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DTSTAMP:20261112T150117Z
UID:1794564000@ist.ac.at
DTSTART:20261113T110000
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DESCRIPTION:Speaker: Carolin Gold\nhosted by Hryhoriy Polshyn\nAbstract: Sc
 anning probe microscopy techniques have been indispensable in unraveling t
 he rich physics of van der Waals materials. Yet mapping ground-state elect
 ronic structures over large fields of view\, in gated devices on insulatin
 g substrates or through phase-transitions remains a persistent challenge.H
 ere we demonstrate cryogenic conductive atomic force microscopy (CAFM) as 
 a platform for tunneling microscopy and spectroscopy with nanoscale resolu
 tion through two experiments.  First\, we image atomic defects in monolay
 er graphene on hexagonal boron nitride\, resolving their local electronic 
 signatures through spatially resolved tunneling spectroscopy. Second\, we 
 turn to moiré materials\, where relevant electronic textures can span few
  nanometers up to hundreds of nanometers — length scales that are readil
 y accessible by CAFM. Focusing on minimally twisted mono-bilayer graphene\
 , we image electronic resonances at structural domain walls and confinemen
 t of electronic modes within domains\, demonstrating that domain wall scat
 tering plays a role beyond a perturbative correction. Together\, these res
 ults establish low-temperature CAFM as a powerful and versatile addition t
 o the scanning probe toolkit for van der Waals quantum materials.
LOCATION:Mondi 2a+b\, Central Building\, ISTA
ORGANIZER:
SUMMARY:Carolin Gold: A new twist on conductive atomic force microscopy: cr
 yogenic tunneling microscopy of van der Waals materials
URL:https://talks-calendar.ista.ac.at/events/6764
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