|
|
|
Ac Josephson effect in Corbino-geometry Josephson junctions constructed on Bi2Te3 surface |
| Yunxiao Zhang(张云潇)1,2, Zhaozheng Lyu(吕昭征)1,2,†,‡, Xiang Wang(王翔)1,2, Enna Zhuo(卓恩娜)1,2, Xiaopei Sun(孙晓培)1,2, Bing Li(李冰)1,2, Jie Shen(沈洁)1,2,3, Guangtong Liu(刘广同)1,2,3,4, Fanming Qu(屈凡明)1,2,3,4, and Li Lü(吕力)1,2,3,4,§ |
1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3. Songshan Lake Materials Laboratory, Dongguan 523808, China;
4. Hefei National Laboratory, Hefei 230088, China |
|
|
|
|
Abstract Recently, a Corbino-geometry type of Josephson junction constructed on the surface of topological insulators has been proposed for hosting and braiding Majorana zero modes. As a first step to test this proposal, we successfully fabricated Corbino-geometry Josephson junctions (JJs) on the surface of Bi2Te3 flakes. Ac Josephson effect with fractional Shapiro steps was observed in the Corbino-geometry JJs while the flux in the junction area was quantized. By analyzing the experimental data using the resistively shunted Josephson junction model, we found that the Corbino-geometry JJs exhibit a skewed current—phase relation due to its high transparency. The results suggest that Corbino-geometry JJs constructed on the surface of topological insulators may provide a promising platform for studying Majorana-related physics.
|
Received: 07 August 2022
Accepted manuscript online:
|
|
PACS:
|
74.50.+r
|
(Tunneling phenomena; Josephson effects)
|
| |
85.25.Cp
|
(Josephson devices)
|
| |
05.60.Gg
|
(Quantum transport)
|
|
| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 92065203, 11527806, 12074417, 11874406, 11774405, and E2J1141), the National Basic Research Program of China (Grant Nos. 2016YFA0300601, 2017YFA0304700, and 2015CB921402), the Strategic Priority Research Program B of the Chinese Academy of Sciences (Grant Nos. XDB33010300, DB28000000, and XDB07010100), the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD302600), and Synergetic Extreme Condition User Facility (SECUF) sponsored by the National Development and Reform Commission, China. |
Corresponding Authors:
Zhaozheng Lyu, Li Lü
E-mail: lyuzhzh@iphy.ac.cn;lilu@iphy.ac.cn
|
Cite this article:
Yunxiao Zhang(张云潇), Zhaozheng Lyu(吕昭征), Xiang Wang(王翔), Enna Zhuo(卓恩娜), Xiaopei Sun(孙晓培), Bing Li(李冰), Jie Shen(沈洁), Guangtong Liu(刘广同), Fanming Qu(屈凡明), and Li Lü(吕力) Ac Josephson effect in Corbino-geometry Josephson junctions constructed on Bi2Te3 surface 2022 Chin. Phys. B 31 107402
|
[1] Kitaev A Y 2001 Physics-Uspekhi 44 131
[2] Hasan M Z and Kane C L 2010 Rev. Mod. Phys. 82 3045
[3] Nayak C, Simon S H, Stern A, Freedman M and Das S Sarma 2008 Rev. Mod. Phys. 80 1083
[4] Ivanov D A 2001 Phys. Rev. Lett. 86 268
[5] Fu L and Kane C L 2008 Phys. Rev. Lett. 100 096407
[6] Stanescu T D, Lutchyn R M and Das Sarma S 2011 Phys. Rev. B 84 144522
[7] Lutchyn R M, Sau J D and Das Sarma S 2010 Phys. Rev. Lett. 105 077001
[8] Oreg Y, Refael G and von Oppen F 2010 Phys. Rev. Lett. 105 177002
[9] Deng M T, Yu C L, Huang G Y, Larsson M, Caroff P and Xu H Q 2012 Nano Lett. 12 6414
[10] Mourik V, Zuo K, Frolov S M, Plissard S R, Bakkers E P A M and Kouwenhoven L P 2012 Science 336 1003
[11] Das A, Ronen Y, Most Y, Oreg Y, Heiblum M and Shtrikman H 2012 Nat. Phys. 8 887
[12] Deng M T, Vaitiekėnas S, Hansen E B, Danon J, Leijnse M, Flensberg K, Nygård J, Krogstrup P and Marcus C M 2016 Science 354 1557
[13] Yang F, Ding Y, Qu F, et al. 2012 Phys. Rev. B 85 104508
[14] Lyu Z, Pang Y, Wang J, et al. 2018 Phys. Rev. B 98 155403
[15] Yang G, Lyu Z, Wang J, et al. 2019 Phys. Rev. B 100 180501
[16] Kayyalha M, Kazakov A, Miotkowski I, Khlebnikov S, Rokhinson L P and Chen Y P 2020 npj Quantum Materials 5 7
[17] Vijay S, Hsieh T H and Fu L 2015 Phys. Rev. X 5 041038
[18] Park S, Sim H S and Recher P 2020 Phys. Rev. Lett. 125 187702
[19] Park S and Recher P 2015 Phys. Rev. Lett. 115 246403
[20] Hadfield R H, Burnell G, Kang D J, Bell C and Blamire M G 2003 Phys. Rev. B 67 144513
[21] Clem J R 2010 Phys. Rev. B 82 174515
[22] Golubov A A, Kupriyanov M Y and Il'ichev E 2004 Rev. Mod. Phys. 76 411
[23] Spanton E M, Deng M, Vaitiekėnas S, Krogstrup P, Nygård J, Marcus C M and Moler K A 2017 Nat. Phys. 13 1177
[24] English C D, Hamilton D R, Chialvo C, Moraru I C, Mason N and Van Harlingen D J 2016 Phys. Rev. B 94 115435
[25] Sochnikov I, Maier L, Watson C A, et al. 2015 Phys. Rev. Lett. 114 066801
[26] Gupta G, Jalil M B and Liang G 2014 Sci. Rep. 4 6838
[27] Kunakova G, Bauch T, Palermo X, Salvato M, Andzane J, Erts D and Lombardi F 2021 Phys. Rev. Appl. 16 024038 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
