Electric-Field Tunable Anisotropic g‑Factor Induced by Spin Pumping
Jian Shao, Matthias Kronseder, Jianping Guo, Maximilian Mangold, Dong Pan, Thomas N. G. Meier, Weiwei Zhao, Jianhua Zhao, Christian H. Back, Lin Chen
TL;DR
This paper shows that spin pumping can change the g-factor in a 2DEG system, and this change can be controlled with an electric field.
Contribution
The paper experimentally demonstrates electric-field tunable anisotropic g-factor modulation due to spin pumping.
Findings
Spin pumping induces an anisotropic g-factor with 2-fold symmetry in a Py/AlOx/STO system.
The g-factor anisotropy can be tuned by applying an external electric field.
The effect is observed below the onset temperature of the 2DEG.
Abstract
Spin pumping, a well-established phenomenon where the precessing magnetization of a ferromagnet (FM) injects a pure spin current into an adjacent nonmagnetic layer, is characteristically identified by the enhancement of magnetic damping in the FM. Theoretical work has also suggested that spin pumping can affect the Landé g-factoranother key parameter of ferromagnetic materials besides the magnetic damping. However, experimental evidence of this effect has remained limited. Here, we demonstrate that spin pumping can lead to significant modulation of the g-factor in a Py/AlO x /STO two-dimensional electron gas (2DEG) system with strong spin–orbit interaction. Specifically, we observe an anisotropic g-factor with 2-fold symmetry below the onset temperature of the 2DEG, and furthermore this anisotropy can be tuned when applying an external electric field. This work uncovers a previously…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsQuantum and electron transport phenomena · Electronic and Structural Properties of Oxides · Topological Materials and Phenomena