title: Spin-torque resonant expulsion of the vortex core for an efficient radiofrequency detection scheme.
abstract: It has been proposed that high-frequency detectors based on the so-called spin-torque diode effect in spin transfer oscillators could eventually replace conventional Schottky diodes due to their nanoscale size, frequency tunability and large output sensitivity. Although a promising candidate for information and communications technology applications, the output voltage generated from this effect has still to be improved and, more pertinently, reduces drastically with decreasing radiofrequency (RF) current. Here we present a scheme for a new type of spintronics-based high-frequency detector based on the expulsion of the vortex core in a magnetic tunnel junction (MTJ). The resonant expulsion of the core leads to a large and sharp change in resistance associated with the difference in magnetoresistance between the vortex ground state and the final C-state configuration. Interestingly, this reversible effect is independent of the incoming RF current amplitude, offering a fast real-time RF threshold detector.
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud, 91767 Palaiseau, France.
authors.forename: A S
authors.initials: AS
authors.lastname: Jenkins
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud, 91767 Palaiseau, France.
authors.forename: R
authors.initials: R
authors.lastname: Lebrun
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud, 91767 Palaiseau, France.
authors.forename: E
authors.initials: E
authors.lastname: Grimaldi
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud, 91767 Palaiseau, France.|Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, 305-8560 Japan.
authors.forename: S
authors.initials: S
authors.lastname: Tsunegi
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud, 91767 Palaiseau, France.
authors.forename: P
authors.initials: P
authors.lastname: Bortolotti
authors.affiliation: Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, 305-8560 Japan.
authors.forename: H
authors.identifier: http://orcid.org/0000-0002-2362-3505
authors.initials: H
authors.lastname: Kubota
authors.affiliation: Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, 305-8560 Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yakushiji
authors.affiliation: Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, 305-8560 Japan.
authors.forename: A
authors.initials: A
authors.lastname: Fukushima
authors.affiliation: Service de Physique de l'Etat Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: G
authors.initials: G
authors.lastname: de Loubens
authors.affiliation: Service de Physique de l'Etat Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: O
authors.initials: O
authors.lastname: Klein
authors.affiliation: Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, 305-8560 Japan.
authors.forename: S
authors.initials: S
authors.lastname: Yuasa
authors.affiliation: Unité Mixte de Physique CNRS/Thales and Université Paris Sud, 91767 Palaiseau, France.
authors.forename: V
authors.initials: V
authors.lastname: Cros