Quantum materials are rapidly emerging as the basis for possible novel computation devices. However,
fully understanding the interplay between magnetic and electronic excitations 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 demonstrate this with two examples from two different types of materials. First, I will show how
scanning nanoSQUID-on-tip magnetic imaging of magnetically doped topological insulators reveal the
underlying fragility of the Quantum Anomalous Hall effect at elevated temperatures. Then, I will show
how with a combination of transport, magnetization, and magnetic imaging of the Weyl semimetal
Co3Sn2S2, we find that the dynamics of domain walls are responsible for the anomalous transport
behavior in the material. These observations show that better understanding of the microscopic
magnetism in these systems reveal new phenomena and deepen our understanding of the interplay
between magnetic textures and electronic properties.
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2021-02-01T12:00:002021-02-01T13:00:00Magnetic Textures in Quantum Materials: from Topology to MagnonicsEvent Information:
Quantum materials are rapidly emerging as the basis for possible novel computation devices. However,
fully understanding the interplay between magnetic and electronic excitations 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 demonstrate this with two examples from two different types of materials. First, I will show how
scanning nanoSQUID-on-tip magnetic imaging of magnetically doped topological insulators reveal the
underlying fragility of the Quantum Anomalous Hall effect at elevated temperatures. Then, I will show
how with a combination of transport, magnetization, and magnetic imaging of the Weyl semimetal
Co3Sn2S2, we find that the dynamics of domain walls are responsible for the anomalous transport
behavior in the material. These observations show that better understanding of the microscopic
magnetism in these systems reveal new phenomena and deepen our understanding of the interplay
between magnetic textures and electronic properties.Event Location:
https://ubc.zoom.us/j/62870796359?pwd=SkNWNnB4SW5mOWpEUUxCVE1pcWorUT09 Passcode: 581018