nARPES of Quantum materials at MAESTRO

• Aaron Bostwick (Advanced Light Source (ALS), Lawrence Berkeley National Laboratory, USA)

Room: Maxwell Auditorium Angle-resolved photoemission spectroscopy (ARPES) is the premier technique for determining the electronic band structure of solids and has found wide application across many classes of materials, including oxides, semiconductors, metals, and low-dimensional materials and surfaces. Among the important topics it addresses are the many-body interactions that underpin the ground- and excited-state functionalities of materials. Recently, the development of nanoARPES using microfocused X-ray beams has opened ARPES to a wider class of samples and enabled in situ measurements of 2D devices under applied electric fields, currents, and strain, as well as modification with focused femtosecond laser pulses. In this talk I will give an introduction to the ARPES technique and the MAESTRO facility, and share some of our recent work on the band structure and many-body interactions in 2D heterostructures of chalcogenides, graphene, and boron nitride, and on light-induced metastable phases in 1T-TaS₂.

Visits to the beamlines Room: Maxwell Auditorium