H2020Индивидуална стипендия2021–2023

MptDM · Magnon propagation in two dimensional magnets

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-06-01 → 2023-08-20
Финансиране от ЕС: 224 934 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Двуизмерните материали, като графена, се анализират за техните електронни свойства и поведение при магнитни полета. Тези открития помагат за разработването на по-ефективни магнитни сензори и нови технологии, които да заменят силициевите електронни компоненти.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Magnon propagation in two dimensional magnets

The most famous van-der Waal (vdW) material is monolayer graphene (Nobel Prize in Physics, 2004) which is often associated with extraordinary electronic properties, such as extremely high mobility and magnetoresistance. Such extraordinary electronic properties propel these materials as one of the most promising for beyond Si electronic technologies. From the scientific perspective, even after a decade of exploration, there are many things unknown in vDW materials- for eg, the mechanism of scattering at the charge neutrality point. During this project, two major research directions were carried out - (i) investigation of quantum linear magnetoresistance in vdW systems (ii) investigation of high-temperature quantum oscillations in vdW heterostructures. The first direction led to submission in Nature journal with the fellow as the co-lead author, which has been recently accepted for publication (Feb 2023). The second direction is currently being prepared for submission to a high impact journal (IF >20). The fellow is planning to disseminate these research outputs through invited talks in Singapore and India in 2023. The outcome of giant magnetoresistance (>100% at 0.1T) at room temperature using vdW materials from the first project direction may have a broad societal impact in the near future for integration of vdW materials in magnetic sensors. From a pure fundamental science impact, our work will inspire the search of Planckian scattering in other material systems particularly semi-metals that show linear magnetoresistance.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Two-dimensional (2D) materials, are crystalline planar structures with weak out-of-plane van der Waals (vdW) forces. Such 2D materials are often associated with extraordinary electronic, optical, and thermoelectric properties, such as extremely high mobilities. Ever since the isolation of graphene, the first 2D material, by Novoselov and Geim in 2004, the family of 2D materials have expanded by hundreds. However, long-range ferromagnetic order is typically not sustainable in 2D due to enhanced fluctuations. Consequently, 2D vdW magnets was only realized as late as 2017. Hence, it was only recently feasible to conduct elusive experiments for exploration of ground states, fundamental excitations and propagation of spin waves. Magnons, which are a quanta of spin waves, are particularly interesting to investigate in these 2D vdW magnets. In 2D, they exhibit step-like function of density-of-states as opposed to a gradually increasing function in three dimensional magnets. Meanwhile, other remarkable discoveries in these 2D vdW magnets such as a giant tunneling magnetoresistance has also been reported to be in close relation with magnon physics. The proposal aims to pursue seminal work in magnon excitation and propagation in 2D vdW magnets and leverage the outcomes to preposition next-generation of electron devices. So far, no report exists in quantifying magnon propagation length in a true 2D material (one or a few monolayers). On the technological front, using magnons instead of electrons to carry information in electronic devices would provide a significant low-power alternative to the existing technologies. The other highlight of this proposed device is the use of electrical signal for both injection and detection, allowing easier integration with electronics components. Driven by these exciting scientific and technological objectives, the project aims to overcome multidisciplinary challenges in physics, instrumentation, material science and device design .

Оригинален текст от CORDIS (на английски).

Участници

THE UNIVERSITY OF MANCHESTER · ManchesterКоординаторОбединеното кралство