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Condensed-Matter Seminar: "complex magnetic textures in topological materials" | The Racah Institute of Physics

Condensed-Matter Seminar: "complex magnetic textures in topological materials"

Date: 
Thu, 31/12/202012:00-13:30

Lecturer: Dr. Ella Lachman

Abstract: Quantum materials are rapidly emerging as the basis for possible novel computation devices. However, fully understanding the magnetism and the interplay between magnetic and electronic excitations in these materials are preventing us from realizing their full potential.

In my talk I will show how realizing the microscopic magnetic textures in quantum materials is crucial to the understanding of transport phenomena on the macro scale. I will focus on the ferromagnetic Weyl semimetal Co3Sn2S2 and show how with a combination of transport, magnetization, and magnetic imaging we reveal the nature of the magnetic phase in the material. Through the exchange bias of the anomalous Hall effect, we discovered evidence to a spin glass phase coexisting with ferromagnetism. This glass behavior is likely caused by the geometric frustration intrinsic to the Kagome network of magnetic ions dictated by the crystal structure.