IISER MOHALI

Abstract: Understanding and predicting material behavior is inherently complex; however, underlying symmetries provide a powerful framework to guide these efforts. The recent discovery of altermagnetism—spin-split, even-parity compensated magnets— has shown that spin symmetries can uncover exchange-driven phenomena that were previously overlooked. Building on this insight, in my recent works I explore spin symmetry criteria [1, 2] to identify the odd-parity effective time-reversal symmetric magnetic states —termed anti-altermagnets— in noncollinear systems, focusing on effects driven purely by exchange interactions, independent of spin–orbit coupling. I will present these unconventional magnetic phases and their distinctive response signatures [1, 2]. Remarkably, they enable a large, purely non-relativistic out-of-plane charge-to-spin conversion [2], fundamentally different from the conventional Rashba–Edelstein effect.Then I will briefly discuss my broad research experiences, developmental experiences, and professional background, which enable the exploration and design of novel magnetic and quantum materials beyond conventional limits. Finally, I will conclude by outlining three future research directions demonstrating how symmetry- guided design of quantum materials can unlock entirely new functionalities for next- generation spintronic and quantum technologies.

1. Hellenes, Jungwirth, Ubiergo, Chakraborty, Sinova, Šmejkal, arXiv:2309.01607 (2024)
2. Chakraborty, Hellenes, Ubiergo, Jungwirth, Šmejkal, Sinova, Nature Communication 16 (1), 7270 (2025)

Meeting ID: 946 1210 9215
Passcode: 734868