Interplay between metastable magnetic domains and superconducting vortices in a ferromagnet-superconductor hybrid

JINYOUNG YUN; N. HABERKORN; YOONSEOK HAN; RYAN BAUMBACH; ERIC BAUER; F. RONNING; R. MOVSHOVICH; TUSON PARK; JAE-HYUK CHOI; JEEHOON KIM

APPLIED PHYSICS LETTERS

AMER INST PHYSICS

Lugar: New York; Año: 2024 vol. 124 p. 52601 - 526014

0003-6951

The interplay between superconductivity and magnetism has been a subject of significant interest for decades. While extensive research has focused on modifying the superconducting state through a magnetic domain as an independent variable, the manipulation of magnetic domains by the superconducting state has been relatively unexplored, primarily due to their higher stiffness compared to the energy associated with superconducting vortices. In this Letter, we demonstrate the manipulation of magnetic domains by thermally activated superconducting vortices in a ferromagnet/superconductor hybrid. We observe a reversible domain transition between metastable magnetic stripes and bubbles in a Nb/CeRu2Ga2B hybrid induced by vortex motion and the trapped field within the Nb superconducting film. The comparable Curie and superconducting critical temperatures and the presence of magnetic metastable states enable the magnetic domain changes driven by superconducting vortices in this hybrid system.