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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-9532
DTSTART:20261120T213000Z
DTEND:20261120T223000Z
DTSTAMP:20261008T113747Z
LAST-MODIFIED:20260908T231116Z
LOCATION:Chamberlin 2241 - https://uwmadison.zoom.us/j/96927300636?pwd
 =2Gjt5BXqG7T3FfvBQ8C5okcNldSzzn.1
SUMMARY:Emergent Quantum Phenomena in Graphene\, Physics Department Co
 lloquium\, Long Ju\, MIT
DESCRIPTION:Condensed matter physics aims to explore and understand va
 rious quantum phenomena that emerge from the interactions between nucl
 ei and electrons. Through synthesizing and investigating various cryst
 als\, this constructionism approach has led to the discovery of many a
 mazing phenomena\, especially when the principles of electron correlat
 ion and topology play important roles. The settings of such convention
 al crystals are often very complicated\, making it hard to extract the
  essential ingredients and understand the underlying physics. In this 
 talk\, I will show our efforts on establishing a new paradigm\, based 
 on a material known as rhombohedral graphene\, which is part of natura
 l graphite. Rhombohedral graphene has the simplest chemistry and struc
 ture\, yet can be controlled by a set of experimental knobs to exhibit
  many intriguing phenomena in condensed matter physics. Beyond phenome
 na that were familiar\, I will focus on two newly observed quantum pha
 ses of matter\, chiral superconductor[1] and fractional quantum anomal
 ous Hall effect[2]. I will show their construction\, phenomena\, and i
 mplications for quantum many-body physics and applications. In the end
 \, I will discuss new opportunities to be explored in this new paradig
 m.
\n 
\nReferences:
\n[1] Han\, T.\, Lu\, Z.\, Hadjri\, Z. et al. Sig
 natures of chiral superconductivity in rhombohedral graphene. Nature 6
 43\, 654–661 (2025). https://doi.org/10.1038/s41586-025-09169-7
\n[2
 ] Lu\, Z.\, Han\, T.\, Yao\, Y. et al. Fractional quantum anomalous Ha
 ll effect in multilayer graphene. Nature 626\, 759–764 (2024). https
 ://doi.org/10.1038/s41586-023-07010-7
\n
URL:https://www.physics.wisc.edu/events/?id=9532
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