The Advanced Photon Source
a U.S. Department of Energy Office of Science User Facility

Infrared and Terahertz Near-field Spectroscopy and Microscopy of Correlated Materials

Type Of Event
Presentation
Sponsoring Division
XSD
Location
432/C010
Building Number
432
Room Number
C010
Speaker
Ziawei Zhang, Stony Brook University
Host
Haidan Wen
Start Date
03-19-2019
Start Time
11:00 a.m.
Description

Abstract:
In my presentation, I will introduce the working principle of infrared and terahertz scattering-type scanning near field optical microscopy (s-SNOM) and spectroscopy. Two of my representative experiments with IR s-SNOM on the insulator-to-metal phase transition of correlated electron materials Ca2RuO4 and VO2 will be talked about. I will then demonstrate optical pump terahertz near-field probe (n-OPTP) and optical pump terahertz near field emission (n-OPTE) experiments on graphene and InAs.

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