Zobrazeno 1 - 10
of 580
pro vyhledávání: '"Hamlin, J A"'
WBe2, which occurs in space group 194, with hexagonal symmetry P63/mmc, is prepared by arc-melting at temperatures above 2200 C, where Be vapor loss is significant. This study is motivated by recent work on MoB2 and WB2, both superconductors (Tc=32 a
Externí odkaz:
http://arxiv.org/abs/2411.17504
Autor:
Fabbris, G., Poldi, E. H. T., Sinha, S., Lim, J., Elmslie, T., Kim, J. H., Said, A., Upton, M., Abramchuk, M., Bahrami, F., Kenney-Benson, C., Park, C., Shen, G., Vohra, Y. K., Hemley, R. J., Hamlin, J. J., Tafti, F., Haskel, D.
Cu$_2$IrO$_3$ has attracted recent interest due to its proximity to the Kitaev quantum spin liquid state and the complex structural response observed at high pressures. We use x-ray spectroscopy and scattering as well as electrical transport techniqu
Externí odkaz:
http://arxiv.org/abs/2410.02934
Autor:
Sinha, S., Lim, J., Li, Z., Kim, J. S., Hire, A. C., Dee, P. M., Kumar, R. S., Popov, D., Hemley, R. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R., Hamlin, J. J.
The recent surprising discovery of superconductivity with critical temperature $T_c$ = 32 K in MoB$_2$ above 70 GPa has led to the search for related materials that may superconduct at similarly high $T_c$ values and lower pressures. We have studied
Externí odkaz:
http://arxiv.org/abs/2408.17416
Autor:
White, B. D., Huang, K., Fipps, I. L., Hamlin, J. J., Jang, S., Smith, G. J., Xia, B., Simonson, J. W., Nelson, C. S., Aronson, M. C., Maple, M. B.
We report measurements of magnetization, specific heat, and thermal expansion performed on As-deficient MnAs single crystals (MnAs$_{0.968}$). Ferromagnetic order is observed near $T_C \simeq$ 306 K on warming and $T_C \simeq$ 302 K on cooling, which
Externí odkaz:
http://arxiv.org/abs/2408.07781
Autor:
Lim, J., Sinha, S., Jackson, D. E., Kumar, R. S., Park, C., Hemley, R. J., VanGennep, D., Vohra, Y. K., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R., Hamlin, J. J.
The superconducting and structural properties of elemental strontium metal were investigated under pressures up to 60 GPa while maintaining cryogenic conditions during pressure application. Applying pressure at low temperatures reveals differences in
Externí odkaz:
http://arxiv.org/abs/2408.06128
Autor:
Dee, P. M., Kim, J. S., Hire, A. C., Lim, J., Fanfarillo, L., Sinha, S., Hamlin, J. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R.
Publikováno v:
Phys. Rev. B 109, 104520, March 22, 2024
Recent investigations into MoB$_{2}$ have unveiled a direct connection between a pressure-induced structural transition to a P6/mmm space group structure and the emergence of superconductivity, producing critical temperatures up to 32 K at 100 GPa. T
Externí odkaz:
http://arxiv.org/abs/2310.03818
Autor:
Lim, J., Sinha, S., Hire, A. C., Kim, J. S., Dee, P. M., Kumar, R. S., Popov, D., Hemley, R. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R., Hamlin, J. J.
Publikováno v:
Phys. Rev. B 108, 094501 (2023)
A recent work has demonstrated that MoB$_2$, transforming to the same structure as MgB$_2$ ($P6/mmm$), superconducts at temperatures above 30 K near 100 GPa [C. Pei $et$ $al$. Natl. Sci. Rev., nwad034 (2023)], and Nb-substitution in MoB$_2$ stabilize
Externí odkaz:
http://arxiv.org/abs/2302.13936
Autor:
Hire, A. C., Sinha, S., Lim, J., Kim, J. S., Dee, P. M., Fanfarillo, L., Hamlin, J. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R.
Publikováno v:
Phys. Rev. B 106, 174515, 2022
Recently it was discovered that, under elevated pressures, MoB$_2$ exhibits superconductivity at a critical temperature, $T_c$, as high as 32 K. The superconductivity appears to develop following a pressure-induced structural transition from the ambi
Externí odkaz:
http://arxiv.org/abs/2212.14869
Autor:
Elmslie, T. A., VanGennep, D., Baten, R. N., Downing, J., Bi, W., Weir, S. T., Vohra, Y. K., Baumbach, R. E., Hamlin, J. J.
We report a series of high-pressure electrical transport, magnetic susceptibility, and x-ray diffraction measurements on single crystals of the weak topological insulator Bi2TeI and the topological metal Bi3TeI. Room temperature x-ray diffraction mea
Externí odkaz:
http://arxiv.org/abs/2209.02688
Autor:
Lim, J., Hire, A. C., Quan, Y., Kim, J. S., Xie, S. R., Sinha, S., Kumar, R. S., Popov, D., Park, C., Hemley, R. J., Hamlin, J. J., Hennig, R. G., Hirschfeld, P. J., Stewart, G. R.
High-pressure electrical resistivity measurements reveal that the mechanical deformation of ultra-hard WB2 during compression induces superconductivity above 50 GPa with a maximum superconducting critical temperature, Tc of 17 K at 90 GPa. Upon furth
Externí odkaz:
http://arxiv.org/abs/2109.11521