Cornell University

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CANCELED: LASSP & AEP Seminar - Feng Wang - University of California - Berkeley

Tuesday, May 10, 2022 at 12:20pm

700 Clark Hall

CANCELED: LASSP & AEP Seminar - Feng Wang - University of California - Berkeley

Host: Kin Fai Mak

Quantitative understanding of moire physics in transition metal dichalcogenide heterostructures

Moire superlattices provide a powerful tool to design flat electronic bands for novel correlated quantum phases. In this talk, I will describe our effort to combine ab into calculations, optical spectroscopy, and scanning tunneling microscopy to gain fundamental understanding of the moire flat band and associated electronic, optical, and spintronic phenomena in WS2/WSe2 moire heterostructures. We reveal that three-dimensional lattice reconstruction plays a key role in determining the flat moire minibands in the WS2/WSe2 heterostructure. We show that different moire exciton resonances can exhibit very different electron-hole wavefunctions.  We further examine how spin and charge transport can be decoupled in the correlated Mott insulator in the moire heterostructure.

~ Light refreshments beginning at noon ~

Dial-In Information

CANCELED
Topic: LASSP & AEP Seminar - Feng Wang - UC Berkeley
Time: May 10, 2022 12:20 PM Eastern Time (US and Canada)
Join Zoom Meeting:
https://cornell.zoom.us/j/95951494398?pwd=dXNEaTZBbzYxdmJaRVFWa215aTBFUT09
Meeting ID: 959 5149 4398
Passcode: 019242

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Event Type

Colloquium

Departments

LASSP, Applied and Engineering Physics

Tags

lassp_and_aep_seminar, lassp

Contact E-Mail

lmr268@cornell.edu

Contact Name

Lea Reagan

Contact Phone

607-255-9684

Speaker

Feng Wang

Speaker Affiliation

University of California - Berkeley

Dept. Web Site

https://physics.berkeley.edu/people/faculty/feng-wang

Open To

Public

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