Zobrazeno 1 - 10
of 618
pro vyhledávání: '"Devolder, T."'
The dispersion relation of spin waves can vary monotonically about the center of the Brillouin zone, allowing zero-momentum wavepackets to flow unidirectionally, which is of interest for applications. Techniques such as propagating spin wave spectros
Externí odkaz:
http://arxiv.org/abs/2405.09107
Symmetry of the coupling between surface acoustic waves and spin waves in synthetic antiferromagnets
Autor:
Seeger, R. Lopes, La Spina, L., Laude, V., Millo, F., Bartasyte, A., Margueron, S., Solignac, A., de Loubens, G., Thevenard, L., Gourdon, C., Chappert, C., Devolder, T.
Synthetic antiferromagnets host spin waves that are highly tunable. It is of practical interest to analyze the symmetry of their coupling to surface acoustic waves with the design of hybrid devices in view. For this we calculate the layer-resolved su
Externí odkaz:
http://arxiv.org/abs/2401.02263
We study the frequency non-reciprocity of the spin waves in symmetric CoFeB/Ru/CoFeB synthetic antiferromagnets stacks set in the scissors state by in-plane applied fields. Using a combination of Brillouin Light Scattering and propagating spin wave s
Externí odkaz:
http://arxiv.org/abs/2306.05259
Controlling the uniaxial magnetic anisotropy is of practical interest to a wide variety of applications. We study Co$_{40}$Fe$_{40}$B$_{20}$ single films grown on various crystalline orientations of LiNbO$_3$ substrates and on oxidized silicon. We id
Externí odkaz:
http://arxiv.org/abs/2303.11718
The interlayer exchange coupling confers specific properties to Synthetic Antiferromagnets that make them suitable for several applications of spintronics. The efficient use of this magnetic configuration requires an in-depth understanding of the mag
Externí odkaz:
http://arxiv.org/abs/2211.02497
Autor:
Devolder, T., Ngom, S. -M., Mouhoub, A., Létang, J., Kim, J. -V., Crozat, P., Adam, J. -P., Solignac, A., Chappert, C.
We study how a population of spin waves can be characterized from the analysis of the electrical microwave noise delivered by an inductive antenna placed in its vicinity. The measurements are conducted on a synthetic antiferromagnetic thin stripe cov
Externí odkaz:
http://arxiv.org/abs/2204.01427
Publikováno v:
Phys. Rev. B 103, 214431 (2021)
We develop a generic all-inductive procedure to measure the band structure of spin waves in a magnetic thin stripe. In contrast to existing techniques, our method works even if several spin wave branches coexist in the investigated frequency interval
Externí odkaz:
http://arxiv.org/abs/2104.04262
Publikováno v:
Nat. Comm. 12, 656 (2021)
Measurements of the transverse Hall resistance are widely used to investigate electron transport, magnetization phenomena, and topological quantum states. Owing to the difficulty of probing transient changes of the transverse resistance, the vast maj
Externí odkaz:
http://arxiv.org/abs/2102.00716
Publikováno v:
Phys. Rev. B 103, 235418 (2021)
The nitrogen-vacancy (NV) defect in diamond is an efficient quantum sensor of randomly fluctuating signals via relaxometry measurements. In particular, the longitudinal spin relaxation of the NV defect accelerates in the presence of magnetic noise wi
Externí odkaz:
http://arxiv.org/abs/2101.00860
Autor:
Devolder, T., Bultynck, O., Bouquin, P., Nguyen, V. D., Rao, S., Wan, D., Sorée, B., Radu, I. P., Kar, G. S., Couet, S.
We analyse the phenomenon of back-hopping in spin-torque induced switching of the magnetization in perpendicularly magnetized tunnel junctions. The analysis is based on single-shot time-resolved conductance measurements of the pulse-induced back-hopp
Externí odkaz:
http://arxiv.org/abs/2006.05108