Non-local d x y nematicity and the missing electron pocket in FeSe

Abstract The origin of spontaneous electronic nematic ordering provides important information for understanding iron-based superconductors. Here, we analyze a scenario where the d x y orbital strongly contributes to nematic ordering in FeSe. We show that the addition of d x y nematicity to a pure d...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Luke C. Rhodes, Jakob Böker, Marvin A. Müller, Matthias Eschrig, Ilya M. Eremin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/d9c04383496b49e3bf148728f40b3459
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d9c04383496b49e3bf148728f40b3459
record_format	dspace
spelling	oai:doaj.org-article:d9c04383496b49e3bf148728f40b34592021-12-02T16:50:36ZNon-local d x y nematicity and the missing electron pocket in FeSe10.1038/s41535-021-00341-62397-4648https://doaj.org/article/d9c04383496b49e3bf148728f40b34592021-05-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00341-6https://doaj.org/toc/2397-4648Abstract The origin of spontaneous electronic nematic ordering provides important information for understanding iron-based superconductors. Here, we analyze a scenario where the d x y orbital strongly contributes to nematic ordering in FeSe. We show that the addition of d x y nematicity to a pure d x z /d y z order provides a natural explanation for the unusual Fermi surface and correctly reproduces the strongly anisotropic momentum dependence of the superconducting gap. We predict a Lifshitz transition of an electron pocket mediated by temperature and sulfur doping, whose signatures we discuss by analysing available experimental data. We present the variation of momentum dependence of the superconducting gap upon suppression of nematicity. Our quantitatively accurate model yields the transition from tetragonal to nematic FeSe and the FeSe1−x S x series, and puts strong constraints on possible nematic mechanisms.Luke C. RhodesJakob BökerMarvin A. MüllerMatthias EschrigIlya M. EreminNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Luke C. Rhodes Jakob Böker Marvin A. Müller Matthias Eschrig Ilya M. Eremin Non-local d x y nematicity and the missing electron pocket in FeSe
description	Abstract The origin of spontaneous electronic nematic ordering provides important information for understanding iron-based superconductors. Here, we analyze a scenario where the d x y orbital strongly contributes to nematic ordering in FeSe. We show that the addition of d x y nematicity to a pure d x z /d y z order provides a natural explanation for the unusual Fermi surface and correctly reproduces the strongly anisotropic momentum dependence of the superconducting gap. We predict a Lifshitz transition of an electron pocket mediated by temperature and sulfur doping, whose signatures we discuss by analysing available experimental data. We present the variation of momentum dependence of the superconducting gap upon suppression of nematicity. Our quantitatively accurate model yields the transition from tetragonal to nematic FeSe and the FeSe1−x S x series, and puts strong constraints on possible nematic mechanisms.
format	article
author	Luke C. Rhodes Jakob Böker Marvin A. Müller Matthias Eschrig Ilya M. Eremin
author_facet	Luke C. Rhodes Jakob Böker Marvin A. Müller Matthias Eschrig Ilya M. Eremin
author_sort	Luke C. Rhodes
title	Non-local d x y nematicity and the missing electron pocket in FeSe
title_short	Non-local d x y nematicity and the missing electron pocket in FeSe
title_full	Non-local d x y nematicity and the missing electron pocket in FeSe
title_fullStr	Non-local d x y nematicity and the missing electron pocket in FeSe
title_full_unstemmed	Non-local d x y nematicity and the missing electron pocket in FeSe
title_sort	non-local d x y nematicity and the missing electron pocket in fese
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d9c04383496b49e3bf148728f40b3459
work_keys_str_mv	AT lukecrhodes nonlocaldxynematicityandthemissingelectronpocketinfese AT jakobboker nonlocaldxynematicityandthemissingelectronpocketinfese AT marvinamuller nonlocaldxynematicityandthemissingelectronpocketinfese AT matthiaseschrig nonlocaldxynematicityandthemissingelectronpocketinfese AT ilyameremin nonlocaldxynematicityandthemissingelectronpocketinfese
_version_	1718383069708156928

Non-local d x y nematicity and the missing electron pocket in FeSe

Ejemplares similares