Correlated physics in an artificial triangular anti-dot lattice

Krix, ZE; Scammell, HD; Sushkov, OP

Correlated physics in an artificial triangular anti-dot lattice

Krix, ZE Scammell, HD Sushkov, OP

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Publisher:: American Physical Society (APS)
Publication Type:: Journal Article
Citation:: Physical Review B, 2022, 105, (7), pp. 075120
Issue Date:: 2022-02-15

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Field	Value	Language
dc.contributor.author	Krix, ZE
dc.contributor.author	Scammell, HD
dc.contributor.author	Sushkov, OP
dc.date.accessioned	2023-03-10T02:04:09Z
dc.date.available	2023-03-10T02:04:09Z
dc.date.issued	2022-02-15
dc.identifier.citation	Physical Review B, 2022, 105, (7), pp. 075120
dc.identifier.issn	2469-9950
dc.identifier.issn	2469-9969
dc.identifier.uri	http://hdl.handle.net/10453/166935
dc.description.abstract	This work considers a two-dimensional artificial triangular anti-dot lattice (TAL): a semiconductor-based artificial crystal hosting Dirac cones, flat bands, and Fermi surface nesting. All such single-particle features have dramatic implications for the emergent correlated phases. This work predominantly focuses on the existence of a robust flat band and enumerates the possible correlated phases that follow. We find that the flat band is generated, in the single-particle theory, when charges align themselves along a kagome lattice with the same period as the TAL. The correlated phases are studied using complementary techniques of expansion in strong and weak Coulomb interactions. Our microscopic modeling shows that for the purpose of generating strongly correlated phases, hole-doped TALs have significant advantages over electron-doped ones.
dc.language	en
dc.publisher	American Physical Society (APS)
dc.relation.ispartof	Physical Review B
dc.relation.isbasedon	10.1103/PhysRevB.105.075120
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Fluids & Plasmas
dc.title	Correlated physics in an artificial triangular anti-dot lattice
dc.type	Journal Article
utslib.citation.volume	105
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access	*
dc.date.updated	2023-03-10T02:04:08Z
pubs.issue	7
pubs.publication-status	Published
pubs.volume	105
utslib.citation.issue	7

Abstract:

This work considers a two-dimensional artificial triangular anti-dot lattice (TAL): a semiconductor-based artificial crystal hosting Dirac cones, flat bands, and Fermi surface nesting. All such single-particle features have dramatic implications for the emergent correlated phases. This work predominantly focuses on the existence of a robust flat band and enumerates the possible correlated phases that follow. We find that the flat band is generated, in the single-particle theory, when charges align themselves along a kagome lattice with the same period as the TAL. The correlated phases are studied using complementary techniques of expansion in strong and weak Coulomb interactions. Our microscopic modeling shows that for the purpose of generating strongly correlated phases, hole-doped TALs have significant advantages over electron-doped ones.

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http://hdl.handle.net/10453/166935