Tuning Altermagnetic Phases in Ca3Ru2O7 Under Strain

Date

Jan 20, 2025

Time

2:50 PM - 4:20 PM

Speaker

Andrea León

Affiliation

University of Chile, Santiago

Series

TUD Physik-IFMP Institutsseminar

Language

en

Main Topic

Physik

Other Topics

Physik

Host

D. Peets

Description

Abstract

Ca3Ru2O7 is an antiferromagnetic (AFM) polar metal considered a fascinating material due to its wide range of remarkable electronic phenomena, including colossal magnetoresistance, spin waves, and multiple phase transitions. Exploring these properties under external manipulation, such as electrical current, pressure, or strain, opens new pathways for understanding its electronic behavior and controlling its quantum states. In this talk, we address the theoretical challenges of describing the electronic properties of Ca3Ru2O7 [1,2], and we explore the feasibility of manipulating its magnetic states through lattice deformation using ab-initio methods. Our study identifies potential altermagnetic (AM) states, a recently discovered elemental magnetic phase, and demonstrates that these states can be stabilized under strain. Furthermore, we discuss the underlying mechanisms behind the stability of the AM phase and propose a novel approach for tuning quantum states via AFM-to-AM transitions [3] in Ca3Ru2O7 through lattice deformation.

[1] León, A. M., González, J. W., & Rosner, H., Phys. Rev. Mater. 8, 024411 (2024).
[2] I. Markovic, et al., Proc. Natl. Acad. Sci. USA 117, 15524–15529 (2020).
[3] González, J. W., León, A. M., González-Fuentes, C., & Gallardo, R. A., arXiv:2408.08999.

Zoom: 688 4227 2214 (https://tu-dresden.zoom-x.de/j/68842272214?pwd=2nPGt3aESuZVlyhMAyv96TZRxkU9F9.1), Passcode: IFMP2024-5

Links

• Webseite
• Termindetails auf den Webseiten der TU Dresden (https://tu-dresden.de)

Last modified: Jan 20, 2025, 7:38:12 AM