Hidden one-dimensional, strongly nested, and almost half-filled Fermi surface in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ba</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>CuO</mml:mi><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
 superconductors

Worm, Paul; Kitatani, Motoharu; Tomczak, Jan M.; Si, Liang; Held, Karsten

doi:10.1103/physrevb.105.085110

Phys. Rev. B

2022

DOI: 10.1103/physrevb.105.085110

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Hidden one-dimensional, strongly nested, and almost half-filled Fermi surface in Ba2CuO3+y superconductors

Paul Worm

Motoharu Kitatani

Jan M. Tomczak

et al.

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Cited by 7 publications

References 49 publications

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Enhanced cuprate superconductivity from elongated to compressed coordination

Li,

Zhao,

Jin

2023

Physica C: Superconductivity and its Applications

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Enhanced cuprate superconductivity from elongated to compressed coordination

Li,

Zhao,

Jin

2023

Physica C: Superconductivity and its Applications

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Spin fluctuations and orbital-selective superconductivity in Ba₂CuO_4−y: A FLEX study

Zheng 郑,

Quan 全,

Zou 邹

2024

Chinese Phys. B

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Recently discovered Ba2CuO4-y provides new perspectives to the study of high-temperature superconductivity. Whereas, little is known about the spin dynamics of this material. In this work, we employ the fluctuation exchange (FLEX) approximation within the framework of spin-fluctuation mediated superconductivity to examine the behavior of the spin fluctuations of a two-orbital Hubbard model for Ba2CuO4-y. Our calculations reveal an extraordinary spin resonance mode coupled to the superconducting state in the hole-underdoped regime. Furthermore, we confirm that the coupling between the electrons and this resonance mode can lead to a “dip”-like feature in the electronic spectrum as a feedback effect. In the hole-overdoped regime, by incorporating self energy into our calculations, we obtain orbital-dependent renormalizations and show how these self-energy effects can lead to the detailed gap structures and the orbital-selective superconductivity, which could not be obtained in a previous study using random phase approximation (RPA). This research may shed a new light on searching for unconventional superconductors with higher transition temperatures.

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Electronic structure of the putative room-temperature superconductor Pb9Cu(PO4)6O

Si,

Held

2023

Phys. Rev. B

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Hidden one-dimensional, strongly nested, and almost half-filled Fermi surface in Ba2CuO3+y superconductors

Cited by 7 publications

References 49 publications

Enhanced cuprate superconductivity from elongated to compressed coordination

Enhanced cuprate superconductivity from elongated to compressed coordination

Spin fluctuations and orbital-selective superconductivity in Ba₂CuO_4−y: A FLEX study

Electronic structure of the putative room-temperature superconductor Pb9Cu(PO4)6O

Contact Info

Product

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Hidden one-dimensional, strongly nested, and almost half-filled Fermi surface in Ba2CuO3+y superconductors

Cited by 7 publications

References 49 publications

Enhanced cuprate superconductivity from elongated to compressed coordination

Enhanced cuprate superconductivity from elongated to compressed coordination

Spin fluctuations and orbital-selective superconductivity in Ba2CuO4−y: A FLEX study

Electronic structure of the putative room-temperature superconductor Pb9Cu(PO4)6O

Contact Info

Product

Resources

About

Spin fluctuations and orbital-selective superconductivity in Ba₂CuO_4−y: A FLEX study