Intrinsic tunneling study of underdoped Bi2Sr2-xLaxCuO6+δ superconductors

doi:10.1088/1674-1056/20/11/117401

Abstract We report on a tunneling study of underdoped submicron Bi₂Sr_2-xLa_xCuO_6+δ (La-Bi2201) intrinsic Josephson junctions (IJJs), whose self-heating is sufficiently suppressed. The tunneling spectra are measured from 4.2 K up to the pseudogap opening temperature of T^* = 260 K. The gap value found from the spectral peak position is about 35 meV and has a weak temperature dependence both below and above the superconducting transition temperature of T_c = 29 K. Since the superconducting gap should have a value of 10-15 meV, our results indicate that the pseudogap (～35 meV) plays an important role in the underdoped La-Bi2201 intrinsic tunneling spectroscopy down to the lowest temperature of 4.2 K. However, the contribution of the superconducting gap can be separated by normalizing the spectra to the one near and above T_c, which shows that the IJJs can be a useful tool for the study of the electronic properties of the La-Bi2201 cuprate superconductors.

Keywords: Bi₂Sr_2-xLa_xCuO_6+δ intrinsic Josephson junctions tunneling spectra superconducting gap pseudogap

Received: 13 June 2011
Revised: 25 August 2011
Accepted manuscript online:

PACS:	74.50.+r	(Tunneling phenomena; Josephson effects)
	74.25.Jb	(Electronic structure (photoemission, etc.))
	74.72.Gh	(Hole-doped)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974242) and the National Basic Research Program of China (Grant No. 2011CBA00106).

Cite this article:

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) Intrinsic tunneling study of underdoped Bi₂Sr_2-xLa_xCuO_6+δ superconductors 2011 Chin. Phys. B 20 117401

[1]	Timusk T and Statt B 1999 Rep. Prog. Phys. bf62 61
[2]	Norman M R, Pines D and Kallin C 2005 Adv. Phys. 54 715
[3]	Meng J Q, Zhang W T, Liu G D, Zhao L, Liu H Y, Jia X W, Lu W, Dong X L, Wang G L, Zhang H B, Zhou Y, Zhu Y, Wang X Y, Zhao Z X, Xu Z Y, Chen C T and Zhou X J 2009 Phys. Rev. B 79 024514
[4]	Nakayama K, Sato T, Sekiba Y, Terashima K, Richard P, Takahashi T, Kudo K, Okumura N, Sasaki T and Kobayashi N 2009 Phys. Rev. Lett. 102 227006
[5]	Kugler M, Fischer phi , Renner C, Ono S and Ando Y 2001 Phys. Rev. Lett. 86 4911
[6]	Boyer M C, Wise W D, Chatterjee K, Yi M, Kondo T, Takeuchi T, Ikuta H and Hudson E W 2007 Nat. Phys. 3 802
[7]	Ma J H, Pan Z H, Niestemski F C, Neupane M, Xu Y M, Richard P, Nakayama K, Sato T, Takahashi T, Luo H Q, Fang L, Wen H H, Wang Z Q, Ding H and Madhavan V 2008 Phys. Rev. Lett. 101 207002
[8]	Hashimoto M, He R H, Tanaka K, Testaud J P, Meevasana W, Moore R G, Lu D H, Yao H, Yoshida Y, Eisaki H, Devereaux T P, Hussain Z and Shen Z X 2010 Nat. Phys. 6 414
[9]	Kondo T, Takeuchi T, Kaminski A, Tsuda S and Shin S 2007 Phys. Rev. Lett. 98 267004
[10]	Kondo T, Khasanov R, Takeuchi T, Schmalian J and Kaminski A 2009 Nature 457 296
[11]	Kleiner R, Steinmeyer F, Kunkel G and Müller P 1992 Phys. Rev. Lett. 68 2394
[12]	Yurgens A, Winkler D, Claeson T, Hwang S J and Choy J H 1999 Int. J. Mod. Phys. B 13 3758
[13]	Suzuki M, Watanabe T and Matsuda A 1999 Phys. Rev. Lett. 82 5361
[14]	Anagawa K, Yamada Y, Shibauchi T, Suzuki M and Watanabe T 2003 Appl. Phys. Lett. 83 2381
[15]	Krasnov V M, Sandberg M and Zogaj I 2005 Phys. Rev. Lett. 94 077003
[16]	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
[17]	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
[18]	Zhao S P, Zhu X B and Tang H 2009 Eur. Phys. J. B 71 195
[19]	Kurter C, Ozyuzer L, Proslier T, Zasadzinski J F, Hinks D G and Gray K E 2010 Phys. Rev. B 81 224518
[20]	Yurgens A, Winkler D, Claeson T, Ono S and Ando Y 2003 Phys. Rev. Lett. 90 147005
[21]	Zavaritsky V N 2004 Phys. Rev. Lett. 92 259701
[22]	Yurgens A, Winkler D, Claeson T, Ono S and Ando Y 2004 Phys. Rev. Lett. 92 259702
[23]	Kondo T, Hamaya Y, Palczewski A D, Takeuchi T, Wen J S, Xu Z J, Gu G D, Schmalian J and Kaminski A 2011 Nat. Phys. 7 21
[24]	Zheng G Q, Kuhns P L, Reyes A P, Liang B and Lin C T 2005 Phys. Rev. Lett. 94 047006
[25]	Ono S and Ando Y 2003 Phys. Rev. B 67 104512
[26]	Ando Y, Hanaki Y, Ono S, Murayama T, Segawa K, Miyamoto N and Komiya S 2000 Phys. Rev. B 61 14956
[27]	Wen H H, Mu G, Luo H Q, Yang H, Shan L, Ren C, Cheng P, Yan J and Fang L 2009 Phys. Rev. Lett. 103 067002
[28]	Liu Y H, Toda Y, Shimatake K, Momono N, Oda M and Ido M 2008 Phys. Rev. Lett. 101 137003
[29]	McMillan W L and Rowell J M 1969 it Superconductivity (edited by Parks R D) (New York: Marcel Dekker)
[30]	Zasadzinski J F, Ozyuzer L, Coffey L, Gray K E, Hinks D G and Kendziora C 2006 Phys. Rev. Lett. 96 017004

[1]	Conservation of the particle-hole symmetry in the pseudogap state in optimally-doped Bi₂Sr₂CuO_6+δ superconductor Hongtao Yan(闫宏涛), Qiang Gao(高强), Chunyao Song(宋春尧), Chaohui Yin(殷超辉), Yiwen Chen(陈逸雯), Fengfeng Zhang(张丰丰), Feng Yang(杨峰), Shenjin Zhang(张申金), Qinjun Peng(彭钦军), Guodong Liu(刘国东), Lin Zhao(赵林), Zuyan Xu(许祖彦), and X. J. Zhou(周兴江). Chin. Phys. B, 2022, 31(8): 087401.
[2]	Experimental observation of pseudogap in a modulation-doped Mott insulator: Sn/Si(111)-(√30×√30)R30° Yan-Ling Xiong(熊艳翎), Jia-Qi Guan(关佳其), Rui-Feng Wang(汪瑞峰), Can-Li Song(宋灿立), Xu-Cun Ma(马旭村), and Qi-Kun Xue(薛其坤). Chin. Phys. B, 2022, 31(6): 067401.
[3]	A short review of the recent progresses in the study of the cuprate superconductivity Tao Li(李涛). Chin. Phys. B, 2021, 30(10): 100508.
[4]	Josephson effect in the strontium titanate/lanthanum aluminate junction Xing Yang(阳星), Jie Chen(陈杰), Yabin Yu(余亚斌), Quanhui Liu(刘全慧). Chin. Phys. B, 2019, 28(9): 097401.
[5]	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.
[6]	Field-dependent resistive transitions in Yba₂Cu₃O_7-δ thin films: Influence of the pseudogap on vortex dynamics S H Naqib, R S Islam. Chin. Phys. B, 2015, 24(1): 017402.
[7]	Tunneling spectra of underdoped Bi₂Sr₂Ca_1-xY_xCu₂O_8+$\delta$ intrinsic Josephson junctions 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). Chin. Phys. B, 2010, 19(8): 087402.
[8]	Crossover from a pseudogap state to a superconducting state Cao Tian-De(曹天德). Chin. Phys. B, 2010, 19(11): 117401.
[9]	Single-particle spectral function of the Hubbard chain: frustration induced Wang Jing(王竞) and Enrico Arrigoni. Chin. Phys. B, 2009, 18(6): 2475-2480.
[10]	Theoretical study of enhancement and suppression of the fluorescent spectra of dye molecules in a photonic crystal with a pseudogap Liu Xiao-Dong (刘晓东), Xu Xing-Sheng (许兴胜), Wang Yi-Quan (王义全), Zhang Dao-Zhong (张道中), Cheng Bing-Ying (程丙英). Chin. Phys. B, 2003, 12(9): 992-996.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Intrinsic tunneling study of underdoped Bi2Sr2-xLaxCuO6+δ superconductors

Cite this article:

Online attention

Intrinsic tunneling study of underdoped Bi₂Sr_2-xLa_xCuO_6+δ superconductors