Ultrafast Terahertz Field Control of the Emergent Magnetic and Electronic Interactions at Oxide Interfaces
Ultrafast electric-field control of emergent electronic and magnetic states at oxide interfaces offers exciting prospects for the development of the next generation of energy-efficient devices. Here, it is demonstrated that the electronic structure and emergent ferromagnetic interfacial state in epitaxial LaNiO<sub>3</sub>/CaMnO<sub>3</sub> superlattices can be effectively controlled using intense, single-cycle THz electric-field pulses. A suite of advanced X-ray spectroscopic techniques is employed to measure a detailed magneto-optical profile and the thickness of the ferromagnetic interfacial layer. Then, a combination of time-resolved and temperature-dependent optical measurements is used to disentangle several correlated electronic and magnetic processes driven by ultrafast, high-field THz pulses. Sub-picosecond non-equilibrium Joule heating of the electronic system is observed, ultrafast demagnetization of the ferromagnetic interfacial layer, and slower dynamics indicative of a change in the magnetic state of the superlattice due to the transfer of spin-angular momentum to the lattice. These findings suggest a promising avenue for the efficient control of 2D ferromagnetic states at oxide interfaces using ultrafast electric-field pulses.
Authors
- Christoph Klewe (ORCID: https://orcid.org/0000-0002-5816-5647)
- Christoph Schlueter (ORCID: https://orcid.org/0000-0002-8745-3074)
- J. Chakhalian (ORCID: https://orcid.org/0000-0001-8168-9441)
- Jay R. Paudel (ORCID: https://orcid.org/0000-0002-3173-3018)
- A. M. Derrico (ORCID: https://orcid.org/0000-0001-8053-1810)
- Tsung‐Chi Wu (ORCID: https://orcid.org/0000-0002-7551-4650)
- A. X. Gray (ORCID: https://orcid.org/0000-0002-7634-4294)
- Afnan Alostaz (ORCID: https://orcid.org/0000-0002-5715-7055)
- M. Kareev (ORCID: https://orcid.org/0009-0001-8838-5608)
- Martina Basini (ORCID: https://orcid.org/0000-0001-8614-7991)
- Claus M. Schneider (ORCID: https://orcid.org/0000-0002-3920-6255)
- Stefano Bonetti (ORCID: https://orcid.org/0000-0001-9352-2411)
- Vivek Unikandanunni (ORCID: https://orcid.org/0000-0002-6022-1206)
- Michael Terilli (ORCID: https://orcid.org/0000-0003-0361-8642)
- Padraic Shafer (ORCID: https://orcid.org/0000-0001-9363-2557)
- A. Gloskovskii (ORCID: https://orcid.org/0000-0002-2291-5207)
Institutions
- Rutgers, The State University of New Jersey (US)
- University of Bern (CH)
- Bern University of Applied Sciences (CH)
- Lawrence Berkeley National Laboratory (US)
- Ca' Foscari University of Venice (IT)
- Stockholm University (SE)
- Forschungszentrum Jülich (DE)
- Deutsches Elektronen-Synchrotron DESY (DE)
- ETH Zurich (CH)
- Environmental and Occupational Health Sciences Institute (US)
- Temple University (US)
- University of California, Berkeley (US)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-11-24
- DOI
- https://doi.org/10.1002/adma.202512328
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00