Journal
PHYSICAL REVIEW RESEARCH
Volume 2, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.023404
Keywords
-
Categories
Funding
- Netherlands Organisation for Scientific Research (NWO/OCW), Frontiers of Nanoscience (NanoFront)
- VIDI program
- Research Foundation Flanders (FWO, Belgium)
- European Research Council under the European Union's Horizon 2020 programme/ERC Grant (Quantox of QuantERA ERA-NET Cofund in Quantum Technologies) [677458, 770887, 731473]
- Fondazione Cariplo via the project Magister [2013-0726]
- CNR-SPIN via the Seed Project CAMEO
- CINECA award under the ISCRA initiative CAMEO Grant [IsC54]
- Narodowe Centrum Nauki (NCN, National Science Centre, Poland) [2016/23/B/ST3/00839]
- Foundation for Polish Science through the IRA Programme
- European Union
- GOA project Solarpaint of the University of Antwerp
- Hercules fund from the Flemish Government
Ask authors/readers for more resources
Three-dimensional strontium ruthenate (SrRuO3) is an itinerant ferromagnet that features Weyl points acting as sources of emergent magnetic fields, anomalous Hall conductivity, and unconventional spin dynamics. Integrating SrRuO3 in oxide heterostructures is potentially a novel route to engineer emergent electrodynamics, but its electronic band topology in the two-dimensional limit remains unknown. Here we show that ultrathin SrRuO3 exhibits spin-polarized topologically nontrivial bands at the Fermi energy. Their band anticrossings show an enhanced Berry curvature and act as competing sources of emergent magnetic fields. We control their balance by designing heterostructures with symmetric (SrTiO3/SrRuO3/SrTiO3 and SrTiO3/SrRuO3/SrIrO3) and asymmetric interfaces (SrTiO3/SrRuO3/SrIrO3). Symmetric structures exhibit an interface-tunable single-channel anomalous Hall effect, while ultrathin SrRuO3 embedded in asymmetric structures shows humplike features consistent with multiple Hall contributions. The band topology of two-dimensional SrRuO3 proposed here naturally accounts for these observations and harmonizes a large body of experimental results.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available