Spin-based electric devices such as giant magneto-resistive (GMR) spin valve and magnetic tunnel junction (MTJ) are also the possible candidate device for highly sensitive magnetic field detection [1][2][3][4][5]. These devices provide significant progress with the developments of spintronics and much better performance compared to other fieldsensing devices such as semiconductor Hall sensor and flux-gate sensor. In addition, magnetic storage, magnetic memory and other functional devices such as semiconductor spin transistor devices and spin quantum bits can be realized by spin-based electric devices. Moreover, recently, the microwave devices based on the dynamical spin motion in sub nano second range have also been demonstrated with highly flexible tenability. Since a few GHz operations are the physical upper limit of the devices based on the surface acoustic wave which is commonly utilized as the present microwave device, a microwave device based on the spin precession with higher operation frequency is a timely demonstration. Thus, a wide range of applications with various attractive features are expected by utilizing electron spin in the electrical and microwave devices. On the other hand, in each area, the conventional and commercial devices are still improving their device performances. Therefore, the significant developments of the spin devices such as material innovation and novel architecture proposal are essential for overcoming the competition and the wide distribution in the world. In this view point, we believe that the development of the spin device with original functions which are unable to realize in the conventional devices is a key for the breakthrough of the spin devices. To realize this, we are focusing on the spin wave in a panda-shaped nano-ring structure.Panda ring resonator proposed by us is a high performance semiconductor laser device based on the nonlinear optics ( Figure 1). These provide sensitive detection of ultra-small magnetic field comparable to SQUID (superconducting quantum interference device) while its product and running costs, size and structures are much smaller than SQUID. Moreover, by alternating the operation function, it will be possible to extend the optical trapping device such as micro tweezers and virus detector. Thus, Panda ring resonator has various attractive possibilities for human society and healthcare devices. However, unfortunately, an experimental demonstration of the panda ring resonator has not been reported so far although the embedded ring resonator has been demonstrated recently. This is because the integration technology of different-type semiconductors in submicron space is extremely difficult. Our research team has recently found that spin wave in ferromagnetic nanostructures also provides nonlinear operations similar to the semiconductor panda ring resonator because of the analogy between the photon and magnon. So, we combine high performance nonlinear optical and spintronic devices. Namely, instead of optical wave packet, we realize the panda-...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.