Universität zu Köln

Scherer, Michael M., Kennes, Dante M. and Classen, Laura (2022). Chiral superconductivity with enhanced quantized Hall responses in moire transition metal dichalcogenides. npj Quantum Mater., 7 (1). BERLIN: NATURE PORTFOLIO. ISSN 2397-4648

Full text not available from this repository.

Abstract

Experimental demonstrations of tunable correlation effects in magic-angle twisted bilayer graphene have put two-dimensional moire quantum materials at the forefront of condensed-matter research. Other twisted few-layer graphitic structures, boron-nitride, and homo- or hetero-stacks of transition metal dichalcogenides (TMDs) have further enriched the opportunities for analysis and utilization of correlations in these systems. Recent experiments within the latter material class confirmed the relevance of many-body interactions and demonstrated the importance of their extended range. Since the interaction, its range, and the filling can be tuned experimentally by twist angle, substrate engineering and gating, we here explore Fermi surface instabilities and resulting phases of matter of hetero-bilayer TMDs. Using an unbiased renormalization group approach, we establish in particular that hetero-bilayer TMDs are platforms to realize topological superconductivity with winding number vertical bar N vertical bar = 4. We show that this state reflects in pronounced experimental signatures, such as distinct quantum Hall features.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Scherer, Michael M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kennes, Dante M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Classen, Laura UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-686281
DOI:	10.1038/s41535-022-00504-z
Journal or Publication Title:	npj Quantum Mater.
Volume:	7
Number:	1
Date:	2022
Publisher:	NATURE PORTFOLIO
Place of Publication:	BERLIN
ISSN:	2397-4648
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FUNCTIONAL RENORMALIZATION-GROUP; MAGIC-ANGLE; CORRELATED STATES; INSULATOR; PHASES; MOTT Multiple languages Materials Science, Multidisciplinary; Quantum Science & Technology; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68628