Tuning Altermagnetic Phases in Ca3Ru2O7 Under Strain

Datum

20.01.2025

Zeit

14:50 - 16:20

Sprecher

Andrea León

Zugehörigkeit

University of Chile, Santiago

Serie

TUD Physik-IFMP Institutsseminar

Sprache

en

Hauptthema

Physik

Andere Themen

Physik

Host

D. Peets

Beschreibung

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)

Letztmalig verändert: 20.01.2025, 07:38:12