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In his seminal work published in Acta Physica Sinica in 1965, Yu Lu pointed out that the superconducting gap exhibits weak modulations near the pair-breaking magnetic impurity in a superconductor. In the past ten year, a series high-resolution scanning tunneling microscopy works reported weak superconducting gap modulations in certain superconductors and explained these phenomena as pair density waves. In line with Yu Lu’s discovery, Lee D H et al. pointed out that in many cases, the interference effect of pair-breaking scattering can also lead to superconducting gap modulations in space. We will discuss the distinction and unification of these two kinds of mechanisms, as well as their relevance to recent experimental observations.
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Keywords:
- superconductivity /
- pair density waves /
- scanning tunneling microscopy
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Google Scholar
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[9] Liu Y Z, Wei T C, He G Y, Zhang Y, Wang Z Q, Wang J 2023 Nature 618 934
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[12] Agterberg D F, Séamus Davis J C, Edkins S D, et al. 2020 Annu. Rev. Condens. Matter Phys. 11 231
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[13] 于渌 1965 21 75
Google Scholar
Yu L 1965 Acta Phys. Sin. 21 75
Google Scholar
[14] Gao Z Q, Lin Y P, Lee D H 2023 arXiv: 2310.06024 [cond-mat.supr-con]
[15] Ambegaokar V, Baratoff A 1963 Phys. Rev. Lett. 11 104
Google Scholar
[16] Jin J T, Jiang K, Yao H, Zhou Y 2022 Phys. Rev. Lett. 129 167001
Google Scholar
[17] Deng H B, Qin H L, Liu G W, et al. 2024 Nature DOI: 10.1038/s41586-024-07798-y
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图 1 配对密度波(a)与拆对杂质散射(b)造成的超导能隙振荡
Figure 1. Superconducting gap modulations induced by pair density waves (a) and pair-breaking scatterings (b).
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[1] Bardeen J, Cooper L N, Schrieffer J R 1957 Phys. Rev. 108 1175
Google Scholar
[2] Fulde P, Ferrell R A 1964 Phys. Rev. 135 A550
Google Scholar
[3] Larkin A I, Ovchinnikov Y N 1965 Sov. Phys. JETP 20 762
[4] Hamidian M, Edkins S D, Joo S H, et al. 2016 Nature 532 343
Google Scholar
[5] Du Z Y, Li H, Joo S H, Donoway E P, Lee J, Séamus Davis J C, Gu G D, Johnson P D, Fujita K 2020 Nature 580 65
Google Scholar
[6] Chen H, Yang H T, Hu B, et al. 2021 Nature 599 222
Google Scholar
[7] Liu X, Chong Y X, Sharma R, Davis J C S 2021 Science 372 1447
Google Scholar
[8] Zhao H, Blackwell R, Thinel M, et al. 2023 Nature 618 940
Google Scholar
[9] Liu Y Z, Wei T C, He G Y, Zhang Y, Wang Z Q, Wang J 2023 Nature 618 934
Google Scholar
[10] Aishwarya A, May-Mann J, Raghavan A, Nie L M, Romanelli M, Ran S, Saha S R, Paglione J, Butch N P, Fradkin E, Madhavan V 2023 Nature 618 928
Google Scholar
[11] Gu Q, Carroll J P, Wang S Q, Ran S, Broyles C, Siddiquee H, Butch N P, Saha S R, Paglione J, Séamus Davis J C, Liu X L 2023 Nature 618 921
Google Scholar
[12] Agterberg D F, Séamus Davis J C, Edkins S D, et al. 2020 Annu. Rev. Condens. Matter Phys. 11 231
Google Scholar
[13] 于渌 1965 21 75
Google Scholar
Yu L 1965 Acta Phys. Sin. 21 75
Google Scholar
[14] Gao Z Q, Lin Y P, Lee D H 2023 arXiv: 2310.06024 [cond-mat.supr-con]
[15] Ambegaokar V, Baratoff A 1963 Phys. Rev. Lett. 11 104
Google Scholar
[16] Jin J T, Jiang K, Yao H, Zhou Y 2022 Phys. Rev. Lett. 129 167001
Google Scholar
[17] Deng H B, Qin H L, Liu G W, et al. 2024 Nature DOI: 10.1038/s41586-024-07798-y
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