Please wait a minute...
Chin. Phys. B, 2020, Vol. 29(8): 087401    DOI: 10.1088/1674-1056/ab9740

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

Mudassar Nazir1,2, 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
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 (Hc2) in parallel to surface orientation shows bending curvature close to critical temperature Tc, suggesting a two-dimensional (2D) nature of the samples. The 2D behavior is further supported by the angular dependence measurements of Hc2 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 Tc 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 Hc2 as a measure of uniformity of superconducting ultra-thin films. For the thick samples, we find that Hc2 shows maxima for both parallel and perpendicular orientations. The Hc2 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 Hc2 data.
Keywords:  NbN micro-bridges and NbTiN meander nanowire      upper critical field      low dimensionality      anisotropic magneto-resistance  
Received:  30 April 2020      Revised:  27 May 2020      Accepted manuscript online: 
PACS:  81.16.Rf (Micro- and nanoscale pattern formation)  
  74.78.-w (Superconducting films and low-dimensional structures)  
  74.25.-q (Properties of superconductors)  
  74.25.F- (Transport properties)  
Fund: Project supported by the Chinese Academy of Sciences (Grant No. XDB25000000).
Corresponding Authors:  Dongning Zheng     E-mail:

Cite this article: 

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 2020 Chin. Phys. B 29 087401

[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
[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
[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
[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
[6] Liu J, Zhang L Q, Jiang Z N et al. 2016 Chin. Phys. Lett. 33 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
[8] Matsuda Y, Komiyama S, Onogi T, Terashima T, Shimura K and Bando Y 1993 Phys. Rev. B 48 10498
[9] Inoue M, Matsushita H, Hayakawa H and Ohbayashi K 1995 Phys. Rev. B 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
[11] Chun C S L, Zheng G G, Vincent J L and Schuller I K 1984 Phys. Rev. B 29 4915
[12] Wong H K and Ketterson J B 1986 J. Low Temp. Phys. 63 139
[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
[14] Gao Z X, Osquiguil E, Maenhoudt M, Wuyts B, Libbrecht S and Bruynseraede Y 1993 Phys. Rev. Lett. 71 3210
[15] Armenio A A, Cirillo C, Iannone G, Prischepa S L and Attanasio C 2007 Phys. Rev. B 76 024515
[16] Gupta A, Singh G, Kumar D, Kishan H and Budhani R C 2013 Appl. Phys. Lett. 103 182602
[17] Bo H, Ren T, Chen Z et al. 2019 Chin. Phys. B 28 067402
[18] Gong X X, He X Z, Peng C X, et al. 2015 Chin. Phys. Lett. 32 067402
[19] Zhang W H, Sun Y, Zhang J S et al. 2014 Chin. Phys. Lett. 31 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
[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
[23] Quateman J H 1986 Phys. Rev. B 34 1948
[24] Minhaj M S M, Meepagala S, Chen J T and Wenger L E 1994 Phys. Rev. B 49 15235
[25] Bose S, Raychaudhuri P, Banerjee R, Vasa P and Ayyub P 2005 Phys. Rev. Lett. 95 147003
[26] Schneider T and Locquet J P 1991 Phys. C:Supercond. 179 125
[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
[28] Zhao L, Jin Y R, Li J, Deng H and Zheng D N 2014 Chin. Phys. B 23 087402
[29] Broussard P 2017 J. Low Temp. Phys. 189 108
[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
[31] Sharma C H, Surendran A P, Varma S S and Thalakulam M 2018 Commun. Phys. 1 90
[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
[34] Ashkin M and Gavaler J R 1978 J. Appl. Phys. 49 2449
[35] Ashkin M, Gavaler J R, Greggi J and Decroux M 1984 J. Appl. Phys. 55 1044
[36] Cirillo C, Prischepa S L, Salvato M, Attanasio C, Hesselberth M and Aarts J 2005 Phys. Rev. B 72 144511
[37] Takezawa N, Koyama T and Tachiki M 1993 Physica C 207 231
[38] Cooley L D and Hawes C D 1999 J. Appl. Phys. 86 5696
[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
[1] Different behavior of upper critical field in Fe1-xSe single crystals
Shunli Ni(倪顺利), Wei Hu(胡卫), Peipei Shen(沈沛沛), Zhongxu Wei(魏忠旭), Shaobo Liu(刘少博), Dong Li(李栋), Jie Yuan(袁洁), Li Yu(俞理), Kui Jin(金魁), Fang Zhou(周放), Xiaoli Dong(董晓莉), Zhongxian Zhao(赵忠贤). Chin. Phys. B, 2019, 28(12): 127401.
[2] Superconductivity with peculiar upper critical fields in quasi-one-dimensional Cr-based pnictides
Guang-Han Cao(曹光旱), Zeng-Wei Zhu(朱增伟). Chin. Phys. B, 2018, 27(10): 107401.
[3] Synthesis of large FeSe superconductor crystals via ion release/introduction and property characterization
Dongna Yuan(苑冬娜), Yulong Huang(黄裕龙), Shunli Ni(倪顺利), Huaxue Zhou(周花雪), Yiyuan Mao(毛义元), Wei Hu(胡卫), Jie Yuan(袁洁), Kui Jin(金魁), Guangming Zhang(张广铭), Xiaoli Dong(董晓莉), Fang Zhou(周放). Chin. Phys. B, 2016, 25(7): 077404.
[4] The upper critical field in two-band layered superconductors
Liu Min-Xia, Gan Zi-Zhao. Chin. Phys. B, 2007, 16(3): 826-833.
[5] Anisotropy of the upper critical field in c-axis oriented MgB2 thin films
Liu Zhen, Zhu Ya-Bin, Zhou Yue-Liang, Chen Zheng-Hao, Lü Hui-Bin, Yang Guo-Zhen, Wang Shu-Fang. Chin. Phys. B, 2004, 13(7): 1120-1123.
No Suggested Reading articles found!