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16 papers · 2 filters
Colossal electroresistance and colossal magnetoresistive step in paramagnetic insulating phase of single crystalline bilayered manganite(LaPr)SrMnO
Y. Yamato, M. Matsukawa, R. Suryanarayanan +5
We report a significant decrease in the low-temperature resistance induced by the application of an electric current on the -plane in the paramagnetic insulating (PMI) state of…
Bistability of vortex core dynamics in a single perpendicularly magnetized nano-disk
Grégoire De Loubens, A. Riegler, B. Pigeau +10
Microwave spectroscopy of individual vortex-state magnetic nano-disks in a perpendicular bias magnetic field, , is performed using a magnetic resonance force microscope (MRFM).…
Temperature dependent Raman and x-ray studies of spin-ice pyrochlore and non-magnetic pyrochlore
Surajit Saha, Surjeet Singh, B. Dkhil +5
We present here temperature-dependent Raman, x-ray diffraction and specific heat studies between room temperature and 12 K on single crystals of spin-ice pyrochlore compound $Dy_2T…
High domain wall velocity at zero magnetic field induced by low current densities in spin-valve nanostripes
Stefania Pizzini, Vojtech Uhlir, Jan Vogel +14
Current-induced magnetic domain wall motion at zero magnetic field is observed in the permalloy layer of a spin-valve-based nanostripe using photoemission electron microscopy. The…
Auto-oscillation threshold and line narrowing in MgO-based spin-torque oscillators
S. Cornelissen, L. Bianchini, G. Hrkac +7
We present an experimental study of the power spectrum of current-driven magnetization oscillations in MgO tunnel junctions under low bias. We find the existence of narrow spectral…
Two insulating phases in compressed Pr1-xCaxMnO3 thin films
M. Filippi, W. Prellier, P. Auban-Senzier +1
The temperature dependent resistivity of two Pr1-xCaxMnO3 (x=0.5 and 0.4) thin films grown on LaAlO3 has been studied as a function of hydrostatic pressure (up to 2.5 GPa) and magn…