超导能隙振荡: 到底来自配对密度波还是拆对散射?

殷嘉鑫; 王强华

doi:10.7498/aps.73.20240807

摘要

早在1965年, 于渌先生发表在《》的经典理论工作就指出: 超导能隙在磁性杂质周围会产生微弱的周期性振荡. 近十年来, 一系列高分辨率的扫描隧道显微实验观测到超导体内能隙在空间中的微弱振荡行为并指认为配对密度波. 据此情况, 李东海等理论学者近期指出, 在多种情况下, 杂质拆对散射构成的干涉效应也会导致能隙在空间形成周期性振荡. 我们讨论这两种观点的对立与统一, 以及它们和实验的联系.

关键词:

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.

Keywords:

作者及机构信息

殷嘉鑫¹,
王强华²

1.
南方科技大学物理系, 深圳　518055

2.
南京大学物理学院, 固体微结构物理国家重点实验室, 南京　210093

通信作者: 殷嘉鑫, yinjx@sustech.edu.cn

Authors and contacts

Yin Jia-Xin¹,
Wang Qiang-Hua²

1.
Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China

2.
National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China

Corresponding author: Yin Jia-Xin, yinjx@sustech.edu.cn

文章全文 : translate this paragraph

参考文献

[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

施引文献

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

Fig. 1. Superconducting gap modulations induced by pair density waves (a) and pair-breaking scatterings (b).

下载: 全尺寸图片幻灯片

图 2 于渌对磁性杂质周围能隙振荡的推导与量级估算, 节选自文献[13]

Fig. 2. Results on superconducting gap modulations near the magnetic impurities by Lu Yu from Ref. [13].

下载: 全尺寸图片幻灯片

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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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超导能隙振荡: 到底来自配对密度波还是拆对散射?