Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Bossoni, L."'
Autor:
Wagenaar, J. J. T., Haan, A. M. J. den, Donkersloot, R. J., Marsman, F., de Wit, M., Bossoni, L., Oosterkamp, T. H.
Publikováno v:
Phys. Rev. Applied 7, 024019 (2017)
We present an innovative method for magnetic resonance force microscopy (MRFM) with ultra-low dissipation, by using the higher modes of the mechanical detector as radio frequency (rf) source. This method allows MRFM on samples without the need to be
Externí odkaz:
http://arxiv.org/abs/1609.05685
Autor:
Wagenaar, J. J. T., Haan, A. M. J. den, de Voogd, J. M., Bossoni, L., de Jong, T. A., de Wit, M., Bastiaans, K. M., Thoen, D. J., Endo, A., Klapwijk, T. M., Zaanen, J., Oosterkamp, T. H.
Nuclear spin-lattice relaxation times are measured on copper using magnetic resonance force microscopy performed at temperatures down to 42 mK. The low temperature is verified by comparison with the Korringa relation. Measuring spin-lattice relaxatio
Externí odkaz:
http://arxiv.org/abs/1603.04238
Autor:
Bossoni, L., Moroni, M., Julien, M. H., Mayaffre, H., Canfield, P. C., Reyes, A., Halperin, W. P., Carretta, P.
Publikováno v:
Phys. Rev. B 93, 224517 (2016)
We present nuclear magnetic resonance evidence that very slow ($\leq 1$ MHz) spin fluctuations persist into the overdoped regime of Ba(Fe$_{1-x}$Rh$_{x}$)$_2$As$_2$ superconductors. Measurements of the $^{75}$As spin echo decay rate, obtained both wi
Externí odkaz:
http://arxiv.org/abs/1602.01710
Autor:
Overweg, H. C., Haan, A. M. J. den, Eerkens, H. J., Alkemade, P. F. A., La Rooij, A. L., Spreeuw, R. J. C., Bossoni, L., Oosterkamp, T. H.
Publikováno v:
Appl. Phys. Lett. 107, 072402 (2015)
We investigate the degradation of the magnetic moment of a 300 nm thick FePt film induced by Focused Ion Beam (FIB) milling. A $1~\mu \mathrm{m} \times 8~\mu \mathrm{m}$ rod is milled out of a film by a FIB process and is attached to a cantilever by
Externí odkaz:
http://arxiv.org/abs/1504.07104
Autor:
Hammerath, F., Moroni, M., Bossoni, L., Sanna, S., Kappenberger, R., Wurmehl, S., Wolter, A. U. B., Afrassa, M. A., Kobayashi, Y., Sato, M., Büchner, B., Carretta, P.
Publikováno v:
Phys.Rev.B 92, 020505(R) (2015)
$^{19}$F NMR measurements in optimally electron-doped La$_{1-y}$Y$_{y}$Fe$_{1-x}$Mn$_{x}$AsO$_{0.89}$F$_{0.11}$ superconductors are presented. In these materials the effect of Mn doping on the superconducting phase is studied for two series of compou
Externí odkaz:
http://arxiv.org/abs/1504.04352
Publikováno v:
Appl. Phys. Lett. 104, 182601 (2014)
Using dynamic cantilever magnetometry, we study the vortex lattice and its corresponding melting transition in a micrometer-size crystallite of superconducting NbSe2. Measurements of the cantilever resonance frequency as a function of magnetic field
Externí odkaz:
http://arxiv.org/abs/1404.0938
Publikováno v:
J. Phys.: Condens. Matter 26 (2014) 405703
We measured the static uniform spin susceptibility of Ba(Fe$_{1-x}$Rh$_x$)$_2$As$_2$ iron-based superconductors, over a broad range of doping ($0.041\leq x\leq 0.094$) and magnetic fields. At small fields ($H \le$ 1 kOe) we observed, above the transi
Externí odkaz:
http://arxiv.org/abs/1311.1336
Publikováno v:
Phys. Rev. B 88, 100503(R) (2013)
This work presents 75As NMR spin echo decay rate (1/T2) measurements in Ba(Fe1-xRhx)2As2 superconductors, for 0.041 < x < 0.094. It is shown that 1/T2 increases upon cooling, in the normal phase, suggesting the onset of an unconventional very low-fre
Externí odkaz:
http://arxiv.org/abs/1309.1936
Publikováno v:
Eur. Phys. Lett. 102, 17005 (2013)
By using Nuclear Magnetic Resonance and ac-susceptibility, the characteristic correlation times for the vortex dynamics, in an iron-based superconductor, have been derived. Upon cooling, the vortex dynamics displays a crossover consistent with a vort
Externí odkaz:
http://arxiv.org/abs/1208.5142
Publikováno v:
Phys. Rev. B 85, 104525 (2012)
75As NMR spin-lattice relaxation (1/T1) and spin-echo decay (1/T2) rate measurements were performed in a single crystal of Ba(Fe0.93Rh0.07)2As2 superconductor. Below the superconducting transition temperature Tc, when the magnetic field H is applied
Externí odkaz:
http://arxiv.org/abs/1201.0103