Topological quantum chemistry description of interacting-electron systems

Datum

29.03.2023

Zeit

14:00 - 15:00

Sprecher

Mikel Iraola

Zugehörigkeit

Donostia International Physics Center, San Sebastian

Sprache

en

Hauptthema

Materialien

Host

Grit Rötzer

Beschreibung

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. In this thesis, we explore the application of TQC to interacting-electron systems. We first apply TQC to investigate topology in heavy-fermion insulators. 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. .

Links

• Seminars at the IFW

Letztmalig verändert: 29.03.2023, 07:38:52