Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Weir, Samuel"'
Autor:
Stillwell, Ryan L., Wang, Xiangfeng, Wang, Limin, Campbell, Daniel J., Paglione, Johnpierre, Weir, Samuel T., Vohra, Yogesh K., Jeffries, Jason R.
We report the observation of the pressure-induced, fully-collapsed tetragonal phase of CaRbFe4As4 for P~ 22 GPa via high-pressure x-ray diffraction and magnetotransport measurements. The x-ray measurements, along with resistivity measurements, show t
Externí odkaz:
http://arxiv.org/abs/1902.00472
Autor:
Jackson, Daniel E., VanGennep, Derrick, Bi, Wenli, Zhang, Dongzhou, Materne, Philipp, Liu, Yi, Cao, Guang-Han, Weir, Samuel T., Vohra, Yogesh K., Hamlin, James J.
Publikováno v:
Phys. Rev. B 98, 014518 (2018)
The recently discovered (Rb,Cs)EuFe4As4 compounds exhibit an unusual combination of superconductivity (Tc = 35 K) and ferromagnetism (Tm = 15 K). We have performed a series of x-ray diffraction, ac magnetic susceptibility, dc magnetization, and elect
Externí odkaz:
http://arxiv.org/abs/1805.09288
Autor:
Stillwell, Ryan L., Jeffries, Jason R., McCall, Scott K., Lee, Jonathan R. I., Weir, Samuel T., Vohra, Yogesh K.
We have performed the first high-pressure magnetotransport and x-ray diffraction measurements on ferromagnetic LaCo5, confirming the theoretically predicted electronic topological transition driving the magneto-elastic collapse seen in the related co
Externí odkaz:
http://arxiv.org/abs/1511.03192
Using high-pressure magnetotransport techniques we have discovered superconductivity in Bi2Te, a member of the infinitely adaptive (Bi2)m(Bi2Te3)n series, whose end members, Bi and Bi2Te3, can be tuned to display topological surface states or superco
Externí odkaz:
http://arxiv.org/abs/1511.02944
Publikováno v:
The European Physical Journal B (2014) 87: 68
High pressure electrical resistance and x-ray diffraction measurements have been performed on ruthenium-doped Ba(Fe0.9Ru0.1)2As2, up to pressures of 32 GPa and down to temperatures of 10 K, using designer diamond anvils under quasi-hydrostatic condit
Externí odkaz:
http://arxiv.org/abs/1304.0298
Publikováno v:
MRS Proceedings / Volume 1519 / 2013 (http://dx.doi.org/10.1557/opl.2012.1759)
The boron-doped single crystal diamond films were grown homoepitaxially on synthetic (100) oriented Type Ib diamond substrates using a Microwave Plasma Chemical Vapor Deposition (MPCVD) technique. Raman spectrum showed a few additional bands at the l
Externí odkaz:
http://arxiv.org/abs/1210.7846
Autor:
Uhoya, Walter, Tsoi, Georgiy, Vohra, Yogesh, Wolanyk, Nathaniel, Rao, Sistla Muralidhara, Wu, Maw-Kuen, Weir, Samuel
Publikováno v:
European Physical Letters 99, 26002 (2012)
Simultaneous high pressure x-ray diffraction and electrical resistance measurements have been carried out on a PbO type {\alpha}-FeSe0.92 compound to a pressure of 44 GPa and temperatures down to 4 K using designer diamond anvils at synchrotron sourc
Externí odkaz:
http://arxiv.org/abs/1210.3645
Autor:
Zocco, Diego A., Tütün, Duygu Y., Hamlin, James J., Jeffries, Jason R., Weir, Samuel T., Vohra, Yogesh K., Maple, M. Brian
Publikováno v:
Supercond. Sci. Technol. 25, 084018 (2012)
We have synthesized two iron-pnictide/chalcogenide materials, CuFeTe2 and Fe2As, which share crystallographic features with known iron-based superconductors, and carried out high-pressure electrical resistivity measurements on these materials to pres
Externí odkaz:
http://arxiv.org/abs/1207.6272
Autor:
Uhoya, Walter, Tsoi, Georgiy M., Vohra, Yogesh K., McGuire, Michael A., Sefat, Athena S., Sales, Brian C., Mandrus, David, Weir, Samuel T.
Publikováno v:
J. Phys.: Condens. Matter 22 (2010) 185702
We have investigated structural and magnetic phase transitions under high pressures in a quaternary rare earth transition metal arsenide oxide NdCoAsO compound that is isostructural to high temperature superconductor NdFeAsO. Four-probe electrical re
Externí odkaz:
http://arxiv.org/abs/1104.3172
Autor:
Uhoya, Walter, Vohra, Georgiy M. Tsoi Yogesh K., McGuire, Michael A., Sefat, Athena S., Sales, Brian C., Mandrus, David, Weir, Samuel T.
Publikováno v:
J. Phys.: Condens. Matter 22 (2010) 292202 (5pp)
The crystal structure and electrical resistance of the structurally-layered EuFe2As2 have been studied up to 70 GPa and down to temperature of 10 K, using a synchrotron x-ray source and the designer diamond anvils. The room-temperature compression of
Externí odkaz:
http://arxiv.org/abs/1102.2571