Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field

doi:10.1088/1674-1056/ab9740

中国物理B ›› 2020, Vol. 29 ›› Issue (8): 87401-087401.doi: 10.1088/1674-1056/ab9740

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇下一篇

Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field

1 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100190, China;
3 State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology and the Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai 200050, China;
4 Songshan Lake Materials Laboratory, Dongguan 523808, China

收稿日期:2020-04-30 修回日期:2020-05-27 出版日期:2020-08-05 发布日期:2020-08-05
通讯作者: Dongning Zheng E-mail:dzheng@iphy.ac.cn
基金资助:
Project supported by the Chinese Academy of Sciences (Grant No. XDB25000000).

Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field

Mudassar Nazir^1,2, Xiaoyan Yang(杨晓燕)³, Huanfang Tian(田焕芳)¹, Pengtao Song(宋鹏涛)^1,2, Zhan Wang(王战)^1,2, Zhongcheng Xiang(相忠诚)¹, Xueyi Guo(郭学仪)¹, Yirong Jin(金贻荣)¹, Lixing You(尤立星)³, Dongning Zheng(郑东宁)^1,2,4

1 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100190, China;
3 State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology and the Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai 200050, China;
4 Songshan Lake Materials Laboratory, Dongguan 523808, China

Received:2020-04-30 Revised:2020-05-27 Online:2020-08-05 Published:2020-08-05
Contact: Dongning Zheng E-mail:dzheng@iphy.ac.cn
Supported by:
Project supported by the Chinese Academy of Sciences (Grant No. XDB25000000).

摘要/Abstract

摘要： We study superconducting properties of NbN thin film samples with different thicknesses and an ultra-thin NbTiN meander nanowire sample. For the ultra-thin samples, we found that the temperature dependence of upper critical field (H_c2) in parallel to surface orientation shows bending curvature close to critical temperature T_c, suggesting a two-dimensional (2D) nature of the samples. The 2D behavior is further supported by the angular dependence measurements of H_c2 for the thinnest samples. The temperature dependence of parallel upper critical field for the thick films could be described by a model based on the anisotropic Ginzburg-Landau theory. Interestingly, the results measured in the field perpendicular to the film surface orientation show a similar bending curvature but in a much narrow temperature region close to T_c for the ultra-thin samples. We suggest that this feature could be due to suppression of pair-breaking caused by local in-homogeneity. We further propose the temperature dependence of perpendicular H_c2 as a measure of uniformity of superconducting ultra-thin films. For the thick samples, we find that H_c2 shows maxima for both parallel and perpendicular orientations. The H_c2 peak for the perpendicular orientation is believed to be due to the columnar structure formed during the growth of the thick films. The presence of columnar structure is confirmed by transmission electron microscopy (TEM). In addition, we have measured the angular dependence of magneto-resistance, and the results are consistent with the H_c2 data.

关键词: NbN micro-bridges and NbTiN meander nanowire, upper critical field, low dimensionality, anisotropic magneto-resistance

Abstract: We study superconducting properties of NbN thin film samples with different thicknesses and an ultra-thin NbTiN meander nanowire sample. For the ultra-thin samples, we found that the temperature dependence of upper critical field (H_c2) in parallel to surface orientation shows bending curvature close to critical temperature T_c, suggesting a two-dimensional (2D) nature of the samples. The 2D behavior is further supported by the angular dependence measurements of H_c2 for the thinnest samples. The temperature dependence of parallel upper critical field for the thick films could be described by a model based on the anisotropic Ginzburg-Landau theory. Interestingly, the results measured in the field perpendicular to the film surface orientation show a similar bending curvature but in a much narrow temperature region close to T_c for the ultra-thin samples. We suggest that this feature could be due to suppression of pair-breaking caused by local in-homogeneity. We further propose the temperature dependence of perpendicular H_c2 as a measure of uniformity of superconducting ultra-thin films. For the thick samples, we find that H_c2 shows maxima for both parallel and perpendicular orientations. The H_c2 peak for the perpendicular orientation is believed to be due to the columnar structure formed during the growth of the thick films. The presence of columnar structure is confirmed by transmission electron microscopy (TEM). In addition, we have measured the angular dependence of magneto-resistance, and the results are consistent with the H_c2 data.

Key words: NbN micro-bridges and NbTiN meander nanowire, upper critical field, low dimensionality, anisotropic magneto-resistance

中图分类号: (Micro- and nanoscale pattern formation)

81.16.Rf

74.78.-w (Superconducting films and low-dimensional structures) 74.25.-q (Properties of superconductors) 74.25.F- (Transport properties)

Mudassar Nazir, 杨晓燕, 田焕芳, 宋鹏涛, 王战, 相忠诚, 郭学仪, 金贻荣, 尤立星, 郑东宁. Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field[J]. 中国物理B, 2020, 29(8): 87401-087401.

Mudassar Nazir, Xiaoyan Yang(杨晓燕), Huanfang Tian(田焕芳), Pengtao Song(宋鹏涛), Zhan Wang(王战), Zhongcheng Xiang(相忠诚), Xueyi Guo(郭学仪), Yirong Jin(金贻荣), Lixing You(尤立星), Dongning Zheng(郑东宁). Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field[J]. Chin. Phys. B, 2020, 29(8): 87401-087401.

参考文献 40

[1]	Jha R, Kumar A and Awana V P S 2012 AIP Conf. Proc. 1447 867
[2]	Vasyutin M A, Kuz'michev N D and Shilkin D A 2016 Phys. Solid State 58 236 doi: 10.1134/S1063783416020311
[3]	Hazra D, Tsavdaris N, Jebari S, Grimm A, Blanchet F, Mercier F, Blanquet E, Chapelier C and Hofheinz M 2016 Supercond. Sci. Technol. 29 105011 doi: 10.1088/0953-2048/29/10/105011
[4]	Zhang C, Zhang W, Huang J, You L, Li H, Lv C, Sugihara T, Watanabe M, Zhou H, Wang Z and Xie X 2019 AIP Adv. 9 075214 doi: 10.1063/1.5095842
[5]	Zhang W, You L, Li H, Huang J, Lv C, Zhang L, Liu X, Wu J, Wang Z and Xie X 2017 Sci. Chin. Phys. Mech. & Astron. 60 120314 doi: Chin. Phys. Mech.
[6]	Liu J, Zhang L Q, Jiang Z N et al. 2016 Chin. Phys. Lett. 33 088502 doi: 10.1088/0256-307X/33/8/088502
[7]	Zhao W, Wang Q, Liu M, Zhang W, Wang Y, Chen M, Guo Y, He K, Chen X, Wang Y, Wang J, Xie X, Niu Q, Wang L, Ma X, Jain J K, Chan M H W and Xue Q K 2013 Solid State Commun. 165 59 doi: 10.1016/j.ssc.2013.04.025
[8]	Matsuda Y, Komiyama S, Onogi T, Terashima T, Shimura K and Bando Y 1993 Phys. Rev. B 48 10498 doi: 10.1103/PhysRevB.48.10498
[9]	Inoue M, Matsushita H, Hayakawa H and Ohbayashi K 1995 Phys. Rev. B 51 15448 doi: 10.1103/PhysRevB.51.15448
[10]	Fábrega L, Camón A, Fernández-Martínez I, Sesé J, Parra-Borderías M, Gil O, González-Arrabal R, Costa-Krämer J L and Briones F 2011 Supercond. Sci. Technol. 24 075014 doi: 10.1088/0953-2048/24/7/075014
[11]	Chun C S L, Zheng G G, Vincent J L and Schuller I K 1984 Phys. Rev. B 29 4915 doi: 10.1103/PhysRevB.29.4915
[12]	Wong H K and Ketterson J B 1986 J. Low Temp. Phys. 63 139 doi: 10.1007/BF00682067
[13]	Locquet J P, Neerinck D, Vanderstraeten H, Sevenhans W, Haesendonck C V, Bruynseraede Y, Homma H and Schuller I K 1987 Jap. J. Appl. Phys. 26 1431 doi: 10.7567/JJAPS.26S3.1431
[14]	Gao Z X, Osquiguil E, Maenhoudt M, Wuyts B, Libbrecht S and Bruynseraede Y 1993 Phys. Rev. Lett. 71 3210 doi: 10.1103/PhysRevLett.71.3210
[15]	Armenio A A, Cirillo C, Iannone G, Prischepa S L and Attanasio C 2007 Phys. Rev. B 76 024515 doi: 10.1103/PhysRevB.76.024515
[16]	Gupta A, Singh G, Kumar D, Kishan H and Budhani R C 2013 Appl. Phys. Lett. 103 182602 doi: 10.1063/1.4827259
[17]	Bo H, Ren T, Chen Z et al. 2019 Chin. Phys. B 28 067402 doi: 10.1088/1674-1056/28/6/067402
[18]	Gong X X, He X Z, Peng C X, et al. 2015 Chin. Phys. Lett. 32 067402 doi: 10.1088/0256-307X/32/6/067402
[19]	Zhang W H, Sun Y, Zhang J S et al. 2014 Chin. Phys. Lett. 31 017401 doi: 10.1088/0256-307X/31/1/017401
[20]	Nam H, Chen H, Adams P W, Guan S Y, Chuang T M, Chang C S, MacDonald A H and Shih C K 2018 Nat. Coms. 9 5431 doi: 10.1038/s41467-018-07778-7
[21]	Yang X, You L, Zhang L, Lv C, Li H, Liu X, Zhou H and Wang Z 2018 IEEE Trans. Appl. Supercond. 28 1
[22]	Naugle D G, Glover R E and Moormann W 1971 Physica 55 250 doi: 10.1016/0031-8914(71)90258-8
[23]	Quateman J H 1986 Phys. Rev. B 34 1948 doi: 10.1103/PhysRevB.34.1948
[24]	Minhaj M S M, Meepagala S, Chen J T and Wenger L E 1994 Phys. Rev. B 49 15235 doi: 10.1103/PhysRevB.49.15235
[25]	Bose S, Raychaudhuri P, Banerjee R, Vasa P and Ayyub P 2005 Phys. Rev. Lett. 95 147003 doi: 10.1103/PhysRevLett.95.147003
[26]	Schneider T and Locquet J P 1991 Phys. C:Supercond. 179 125 doi: 10.1016/0921-4534(91)90020-Y
[27]	Joshi L M, Verma A, Rout P K, Kaur M, Gupta A and Budhani R C 2017 Phys. C:Supercond. Its Appl. 542 12 doi: 10.1016/j.physc.2017.08.008
[28]	Zhao L, Jin Y R, Li J, Deng H and Zheng D N 2014 Chin. Phys. B 23 087402 doi: 10.1088/1674-1056/23/8/087402
[29]	Broussard P 2017 J. Low Temp. Phys. 189 108 doi: 10.1007/s10909-017-1792-0
[30]	Haberkorn N, Zhang Y Y, Kim J, McCleskey T M, Burrell A K, Depaula R F, Tajima T, Jia Q X and Civale L 2013 Supercond. Sci. Technol. 26 105023 doi: 10.1088/0953-2048/26/10/105023
[31]	Sharma C H, Surendran A P, Varma S S and Thalakulam M 2018 Commun. Phys. 1 90 doi: 10.1038/s42005-018-0091-7
[32]	Tinkham M 1996 Introduction to Superconductivity, 2nd Edn. (New York:McGraw-Hill) pp. 316-322
[33]	Harper F E and Tinkham M 1968 Phys. Rev. 172 441 doi: 10.1103/PhysRev.172.441
[34]	Ashkin M and Gavaler J R 1978 J. Appl. Phys. 49 2449 doi: 10.1063/1.325089
[35]	Ashkin M, Gavaler J R, Greggi J and Decroux M 1984 J. Appl. Phys. 55 1044 doi: 10.1063/1.333185
[36]	Cirillo C, Prischepa S L, Salvato M, Attanasio C, Hesselberth M and Aarts J 2005 Phys. Rev. B 72 144511 doi: 10.1103/PhysRevB.72.144511
[37]	Takezawa N, Koyama T and Tachiki M 1993 Physica C 207 231 doi: 10.1016/0921-4534(93)90304-9
[38]	Cooley L D and Hawes C D 1999 J. Appl. Phys. 86 5696 doi: 10.1063/1.371581
[39]	Attanasio C, Coccorese C, Mercaldo L V, Salvato M, Maritato L, Lykov A N, Prischepa S L and Falco C M 1998 Phys. Rev. B 57 6056
[40]	Schneider T and Schmidt A 1993 Phys. Rev. B 47 5915 doi: 10.1103/PhysRevB.47.5915

Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field

Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field

RichHTML

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 40

相关文章 5

Metrics

本文评价

推荐阅读 0

[1]	倪顺利, 胡卫, 沈沛沛, 魏忠旭, 刘少博, 李栋, 袁洁, 俞理, 金魁, 周放, 董晓莉, 赵忠贤. Different behavior of upper critical field in Fe_1-xSe single crystals[J]. 中国物理B, 2019, 28(12): 127401-127401.
[2]	曹光旱, 朱增伟. Superconductivity with peculiar upper critical fields in quasi-one-dimensional Cr-based pnictides[J]. 中国物理B, 2018, 27(10): 107401-107401.
[3]	苑冬娜, 黄裕龙, 倪顺利, 周花雪, 毛义元, 胡卫, 袁洁, 金魁, 张广铭, 董晓莉, 周放. Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization[J]. 中国物理B, 2016, 25(7): 77404-077404.
[4]	刘敏霞, 甘子钊. The upper critical field in two-band layered superconductors[J]. 中国物理B, 2007, 16(3): 826-833.
[5]	王淑芳, 刘震, 朱亚彬, 周岳亮, 陈正豪, 吕惠宾, 杨国桢. Anisotropy of the upper critical field in c-axis oriented MgB₂ thin films[J]. 中国物理B, 2004, 13(7): 1120-1123.