SP-STM study of the multi-Q phases in GdRu2Si2

Abstract

The two stable surfaces of GdRu2Si2 are studied using spin-polarized scanning tunneling microscopy (SP-STM). Depending on the applied magnetic field different magnetic phases have been found and the presented measurements are in agreement with the respective previously proposed multi-Q spin textures. In particular the multi-Q nature of the zero magnetic field state, for which previous experiments could not rule out the coexistence of single-Q states, can be confirmed by our spin-resolved measurements on the Si-terminated surface. The surfaces of GdRu2Si2 exhibit strong magnetism-induced modulations of the spin-averaged density of states. We find that while the magnetic contribution to the tunnel signal can be clearly identified for the Si-terminated surface this proves to be much more difficult for the Gd-terminated surface. However, the magnetic field dependent spatial modulations on the Gd-terminated surface demonstrate that additional magnetic phase transitions occur for the surface layer compared to those identified for bulk GdRu2Si2 and possible spin textures are presented.

7 pages, 5 figures

References in corpus (5)

• Nanometric square skyrmion lattice in a centrosymmetric tetragonal magnet
• Imaging the coupling between itinerant electrons and localised moments in the centrosymmetric skyrmion magnet GdRu2Si2
• Square skyrmion crystal in centrosymmetric itinerant magnets
• Zoology of multiple-Q spin textures in a centrosymmetric tetragonal magnet with itinerant electrons
• The Double-$Q$ Ground State with Topological Charge Stripes in the Skyrmion Candidate ${\text{GdRu}}_{\text{2}}{\text{Si}}_{\text{2}}$

Cited by in corpus (6)

• Stabilization mechanisms of magnetic skyrmion crystal and multiple-$Q$ states based on momentum-resolved spin interactions
• Anisotropic skyrmion and multi-$q$ spin dynamics in centrosymmetric Gd${}_2$PdSi${}_3$
• A Magnon Band Analysis of GdRu2Si2 in the Field-Polarized State
• Unveiling Mysteries of GdRu${}_2$Si${}_2$: 3D Magnetism in a layered like Magnet
• Image of helical local moment magnetic order in the STM spectrum
• Field-tunable quadruple-$Q$ states driven by momentum-space frustration