Zobrazeno 1 - 10
of 533
pro vyhledávání: '"Greenberg, E P"'
Publikováno v:
Planet. Sci. J. 1 39 (2020)
Astrophysical measurements have shown that some stars have sufficiently high carbon-to-oxygen ratios such that the planets they host would be mainly composed of carbides instead of silicates. We studied the behavior of silicon carbide in the presence
Externí odkaz:
http://arxiv.org/abs/2005.03175
Autor:
Greenberg, E., Nazarov, R., Landa, A., Ying, J., Hood, R. Q., Hen, B., Jeanloz, R., Prakapenka, V. B., Struzhkin, V. V., Rozenberg, G. Kh., Leonov, I.
Publikováno v:
Phys. Rev. B 107, L241103 (2023)
Iron-bearing oxides undergo a series of pressure-induced electronic, spin and structural transitions that can cause seismic anomalies and dynamic instabilities in Earth's mantle and outer core. We employ x-ray diffraction and x-ray emission spectrosc
Externí odkaz:
http://arxiv.org/abs/2004.00652
Akademický článek
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Autor:
Kong, P. P., Minkov, V. S., Kuzovnikov, M. A., Besedin, S. P., Drozdov, A. P., Mozaffari, S., Balicas, L., Balakirev, F. F., Prakapenka, V. B., Greenberg, E., Knyazev, D. A., Eremets, M. I.
The discovery of high-temperature conventional superconductivity in H3S with a critical temperature of Tc=203 K was followed by the recent record of Tc ~250 K in the face-centered cubic (fcc) lanthanum hydride LaH10 compound. It was realized in a new
Externí odkaz:
http://arxiv.org/abs/1909.10482
Akademický článek
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Autor:
Drozdov, A. P., Kong, P. P., Minkov, V. S., Besedin, S. P., Kuzovnikov, M. A., Mozaffari, S., Balicas, L., Balakirev, F., Graf, D., Prakapenka, V. B., Greenberg, E., Knyazev, D. A., Tkacz, M., Eremets, M. I.
The discovery of superconductivity at 203 K in H3S brought attention back to conventional superconductors whose properties can be described by the Bardeen-Cooper-Schrieffer (BCS) and the Migdal-Eliashberg theories. These theories predict that high, a
Externí odkaz:
http://arxiv.org/abs/1812.01561
Autor:
Xu, W. M., Hearne, G. R., Layek, S., Levy, D., Pasternak, M. P., Rozenberg, G. Kh., Greenberg, E.
Publikováno v:
Phys. Rev. B 97, 085120 (2018)
X-ray diffraction pressure studies at room temperature demonstrate that the spinel FeAl$_{2}$O$_{4}$ transforms to a tetragonal phase at ~18 GPa. This tetragonal phase has a highly irregular unit-cell volume versus pressure dependence up to ~45 GPa,
Externí odkaz:
http://arxiv.org/abs/1809.09599
Site-specific spin crossover in Fe$_{2}$TiO$_{4}$ post-spinel under high pressures to near a megabar
Autor:
Xu, W. M., Hearne, G. R., Layek, S., Levy, D., Itié, J-P., Pasternak, M. P., Rozenberg, G. Kh., Greenberg, E.
Publikováno v:
Phys. Rev. B 96, 045108 (2017)
X-ray diffraction studies to ~90 GPa at room temperature show that Fe$_{2}$TiO$_{4}$ ferrous inverse spinel undergoes the following sequence of structural transitions : cubic (Fd3m) to tetragonal (I41/amd)to orthorhombic(Cmcm) to orthorhombic(Pmma),a
Externí odkaz:
http://arxiv.org/abs/1809.09056
Autor:
Greenberg, E., Leonov, I., Layek, S., Konopkova, Z., Pasternak, M. P., Dubrovinsky, L., Jeanloz, R., Abrikosov, I. A., Rozenberg, G. Kh.
Publikováno v:
Phys. Rev. X 8, 031059 (2018)
We provide experimental and theoretical evidence for a novel type of pressure-induced insulator-metal transition characterized by site-selective delocalization of the electrons. M\"ossbauer spectroscopy, X-ray diffraction and electrical transport mea
Externí odkaz:
http://arxiv.org/abs/1706.02787
Autor:
Greenberg, E., Hen, B., Layek, Samar, Pozin, I., Friedman, R., Shelukhin, V., Rosenberg, Y., Karpovski, M., Pasternak, M. P., Sterer, E., Dagan, Y., Rozenberg, G. Kh., Palevski, A.
Publikováno v:
Phys. Rev. B 95, 064514 (2017)
Here we report the discovery of superconductivity in multiple phases of the compressed GeSb2Te4 (GST) phase change memory alloy, which has attracted considerable attention for the last decade due to its unusual physical properties with many potential
Externí odkaz:
http://arxiv.org/abs/1605.01757