Abstract
We study the Hall conductivity of a two-dimensional electron gas under an inhomogeneous magnetic field . First, we prove using the quantum kinetic theory that an odd magnetic field can lead to a purely nonlinear Hall response. Second, considering a real-space magnetic dipole consisting of a sign-changing magnetic field and based on numerical semiclassical dynamics, we unveil a parametric resonance involving the cyclotron ratio and a characteristic width of , which can greatly enhance the Hall response. Different from previous mechanisms that rely on the bulk Berry curvature dipole, the effect largely stems from boundary states associated with the real-space magnetic dipole. Our findings pave a way to engineer current rectification and higher harmonic generation in two-dimensional materials having or not having crystal inversion symmetry.
| Original language | English |
|---|---|
| Article number | 165303 |
| Number of pages | 9 |
| Journal | Physical Review B |
| Volume | 104 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2021 |
| Publication type | A1 Journal article-refereed |
Funding
We are thankful to Cosma Fulga, Jhih-Shih You, Sheng-Chin Ho, Tse-Ming Chen, Carmine Ortix, and Jeroen van den Brink for enlightening discussions. A.G.M. acknowledges financial support from Iran Science Elites Federation under Grant No. 11/66332. J.I.F. would like to thank the support from the Alexander von Humboldt Foundation. C.-H.C. acknowledges the financial support by the Ministry of Science and Technology (Grants No. MOST-107-2112-M-006-025-MY3, No. MOST-108-2638-M-006-002-MY2, and No. MOST 110-2112-M-006-020-) and by the Yushan Young Scholar Program under the Ministry of Education (MOE) in Taiwan. Alexander von Humboldt-Stiftung Ministry of Science and Technology, Taiwan
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Fingerprint
Dive into the research topics of 'Resonant nonlinear Hall effect in two-dimensional electron systems'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver