Topological quantum chemistry description of interacting-electron systems

Date

Jan 15, 2024

Time

2:50 PM - 4:20 PM

Speaker

Mikel Iraola

Affiliation

IFW-Dresden

Series

TUD Physik-IFMP Institutsseminar

Language

en

Main Topic

Physik

Other Topics

Physik

Host

D. Peets

Description

Abstract:

The intense attention attracted by topological materials in the last decades has led to the development of efficient numerical methods and theoretical frameworks for diagnosing and classifying topology in actual materials. In particular, topological quantum chemistry (TQC) formalism describes the relationship between crystal symmetries and topology in all space groups, allowing for a systematic classification of topological phases in crystals. However, these techniques rely on the independent-electron approximation, and it remains unclear to what extent they can describe topology in interacting materials. Here, we explore the application of TQC to interacting-electron systems. First, we apply TQC to revisit the topology in SmB6, a prototype of a heavy-fermion insulator. Second, we report on the use of TQC on the single-particle Green's function as a method to classify interacting topological phases. The Hubbard diamond chain serves as a testbed for this classification.

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Links

• Webseite
• Termindetails auf den Webseiten der TU Dresden (https://tu-dresden.de)

Last modified: Jan 12, 2024, 7:37:05 AM