Zobrazeno 1 - 10
of 241
pro vyhledávání: '"Bobroff, J."'
Using smartphones in experimental physics teachings offers many advantages in term of engagement, pedagogy and flexibility. But it presents the drawbacks of possibly endangering the device and also facing the heterogeneity of available sensors on dif
Externí odkaz:
http://arxiv.org/abs/2107.10531
Autor:
Hilberer, A., Laurent, G., Lorin, A., Partier, A., Bobroff, J., Bouquet, F., Even, C., Fischbach, J. M., Marrache-Kikuchi, C. A., Monteverde, M., Pilette, B., Quay, Q.
The current performances of single-board microcontrollers render them attractive not only for basic applications but also for more elaborate projects, amongst which physics teaching or research. In this article, we show how temperature-dependent tran
Externí odkaz:
http://arxiv.org/abs/1809.08075
Publikováno v:
Physics Education, Volume 54, Number 2, March 2019
We describe four classical undergraduate physics experiments that were done with everyday objects and low-cost sensors: mechanical oscillations, transmittance of light through a slab of matter, beam deformation under load, and thermal relaxation due
Externí odkaz:
http://arxiv.org/abs/1807.03203
We describe a project-based physics lab, which we proposed to third-year university students. Theses labs are based on new open-source low-cost equipment (Arduino microcontrollers and compatible sensors). Students are given complete autonomy: they de
Externí odkaz:
http://arxiv.org/abs/1601.06659
Publikováno v:
Phys. Rev. B 89 035114 (2014)
We probe the real space electronic response to a local magnetic impurity in isovalent and heterovalent doped BaFe2As2 (122) using Nuclear Magnetic Resonance (NMR). The local moments carried by Mn impurities doped into Ba(Fe1-xCox)2As2(Co-122) and BaF
Externí odkaz:
http://arxiv.org/abs/1310.4969
Autor:
Inosov, D. S., Friemel, G., Park, J. T., Walters, A. C., Texier, Y., Laplace, Y., Bobroff, J., Hinkov, V., Sun, D. L., Liu, Y., Khasanov, R., Sedlak, K., Bourges, Ph., Sidis, Y., Ivanov, A., Lin, C. T., Keller, T., Keimer, B.
Publikováno v:
Phys. Rev. B 87, 224425 (2013)
We investigate magnetic ordering in metallic Ba[Fe(1-x)Mn(x)](2)As(2) and discuss the unusual magnetic phase, which was recently discovered for Mn concentrations x > 10%. We argue that it can be understood as a Griffiths-type phase that forms above t
Externí odkaz:
http://arxiv.org/abs/1305.4164
Autor:
Brouet, V., Lin, Ping-Hui, Texier, Y., Bobroff, J., Taleb-Ibrahimi, A., Fevre, P. Le, Bertran, F., Casula, M., Werner, P., Biermann, S., Rullier-Albenque, F., Forget, A., Colson, D.
Using angle-resolved photoemission spectroscopy, we study the evolution of the number of carriers in Ba(Fe(1-x)Cox)2As2 as a function of Co content and temperature. We show that there is a k-dependent energy shift compared to density functional calcu
Externí odkaz:
http://arxiv.org/abs/1301.6891
Autor:
Texier, Y., Laplace, Y., Mendels, P., Park, J. T., Friemel, G., Sun, D. L., Inosov, D. S., Lin, C. T., Bobroff, J.
Publikováno v:
Europhys. Lett. 99 17002 (2012)
75As nuclear magnetic resonance (NMR) experiments were performed on Ba(Fe1-xMnx)2As2 (xMn = 2.5%, 5% and 12%) single crystals. The Fe layer magnetic susceptibility far from Mn atoms is probed by the75As NMR line shift and is found similar to that of
Externí odkaz:
http://arxiv.org/abs/1206.2741
Publikováno v:
Phys. Rev. Lett. 108, 237002 (2012)
77Se and 87Rb nuclear magnetic resonance (NMR) experiments on Rb0.74Fe1.6Se2 reveal clearly distinct spectra originating from a majority antiferromagnetic (AF) and a minority metallic-superconducting (SC) phase. The very narrow NMR line of the SC pha
Externí odkaz:
http://arxiv.org/abs/1203.1834
Publikováno v:
Phys. Rev. B 81, 054438 (2010)
We present a 31P NMR study of the coupled spin 1/2 ladder compound BiCu2PO6. In the pure material, intrinsic susceptibility and dynamics show a spin gap of about . Substitution of non magnetic Zn or magnetic Ni impurity at Cu site induces a staggered
Externí odkaz:
http://arxiv.org/abs/0912.4353