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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-8936
DTSTART:20250206T160000Z
DTEND:20250207T000000Z
DTSTAMP:20260413T170648Z
LAST-MODIFIED:20250128T173924Z
LOCATION:5310 Chamberlin
SUMMARY:Probing and controlling 2D magnets through the lens of quantum
  sensors\, R. G. Herb Condensed Matter Seminar\, Brian Zhou\, Boston C
 ollege
DESCRIPTION:Recently\, the single electron spin of a defect in diamond
  known as the nitrogen-vacancy (NV) center has emerged as a versatile 
 nanoscale magnetometer capable of operation in extreme environments an
 d at diverse interfaces. In this seminar\, I will highlight my groupâ€
 ™s efforts to leverage NV quantum sensing for the high resolution imag
 ing and detection of dynamical magnetization responses in 2D layered m
 agnetic materials\, which are difficult to probe by alternative techni
 ques. We introduce novel quantum-enabled protocols to measure the ac m
 agnetic susceptibility and optically-induced magnetization dynamics in
  atomically thin magnets. Moreover\, we demonstrate the switching and 
 detection of antiphase even-layer states in a 2D A-type antiferromagne
 t. This control over antiferromagnetic domains enables multilevel exch
 ange bias on connected ferromagnetic-like regions through lateral exch
 ange coupling. NV quantum sensors thus open a unique lens for understa
 nding and controlling 2D magnetism for spintronic technologies.
URL:https://www.physics.wisc.edu/events/?id=8936
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