Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Buyers, W"'
Autor:
Sarte, P. M., Cowley, R. A., Rodriguez, E. E., Pachoud, E., Le, D., Garcia-Sakai, V., Taylor, J. W., Frost, C. D., Prabhakaran, D., MacEwen, C., Kitada, A., Browne, A. J., Songvilay, M., Yamani, Z., Buyers, W. J. L., Attfield, J. P., Stock, C.
Publikováno v:
Phys. Rev. B 98, 024415 (2018)
Neutron spectroscopy was applied to study the magnetic interactions of orbitally degenerate Co$^{2+}$ on a host MgO rocksalt lattice where no long range spin or orbital order exists. The paramagnetic nature of the substituted monoxide Co$_{0.03}$Mg$_
Externí odkaz:
http://arxiv.org/abs/1807.05012
Neutron scattering played an important role in the experimental exploration of the theoretical ideas of Thouless, Haldane, and Kosterlitz, who won the Nobel Prize in Physics in 2016. This article reviews the signatures of Haldane's predicted topologi
Externí odkaz:
http://arxiv.org/abs/1711.03862
Autor:
Williams, T. J., Barath, H., Yamani, Z., Rodriguez-Riviera, J. A., Leão, J. B., Garrett, J. D., Luke, G. M., Buyers, W. J. L., Broholm, C.
Publikováno v:
Phys. Rev. B 95, 195171 (2017)
We report a neutron scattering study of the magnetic excitation spectrum in each of the three temperature and pressure driven phases of URu$_2$Si$_2$. We find qualitatively similar excitations throughout the (H0L) scattering plane in the hidden order
Externí odkaz:
http://arxiv.org/abs/1607.00967
Autor:
Yiu, Yuen, Aczel, A. A., Granroth, G. E., Abernathy, D. L., Stone, M. B., Buyers, W. J. L., Lin, J. Y. Y., Samolyuk, G. D., Stocks, G. M., Nagler, S. E.
Publikováno v:
Phys. Rev. B 93, 014306 (2016)
High energy vibrational scattering in the binary systems UC and US is measured using time-of-flight inelastic neutron scattering. A clear set of well-defined peaks equally separated in energy is observed in UC, corresponding to harmonic oscillations
Externí odkaz:
http://arxiv.org/abs/1508.00930
Autor:
Yamani, Zahra, Buyers, W. J. L., Wang, F., Kim, Y-J., Chung, J. -H., Chang, S., Gehring, P. M., Gasparovic, G., Stock, C., Broholm, C. L., Baglo, J. C., Liang, Ruixing, Bonn, D. A., Hardy, W. N.
Publikováno v:
Phys. Rev. B 91, 134427 (2015)
Neutron scattering from high-quality YBa2Cu3O6.33 (YBCO6.33) single crystals with a Tc of 8.4 K shows no evidence of a coexistence of superconductivity with long-range antiferromagnetic order at this very low, near-critical doping of p~0.055. However
Externí odkaz:
http://arxiv.org/abs/1504.07942
Autor:
Ross, K. A., Harriger, L., Yamani, Z., Buyers, W. J. L., Garrett, J. D., Menovsky, A. A., Mydosh, J. A., Broholm, C. L.
Neutron diffraction is used to examine the polarization of weak static antiferromagnetism in high quality single crystalline URu2Si2. As previously documented, elastic Bragg-like diffraction develops for temperature T
Externí odkaz:
http://arxiv.org/abs/1402.2689
Autor:
Oh, Joosung, Le, Manh Duc, Jeong, Jaehong, Lee, Jung-hyun, Woo, Hyungje, Song, Wan-Young, Perring, T. G., Buyers, W. J. L., Cheong, S-W., Park, Je-Geun
Publikováno v:
Phys. Rev. Lett. 111, 257202 (2013)
The breakdown of magnons, the quasiparticles of magnetic systems, has rarely been seen. By using an inelastic neutron scattering technique we report the observation of spontaneous magnon decay in multiferroic LuMnO$_3$, a simple two-dimensional Heise
Externí odkaz:
http://arxiv.org/abs/1311.6652
Neutron scattering measurements of $dd$ and spin-orbit excitations below the Mott-Hubbard gap in CoO
Autor:
Cowley, R. A., Buyers, W. J. L., Stock, C., Yamani, Z., Frost, C., Taylor, J. W., Prabhakaran, D.
Publikováno v:
Phys. Rev. B 88, 205117 (2013)
Neutron scattering is used to investigate the single-ion spin and orbital excitations below the Mott-Hubbard gap in CoO. Three excitations are reported at 0.870 $\pm$ 0.009 eV, 1.84 $\pm$ 0.03, and 2.30 $\pm$ 0.15 eV. These were parameterized within
Externí odkaz:
http://arxiv.org/abs/1310.6207
Publikováno v:
Phys. Rev. B 86, 235104 (2012)
We report inelastic neutron scattering measurements in the hidden order state of URu$_{2-x}$Re$_x$Si$_2$ with $x$ = 0.10. We observe that towards the ferromagnetic quantum critical point induced by the negative chemical pressure of Re-doping, the gap
Externí odkaz:
http://arxiv.org/abs/1209.2098
Autor:
Aczel, A. A., Granroth, G. E., MacDougall, G. J., Buyers, W. J. L., Abernathy, D. L., Samolyuk, G. D., Stocks, G. M., Nagler, S. E.
Publikováno v:
Nature Communications 3, 1124 (2012)
The vibrational excitations of crystalline solids corresponding to acoustic or optic one phonon modes appear as sharp features in measurements such as neutron spectroscopy. In contrast, many-phonon excitations generally produce a complicated, weak, a
Externí odkaz:
http://arxiv.org/abs/1206.3597