Repositorio UFRO · Omeka S

Time-dependent strain-tuned topological magnon phase transition

Primer Autor	Vidal-Silva, Nicolas
Co-autores	Troncoso, Roberto E.
Título	Time-dependent strain-tuned topological magnon phase transition
Editorial	AMER PHYSICAL SOC
Revista	PHYSICAL REVIEW B
Lenguaje	en
Resumen	Collinear magnets in honeycomb lattices under the action of time-dependent strains are investigated. Given the limits of high-frequency periodically varying deformations, we derive an effective Floquet theory for spin systems that results in the emergence of a spin chirality. We find that the coupling between magnons and spin chirality depends on the details of the strain such as the spatial dependence and applied direction. Magnonic fluctuations about the ferromagnetic state are determined, and it is found that spatially homogeneous strains drive the magnon system into topologically protected phases. In particular, we show that certain uniform strain fields play the role of an out-of-plane nearest-neighbor Dzyaloshinskii-Moriya interaction. Furthermore, we explore the application of nonuniform strains, which lead to a confinement of magnon states that for uniaxial strains propagates along the direction that preserves translational symmetry. Our work demonstrates a direct way in which to manipulate the magnon spectrum based on time-dependent strain engineering that is relevant for exploring topological transitions in quantum magnonics.
Fecha Publicación	2022
Tipo de Recurso	artículo original
doi	10.1103/PhysRevB.106.224401
Formato Recurso	PDF
Palabras Claves	strain engineering magnons magnetoelastic effects floquet system topological materials
Ubicación del archivo	http://dx.doi.org/10.1103/PhysRevB.106.224401
Categoría OCDE	Ciencia de Materiales Física Física de la Materia Condensada Física de Partículas y Campos
Materias	ingeniería de deformaciones magnones efectos magnetoelásticos sistema de floquetes materiales topológicos
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
Derechos de acceso	metadata
Access Rights	metadata
Id de Web of Science	WOS:000893212400003
ISSN	2469-9950
Tipo de ruta	verde
Categoría WOS	Ciencia de Materiales Física