Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors

Abstract High-temperature superconductivity in iron-pnictides/chalcogenides arises in balance with several electronic and lattice instabilities. Beside the antiferromagnetic order, the orbital anisotropy between Fe 3d xz and 3d yz occurs near the orthorhombic structural transition in several parent...

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Autores principales:	T. Sonobe, T. Shimojima, A. Nakamura, M. Nakajima, S. Uchida, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, K. Ohgushi, K. Ishizaka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/251d49bca3b547f8bf03b30945d0da37
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spelling	oai:doaj.org-article:251d49bca3b547f8bf03b30945d0da372021-12-02T15:08:42ZOrbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors10.1038/s41598-018-20332-12045-2322https://doaj.org/article/251d49bca3b547f8bf03b30945d0da372018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-20332-1https://doaj.org/toc/2045-2322Abstract High-temperature superconductivity in iron-pnictides/chalcogenides arises in balance with several electronic and lattice instabilities. Beside the antiferromagnetic order, the orbital anisotropy between Fe 3d xz and 3d yz occurs near the orthorhombic structural transition in several parent compounds. However, the extent of the survival of orbital anisotropy against the ion-substitution remains to be established. Here we report the composition (x) and temperature (T) dependences of the orbital anisotropy in the electronic structure of a BaFe2(As1−x P x )2 system by using angle-resolved photoemission spectroscopy. In the low-x regime, the orbital anisotropy starts to evolve on cooling from high temperatures above both antiferromagnetic and orthorhombic transitions. By increasing x, it is gradually suppressed and survives in the optimally doped regime. We find that the in-plane orbital anisotropy persists in a large area of the nonmagnetic phase, including the superconducting dome. These results suggest that the rotational symmetry-broken electronic state acts as the stage for superconductivity in BaFe2(As1−x P x )2.T. SonobeT. ShimojimaA. NakamuraM. NakajimaS. UchidaK. KihouC. H. LeeA. IyoH. EisakiK. OhgushiK. IshizakaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q T. Sonobe T. Shimojima A. Nakamura M. Nakajima S. Uchida K. Kihou C. H. Lee A. Iyo H. Eisaki K. Ohgushi K. Ishizaka Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors
description	Abstract High-temperature superconductivity in iron-pnictides/chalcogenides arises in balance with several electronic and lattice instabilities. Beside the antiferromagnetic order, the orbital anisotropy between Fe 3d xz and 3d yz occurs near the orthorhombic structural transition in several parent compounds. However, the extent of the survival of orbital anisotropy against the ion-substitution remains to be established. Here we report the composition (x) and temperature (T) dependences of the orbital anisotropy in the electronic structure of a BaFe2(As1−x P x )2 system by using angle-resolved photoemission spectroscopy. In the low-x regime, the orbital anisotropy starts to evolve on cooling from high temperatures above both antiferromagnetic and orthorhombic transitions. By increasing x, it is gradually suppressed and survives in the optimally doped regime. We find that the in-plane orbital anisotropy persists in a large area of the nonmagnetic phase, including the superconducting dome. These results suggest that the rotational symmetry-broken electronic state acts as the stage for superconductivity in BaFe2(As1−x P x )2.
format	article
author	T. Sonobe T. Shimojima A. Nakamura M. Nakajima S. Uchida K. Kihou C. H. Lee A. Iyo H. Eisaki K. Ohgushi K. Ishizaka
author_facet	T. Sonobe T. Shimojima A. Nakamura M. Nakajima S. Uchida K. Kihou C. H. Lee A. Iyo H. Eisaki K. Ohgushi K. Ishizaka
author_sort	T. Sonobe
title	Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors
title_short	Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors
title_full	Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors
title_fullStr	Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors
title_full_unstemmed	Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors
title_sort	orbital-anisotropic electronic structure in the nonmagnetic state of bafe2(as1−x p x )2 superconductors
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/251d49bca3b547f8bf03b30945d0da37
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_version_	1718388049832837120

Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe2(As1−x P x )2 superconductors

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