Superconducting fluctuations and charge-4
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 plaquette state at strong coupling

Qin, Qiong; Dong, Jianjun; Sheng, Yuqi; Huang, Dongchen; Yang, Yi-feng

doi:10.1103/physrevb.108.054506

Phys. Rev. B

2023

DOI: 10.1103/physrevb.108.054506

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Superconducting fluctuations and charge-4 e plaquette state at strong coupling

Qiong Qin

Jianjun Dong

Yuqi Sheng

et al.

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Cited by 3 publications

References 111 publications

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High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3Ni
Qin,
Yang
2023
Phys. Rev. B
41
0
0
0
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Mean-field study of superconductivity in the t−J square lattice model with three-site hopping

Yang,

Chen,

Qiao

et al. 2024

Phys. Rev. B

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Frustrated superconductivity and intrinsic reduction of Tc in trilayer nickelate

Qin,

Wang,

Yang

2024

TIMS

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Identifying the key factors controlling the magnitude of Tc is of critical importance in the pursuit of high-temperature superconductivity. In cuprates, Tc reaches its maximal value in trilayer structure, leading to the belief that interlayer coupling may help promote the pairing. In contrast, for the recently discovered nickelate superconductors under high pressure, the maximum Tc is reduced from about 80 K in the bilayer La3Ni2O7 to 30 K in the trilayer La4Ni3O10. Motivated by this opposite trend, we propose an interlayer pairing scenario for the superconductivity of La4Ni3O10. Our theory reveals intrinsic frustration in the spin-singlet pairing that the inner layer tends to form with both of the two outer layers respectively, leading to strong superconducting fluctuations between layers. This explains the reduction of its maximum Tc compared to that of the bilayer La3Ni2O7. Our findings support a fundamental distinction between multilayer nickelate and cuprate superconductors, and ascribe it to their different (interlayer versus intralayer) pairing mechanisms. Furthermore, our theory predicts extended s±-wave gap structures in La4Ni3O10, with varying signs and possible nodes on different Fermi pockets. We also find an intrinsic Josephson coupling with potentially interesting consequences that may be examined in future experiments. Our work reveals the possibility of rich novel physics in multilayer superconductors with interlayer pairing.

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Superconducting fluctuations and charge-4 e plaquette state at strong coupling

Cited by 3 publications

References 111 publications

High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3Ni
Qin,
Yang
2023
Phys. Rev. B
41
0
0
0
View full text Add to dashboard Cite

High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3Ni
Qin,
Yang
2023
Phys. Rev. B
41
0
0
0
View full text Add to dashboard Cite

Mean-field study of superconductivity in the t−J square lattice model with three-site hopping

Frustrated superconductivity and intrinsic reduction of <i>T</i><sub><i>c</i></sub> in trilayer nickelate

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Product

Resources

About

Superconducting fluctuations and charge-4 e plaquette state at strong coupling

Cited by 3 publications

References 111 publications

High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3NiQin, Yang 2023Phys. Rev. B41000View full textAdd to dashboardCite

High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3NiQin, Yang 2023Phys. Rev. B41000View full textAdd to dashboardCite

Mean-field study of superconductivity in the t−J square lattice model with three-site hopping

Frustrated superconductivity and intrinsic reduction of <i>T</i><sub><i>c</i></sub> in trilayer nickelate

Contact Info

Product

Resources

About

High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3Ni
Qin,
Yang
2023
Phys. Rev. B
41
0
0
0
View full text Add to dashboard Cite

High- Tc superconductivity by mobilizing local spin singlets and possible route to higher Tc in pressurized La3Ni
Qin,
Yang
2023
Phys. Rev. B
41
0
0
0
View full text Add to dashboard Cite