“Spin And Charge Transport Through Correlated States In 2D Materials and Heterostructures” by Jeanie Lau (The Ohio State University)

Date: 
Thursday, February 7, 2019 - 3:30pm to 4:30pm
Series: 
Physics and Astronomy Colloquium

Thursdays, 3:30-4:30 pm

1-434 Physics and Astronomy (map)
Reception from 3:15 p.m.
(unless otherwise posted)

 

Guest Speaker: Jeannie Lau (The Ohio State University)

Talk Title:  “Spin And Charge Transport Through Correlated States In 2D Materials and Heterostructures”

Abstract:

Low dimensional materials constitute an exciting and unusually tunable platform for investigation of correlated states. Here I will present our results on transport measurements of high quality few-layer graphene and black phosphorus devices. In Bernal-stack trilayer grapehne, we observe tunable integer and fractional quantum Hall states, and quantum parity effect at the charge neutrality point. In tetralayer graphene, we have observed a large intrinsic gap at half filling, up to 80 meV, that arises from electronic interactions in rhombohedral stacking, and multiple Lifshitz transitions in Bernal stacking. Lastly, I will discuss our recent observation of robust long distance spin transport through the antiferromagnetic state in graphene.

 

For more information, contact Yaroslav Tserkovnyak

We thank the following people for their contributions to the wine fund for the post-colloquium reception:
Professors Katsushi Arisaka, Andrea Ghez, Karoly Holczer, Huan Huang, HongWen Jiang, Per Kraus, Alexander Kusenko, Matthew Malkan, Mayank Mehta, Warren Mori, Ni Ni, Seth Putterman, Yaroslav Tserkovnyak, Vladimir Vassiliev, Shenshen Wang, and Nathan Whitehorn.

 

Location: 
1-434 PAB