaki*; Zhu, S. Y.*; Miyamoto, Koji*; et al.

Physical Review B, 85(20), p.205317_1 - 205317_5, 2012/05

 Times Cited Count:57 Percentile:90.07(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

ITER test blanket module error field simulation experiments at DIII-D

Schaffer, M. J.*; Snipes, J. A.*; Gohil, P.*; de Vries, P.*; Evans, T. E.*; Fenstermacher, M. E.*; Gao, X.*; Garofalo, A. M.*; Gates, D. A.*; Greenfield, C. M.*; et al.

Nuclear Fusion, 51(10), p.103028_1 - 103028_11, 2011/10

 Times Cited Count:32 Percentile:80.91(Physics, Fluids & Plasmas)

Experiments at DIII-D investigated the effects of ferromagnetic error fields similar to those expected from proposed ITER Test Blanket Modules (TBMs). Studied were effects on: plasma rotation and locking; confinement; L-H transition; edge localized mode (ELM) suppression by resonant magnetic perturbations; ELMs and the H-mode pedestal; energetic particle losses; and more. The experiments used a 3-coil mock-up of 2 magnetized ITER TBMs in one ITER equatorial port. The experiments did not reveal any effect likely to preclude ITER operations with a TBM-like error field. The largest effect was slowed plasma toroidal rotation v across the entire radial profile by as much as $$Delta v/v_{0} sim 50%$$ via non-resonant braking. Changes to global $$Delta n/n_{0}$$, $$Delta v/v_{0}$$ and $$Delta H_{98}/H_{98,0}$$ were $$sim$$3 times smaller. These effects are stronger at higher $$beta$$ and lower $$v_{0}$$. Other effects were smaller.

Journal Articles

Li(Zn,Mn)As as a new generation ferromagnet based on a I-II-V semiconductor

Deng, Z.*; Jin, C. Q.*; Liu, Q. Q.*; Wang, X. C.*; Zhu, J. L.*; Feng, S. M.*; Chen, L. C.*; Yu, R. C.*; Arguello, C.*; Goko, Tatsuo*; et al.

Nature Communications (Internet), 2, p.1425_1 - 1425_5, 2011/08

 Times Cited Count:140 Percentile:93.78(Multidisciplinary Sciences)

In a prototypical ferromagnet (Ga,Mn)As based on a III-V semiconductor, substitution of divalent Mn atoms into trivalent Ga sites leads to severely limited chemical solubility and metastable specimens available only as thin films. The doping of hole carriers via (Ga,Mn) substitution also prohibits electron doping. To overcome these difficulties, Masek et al. theoretically proposed systems based on a I-II-V semiconductor LiZnAs, where isovalent (Zn,Mn) substitution is decoupled from carrier doping with excess/deficient Li concentrations. Here we show successful synthesis of Li$$_{1+y}$$(Zn$$_{1-x}$$Mn$$_x$$)As in bulk materials. We reported that ferromagnetism with a critical temperature of up to 50 K is observed in nominally Li-excess compounds, which have p-type carriers.

Journal Articles

Intruder excitations in $$^{35}$$P

Wiedeking, M.*; Rodriguez-Vieitez, E.*; Fallon, P.*; Carpenter, M. P.*; Clark, R. M.*; Cline, D.*; Cromaz, M.*; Descovich, M.*; Janssens, R. V. F.*; Lee, I.-Y.*; et al.

Physical Review C, 78(3), p.037302_1 - 037302_4, 2008/09

 Times Cited Count:12 Percentile:62.55(Physics, Nuclear)

no abstracts in English

Journal Articles

Plasma-surface interaction, scrape-off layer and divertor physics; Implications for ITER

Lipschultz, B.*; Asakura, Nobuyuki; Bonnin, X.*; Coster, D. P.*; Counsell, G.*; Doerner, R.*; Dux, R.*; Federici, G.*; Fenstermacher, M. E.*; Fundamenski, W.*; et al.

Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM), 8 Pages, 2007/03

The work of the ITPA SOL/divertor group is reviewed. The high-n nature of ELMs has been elucidated and new measurements have determined that they carry 10-20% of the ELM energy to the far SOL with implications for ITER limiters and the upper divertor. Analysis of ELM measurements imply that the ELM continuously loses energy as it travels across the SOL. The prediction of ITER divertor disruption power loads have been reduced as a result of finding that the divertor footprint broadens during the thermal quench and that the plasma can lose up to 80% of its thermal energy before the thermal quench (not for VDEs or ITBs). Disruption mitigation through massive gas puffing has been successful at reducing divertor heat loads but estimates of the effect on the main chamber walls indicate 10s of kG of Be would be melted/mitigation. Long-pulse studies have shown that the fraction of injected gas that can be recovered after a discharge decreases with discharge length. The use of mixed materials gives rise to a number of potential processes.

Journal Articles

Modelling of the extraction of uranium with supercritical carbon dioxide

Clifford, A. A.*; Zhu, S.*; Smart, N. G.*; Lin, Y.*; Wai, C. M.*; Yoshida, Zenko; Meguro, Yoshihiro; Iso, Shuichi

Journal of Nuclear Science and Technology, 38(6), p.433 - 438, 2001/06

 Times Cited Count:14 Percentile:70.5(Nuclear Science & Technology)

no abstracts in English

Oral presentation

Laser electron acceleration in cm-scale capillary-discharge plasma channel

Kameshima, Takashi; Kotaki, Hideyuki; Kando, Masaki; Daito, Izuru; Kawase, Keigo; Fukuda, Yuji; Chen, L. M.*; Homma, Takayuki; Kondo, Shuji; Esirkepov, T. Z.; et al.

no journal, , 

The acceleration method of laser plasma electron acceleration has very strong electric field, however, the acceleration length is veryshort. Hence, the energy gain of electron beams were confined to be approximately 100 MeV. Recently, this problem was solved by using discharge capillary. The feature of plasma was used that high dense plasma has low refractive index. Distributing plasma inside capillary as low dense plasma is in the center of capillary and high dense plasma is in the external side of capillary can make a laser pulse propaget inside capillary with initial focal spot size. Experiments with capillary were performed in China Academy of Engineering Physics (CAEP) and Japan Atomic Energy Agency (JAEA). We obtained the results of 4.4 J laser pulse optical guiding in 4 cm capillary and 0.56 GeV electron production in CAEP in 2006, and 1 J laser pulse optical guiding in 4 cm capillary and electron beams productions.

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