Direct observation of topological magnon polarons in a multiferroic material

Bao, S.*; Gu, Z.-L.*; Shangguan, Y.*; Huang, Z.*; Liao, J.*; Zhao, X.*; Zhang, B.*; Dong, Z.-Y.*; Wang, W.*; Kajimoto, Ryoichi; et al.

Nature Communications (Internet), 14, p.6093_1 - 6093_9, 2023/09

https://doi.org/10.1038/s41467-023-41791-9

Evidence for strong correlations at finite temperatures in the dimerized magnet NaCuTeO

Shangguan, Y.*; Bao, S.*; Dong, Z.-Y.*; Cai, Z.*; Wang, W.*; Huang, Z.*; Ma, Z.*; Liao, J.*; Zhao, X.*; Kajimoto, Ryoichi; et al.

Physical Review B, 104(22), p.224430_1 - 224430_8, 2021/12

https://doi.org/10.1103/PhysRevB.104.224430

Spin dynamics of a magnetic Weyl semimetal SrMnSb

Cai, Z.*; Bao, S.*; Wang, W.*; Ma, Z.*; Dong, Z.-Y.*; Shangguan, Y.*; Wang, J.*; Ran, K.*; Li, S.*; Kamazawa, Kazuya*; et al.

Physical Review B, 101(13), p.134408_1 - 134408_10, 2020/04

AA2020-0050.pdf:5.09MB

https://doi.org/10.1103/PhysRevB.101.134408

Dirac matters provide a platform for exploring the interplay of their carriers with other quantum phenomena. SrMnSb has been proposed to be a magnetic Weyl semimetal and provides an excellent platform to study the coupling between Weyl fermions and magnons. We performed inelastic neutron scattering measurements on single crystals of SrMnSb, and found The dispersion in the magnetic Mn layer extends up to about 76 meV, while that between the layers has a narrow band width of 6 meV. Despite the coexistence of Weyl fermions and magnons, we find no clear evidence that the magnetic dynamics are influenced by the Weyl fermions in SrMnSb, possibly because that the Weyl fermions and magnons reside in the Sb and Mn layers separately, and the interlayer coupling is weak due to the quasi-two-dimensional nature of the material.

Hardening in thermally-aged Fe-Cr binary alloys; Statistical parameters of atomistic configuration

Suzudo, Tomoaki; Nagai, Yasuyoshi*; Schwen, D.*; Caro, A.*

Acta Materialia, 89, p.116 - 122, 2015/05

https://doi.org/10.1016/j.actamat.2015.02.013

By exploiting Monte Carlo methodology and molecular dynamics, we computationally simulate the spinodal decomposition of iron-chromium binary alloys and analyze the relationship between the increase of yield stress induced by the phase separation phenomenon, and statistical parameters of the atomistic configuration. We successfully model the experimentally-discovered proportional relationship between the hardness and the variation parameter (or V), and also found that the adequacy of the parameter V as an empirical indicator of hardening is limited, because it does not properly capture short-range atomistic configurations that influence the hardening. We suggest that the short-range-order parameter has more potential to become universal descriptor of the phenomenon.

Two-proton knockout from Mg; Intruder amplitudes in Ne and implications for the binding of F

Fallon, P.*; Rodriguez-Vieitez, E.*; Macchiavelli, A. O.*; Gade, A.*; Tostevin, J. A.*; Adrich, P.*; Bazin, D.*; Bowen, M.*; Campbell, C. M.*; Clark, R. M.*; et al.

Physical Review C, 81(4), p.041302_1 - 041302_5, 2010/04

https://doi.org/10.1103/PhysRevC.81.041302

no abstracts in English

Spectroscopy of Mg; Interplay of normal and intruder configurations at the neutron-rich boundary of the "Island of Inversion"

Gade, A.*; Adrich, P.*; Bazin, D.*; Bowen, M. D.*; Brown, B. A.*; Campbell, C. M.*; Cook, J. M.*; Ettenauer, S.*; Glasmacher, T.*; Kemper, K. W.*; et al.

Physical Review Letters, 99(7), p.072502_1 - 072502_4, 2007/08

https://doi.org/10.1103/PhysRevLett.99.072502

no abstracts in English

Self-guiding of 100 TW femtosecond laser pulses in centimeter-scale underdense plasma

Chen, L.-M.; Kotaki, Hideyuki; Nakajima, Kazuhisa*; Koga, J. K.; Bulanov, S. V.; Tajima, Toshiki; Gu, Y. Q.*; Peng, H. S.*; Wang, X. X.*; Wen, T. S.*; et al.

Physics of Plasmas, 14(4), p.040703_1 - 040703_4, 2007/04

https://doi.org/10.1063/1.2720374

An experiment for the laser self-guiding studies has been carried out with 100 TW laser pulse interaction with the long underdense plasma. Formation of extremely long plasma channel with its length, about 10 mm, 20 times above the Rayleigh length is observed. The self-focusing channel features such as the laser pulse significant bending and the electron cavity formation are demonstrated experimentally for the first time.

Investigation of polonium removal systems for lead-bismuth cooled fast reactors using a tellurium surrogate -part III

Ohno, Shuji; P. Loewen, Eric*; Auman, L. E.*

Proceedings of 13th International Conference on Nuclear Engineering (ICONE-13), 0 Pages, 2005/05

The alkaline extraction method and electro-deposition method have been investigated at the Idaho National Engineering and Environmental Laboratory to remove polonium from a lead-bismuth cooled reactor. Tellurium was used as a surrogate for polonium for these experiments to quantify the migration. From the chemical kinetic measurements of extraction tests using NaOH as alkaline, first and second order alkaline extraction rate constants were suggested to be: k1=300exp(-64300/RT), k2=42700exp(-122400/RT), where R=8.31J/mol/K and T is in degrees K. Some experimental data showed tellurium moving from NaOH back into LBE, allowing the measurement of the reverse rate reaction constant. We suggest the following linear fit to determine the equilibrium constant as a function of the temperature: Log(K)=-3195/T+5.199. The electro-deposition experiments were initiated. The limited number of runs provided the information of the effect of electrodes surface area and temperature on the tellurium collection characteristics. However, further experiments are necessary for acquiring more knowledge. This paper is a continuation of the results reported in the previous ICONE papers: ICONE11-36614 and ICONE12-49396.

Effect of pressure on nucleation and growth in the ZrTiCuNiBe bulk glass forming alloy investigated using in situ X-ray diffraction

Wang, W. H.*; Okada, Taku; Wen, P.*; Wang, X. L.*; Pan, M. X.*; Zhao, D. Q.*; Utsumi, Wataru

Physical Review B, 68(18), p.184105_1 - 184105_6, 2003/11

https://doi.org/10.1103/PhysRevB.68.184105

no abstracts in English

Magnetic structure, phase diagram, and a new type of spin-flop transition dominated by higher order interaction in a localized 5 system UPdSi

Koike, Yoshihiro; Metoki, Naoto; Haga, Yoshinori; McEwen, K. A.*; Kogi, Masafumi*; Yamamoto, Ryunosuke*; Aso, Naofumi*; Tateiwa, Naoyuki*; Komatsubara, Takemi*; Kimura, Noriaki*; et al.

Physical Review Letters, 89(7), p.077202_1 - 077202_4, 2002/08

https://doi.org/10.1103/PhysRevLett.89.077202

no abstracts in English