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Akademický článek
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Autor:
P. Schwider, M. Wäny, Nicolas Blanc, Peter Seitz, M. Willemin, G. K. Lang, Stefan Lauxtermann
Publikováno v:
Optics and Lasers in Engineering. 36:185-194
The accurate measurement of the optoelectronic properties of imaging sensors is of utmost importance for their appropriate use in various modern application fields, such as in metrology, quality control, environmental monitoring, medicine or for auto
Autor:
Hugo Keller, Thomas Schneider, K. Kishio, M. Willemin, J. Hofer, Takao Sasagawa, J. Karpinski, J. M. Singer, K. Conder
Publikováno v:
Physical Review B. 62:631-639
Angular-dependent magnetic torque measurements performed near the critical temperature on single crystals of HgBa_{2}CuO_{4+y}, La_{2-x}Sr{x}CuO_{4}, and YBa_{2}Cu_{3}O_{6.93} are scaled, following the 3D XY model, in order to determine the scaling f
Publikováno v:
Physical Review Letters. 84:4192-4195
We report measurements of the oxygen-isotope effect (OIE) on the in-plane penetration depth ${\ensuremath{\lambda}}_{\mathrm{ab}}(0)$ in underdoped ${\mathrm{La}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}$ single crystals. A highly sensit
Autor:
R. A. Fisher, Ulrich Welp, G. W. Crabtree, Andreas Schilling, W. K. Kwok, Hugo Keller, C. Rossel, Norman E. Phillips, R. J. Olsson, M. Willemin
Publikováno v:
Physical Review B. 61:3592-3603
We measured the magnetic torque \ensuremath{\tau} experienced by an untwinned ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$ single crystal in external magnetic fields up to ${\ensuremath{\mu}}_{0}H=7\mathrm{T}
Publikováno v:
Physical Review B. 60:1332-1339
Angular-dependent torque magnetization measurements on a ${\mathrm{HgBa}}_{2}{\mathrm{CuO}}_{4+y}$ microcrystal performed close to the critical temperature ${T}_{c}$ are analyzed within the framework of three-dimensional (3D) $\mathrm{XY}$ critical b
Publikováno v:
Sensors and Actuators A: Physical. 73:235-242
New types of piezoresistive cantilevers for torque magnetometry have been microfabricated and tested. The design is optimized to detect the flexion and torsion of the cantilever corresponding to a torque in two directions, which is induced by a micro
Publikováno v:
Physical Review B. 59:R717-R720
The effective mass anisotropy ratio \ensuremath{\gamma} is generally determined relative to the main axes of a superconductor. Torque measurements with arbitrary field orientations, especially near the ab plane, are presented. The scaling of the appa
Autor:
G. W. Crabtree, M. Willemin, Ulrich Welp, R. J. Olsson, C. Rossel, J. Hofer, Hugo Keller, W. K. Kwok, Andreas Schilling
Publikováno v:
Physical Review Letters. 81:4236-4239
High-resolution magnetic-torque studies on an untwinned ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$ single crystal near its critical temperature ${T}_{c}$ reveal that the first-order vortex-lattice melting t