Tunneling spectra of underdoped Bi2Sr2Ca1-xYxCu2O8+$\delta$ intrinsic Josephson junctions

doi:10.1088/1674-1056/19/8/087402

Abstract Mesa-structured submicron intrinsic Josephson junctions are successfully fabricated and well characterized on underdoped Bi₂Sr₂Ca_1-xY_xCu₂O_8+$\delta$single crystals with a T_c of 80 K. Tunneling spectra at the temperatures ranging from 4.2 K to 295 K are measured. A pulse technique is used to reduce sample heating for the measurement near pseudogap opening temperature T^*～280 K. Our experimental results show that the superconducting gap, the peakdip separation, and the pseudogap opening temperature are all increased as compared with those from near optimally doped samples, which requires further theoretical analysis in the future.

Keywords: underdoped Bi₂Sr₂Ca_1-xY_xCu₂O_8+$\delta$ superconductors intrinsic Josephson junctions tunneling spectra

Received: 22 February 2010
Revised: 07 April 2010
Accepted manuscript online:

PACS:	74.50.+r	(Tunneling phenomena; Josephson effects)
	74.25.Jb	(Electronic structure (photoemission, etc.))
	74.62.Bf	(Effects of material synthesis, crystal structure, and chemical composition)
	74.62.Dh	(Effects of crystal defects, doping and substitution)
	74.72.Hs

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974242).

Cite this article:

Yuan Tao(袁涛), Wang Xin-Qiang(王新强), Ren Jian-Kun(任建坤), Lin De-Hua(林德华), Tian Ye(田野), Ren Yu-Feng(任育峰), and Zhao Shi-Ping(赵士平) Tunneling spectra of underdoped Bi₂Sr₂Ca_1-xY_xCu₂O_8+$\delta$ intrinsic Josephson junctions 2010 Chin. Phys. B 19 087402

[1]	Timusk T and Statt B 1999 Rep. Prog. Phys. 62 61
[2]	Lee P A, Nagaosa N and Wen X G 2006 Rev. Mod. Phys. 78 17
[3]	Damascelli A, Hussain Z and Shen Z X 2003 Rev. Mod. Phys. 75 473
[4]	Basov D N and Timusk T 2005 Rev. Mod. Phys. bf 77 721
[5]	Fischer phi, Kugler M, Maggio-Aprile I, Berthod C and Renner C 2007 Rev. Mod. Phys. 79 353
[6]	Schrieffer J R 1964 Theory of Superconductivity (New York: Benjamin)
[7]	Wolf E L 1985 Principles of Electron Tunneling Spectroscopy (New York: Oxford University Press)
[8]	Miyakawa N, Guptasarma P, Zasadzinski J F, Hinks D G and Gray K E 1998 Phys. Rev. Lett. 80 157
[9]	Zasadzinski J F, Ozyuzer L, Coffey L, Gray K E, Hinks D G and Kendziora C 2006 Phys. Rev. Lett. 96 017004
[10]	Krasnov V M, Yurgens A, Winkler D, Delsing P and Claseson T 2000 Phys. Rev. Lett. 84 5860
[11]	Suzuki M and Watanabe T 2000 Phys. Rev. Lett. 85 4787
[12]	Zhu X B, Wei Y F, Zhao S P, Chen G H, Yang H F, Jin A Z and Gu C Z 2006 Phys. Rev. B 73 224501
[13]	Li S X, Qiu W, Han S Y, Wei Y F, Zhu X B, Gu C Z, Zhao S P and Wang H B 2007 Phys. Rev. Lett. 99 037002
[14]	Zhao S P, Zhu X B and Wei Y F 2007 arXiv:cond-mat/0703177v2
[15]	Zhao S P, Zhu X B and Tang H 2009 Eur. Phys. J. B 71 195
[16]	Kleiner R, Steinmeyer F, Kunkel G and M"uller P 1992 Phys. Rev. Lett. 68 2934
[17]	Kleiner R and M"uller P 1994 Phys. Rev. B 49 1327
[18]	Krasnov V M, Yurgens A, Winkler D and Delsing P 2001 J. Appl. Phys. 89 5578
[19]	Norman M R, Randeria M, Ding H and Campuzano J C 1998 Phys. Rev. B 57 R11093
[20]	Kanigel A, Chatterjee U, Randeria M, Norman M R, Souma S, Shi M, Li Z Z, Raffy H and Campuzano J C 2007 Phys. Rev. Lett. 99 157001
[21]	Wang N L, Buschinger B, Geibel C and Steglich F 1996 Phys. Rev. B 54 7445
[22]	Zhu X B, Wei Y F, Zhao S P, Chen G H and Yang Q S 2004 Chin. Phys. 13 529
[23]	Zhao S P, Zhu X B, Wei Y F, Chen G H, Yang Q S and Lin C T 2005 Phys. Rev. B 72 184511
[24]	Cui D J, Lin D H, Yu H F, Peng Z H, Zhu X B, Zheng D N, Jing X N, Lu L and Zhao S P 2008 Acta Phys. Sin. 57 5933 (in Chinese)
[25]	Crommie M F and Zettl A 1990 Phys. Rev. B 41 10978
[26]	Glassbrenner C J and Slack G A 1964 Phys. Rev. 134 A1058
[27]	Anagawa K, Yamada Y, Shibauchi T, Suzuki M and Watanabe T 2003 Appl. Phys. Lett. 83 2381

[1]	Josephson vortices and intrinsic Josephson junctions in the layered iron-based superconductor Ca₁₀(Pt₃As₈)((Fe_0.9Pt_0.1)₂As₂)₅ Qiang-Tao Sui(随强涛) and Xiang-Gang Qui(邱祥冈). Chin. Phys. B, 2022, 31(9): 097403.
[2]	Transition from tunneling regime to local point contact realized on Ba_0.6K_0.4Fe₂As₂ surface Xingyuan Hou(侯兴元), Yunyin Jie(揭云印), Jing Gong(巩靖), Bing Shen(沈冰), Hai Zi(子海), Chunhong Li(李春红), Cong Ren(任聪), Lei Shan(单磊). Chin. Phys. B, 2017, 26(6): 067402.
[3]	Energy gap suppression and excess current in Tl₂Ba₂CaCu₂O₈ intrinsic Josephson junctions Wang Pei (王培), Xie Wei (解伟), Hu Lei (胡磊), Liu Xin (刘欣), Zhao Xin-Jie (赵新杰), He Ming (何明), Ji Lu (季鲁), Zhang Xu (张旭), Yan Shao-Lin (阎少林). Chin. Phys. B, 2013, 22(5): 057402.
[4]	Intrinsic tunneling study of underdoped Bi₂Sr_2-xLa_xCuO_6+δ superconductors Ren Jian-Kun(任建坤), Ren Yu-Feng(任育峰), Tian Ye(田野), Yu Hai-Feng(于海峰), Zheng Dong-Ning(郑东宁), Zhao Shi-Ping(赵士平), and Lin Cheng-Tian(林成天) . Chin. Phys. B, 2011, 20(11): 117401.
[5]	Fiske steps in surface intrinsic Josephson junctions of Bi₂Sr₂CaCu₂O_8+$\delta$ single crystals Zhu Xiao-Bo (朱晓波), Wei Yan-Feng (魏延锋), Zhao Shi-Ping (赵士平), Chen Geng-Hua (陈赓华), Yang Qian-Sheng (杨乾声). Chin. Phys. B, 2004, 13(4): 529-531.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Tunneling spectra of underdoped Bi2Sr2Ca1-xYxCu2O8+$\delta$ intrinsic Josephson junctions

Cite this article:

Online attention

Tunneling spectra of underdoped Bi₂Sr₂Ca_1-xY_xCu₂O_8+$\delta$ intrinsic Josephson junctions