Evolution of interlayer tunneling spectra and superfluid density with doping in Bi2Sr2CaCu2O8+δ

被引：23

作者：

Suzuki, Minoru ^{[1
,2
]}

Hamatani, Takashi ^{[1
]}

Anagawa, Kenkichi ^{[1
]}

Watanabe, Takao ^{[3
]}

机构：

[1] Kyoto Univ, Dept Elect Sci & Engn, Kyoto 6158510, Japan

[2] Kyoto Univ, Photon & Elect Sci & Engn Ctr, Kyoto 6158510, Japan

[3] Hirosaki Univ, Dept Adv Phys, Aomori 0368561, Japan

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 21期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; INTRINSIC JOSEPHSON-JUNCTIONS; T-C SUPERCONDUCTORS; PENETRATION-DEPTH MEASUREMENTS; NORMAL-STATE PROPERTIES; MUON SPIN ROTATION; GRAIN-BOUNDARIES; SINGLE-CRYSTALS; OVERDOPED BI2SR2CACU2O8+DELTA; CUPRATE SUPERCONDUCTORS;

D O I：

10.1103/PhysRevB.85.214529

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Interlayer tunneling spectra, the Josephson critical current density J(c), and the normal tunneling resistance have been measured simultaneously for intrinsic Josephson junctions in Bi2Sr2CaCu2O8+delta over a wide range of doping using a small mesa structure and a short-pulse technique. It is found that J(c) decreases by nearly two orders of magnitude in the underdoped region. Experimental J(c) is found to show a significant deviation from the theoretical estimates. In order to interpret the result, we propose a model in which the superconducting order parameter is inhomogeneous in k space rather than in real space. Based on this model, quasiparticle current-voltage characteristics are calculated, giving a qualitative agreement with the experiment.

引用

页数：10

共 59 条

[31] Relating atomic-scale electronic phenomena to wave-like quasiparticle states in superconducting Bi2Sr2CaCu2O8+δ [J].

McElroy, K ;

Simmonds, RW ;

Hoffman, JE ;

Lee, DH ;

Orenstein, J ;

Eisaki, H ;

Uchida, S ;

Davis, JC .

NATURE, 2003, 422 (6932) :592-596

[32] On the correct formula for the lifetime broadened superconducting density of states [J].

Mitrovic, Bozidar ;

Rozema, Lee A. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (01)

[33] Common phase diagram for antiferromagnetism in La2-xSrxCuO4 and Y1-xCaxBa2Cu3O6 as seen by muon spin rotation [J].

Niedermayer, C ;

Bernhard, C ;

Blasius, T ;

Golnik, A ;

Moodenbaugh, A ;

Budnick, JI .

PHYSICAL REVIEW LETTERS, 1998, 80 (17) :3843-3846

[34] Modeling the Fermi arc in underdoped cuprates [J].

Norman, M. R. ;

Kanigel, A. ;

Randeria, M. ;

Chatterjee, U. ;

Campuzano, J. C. .

PHYSICAL REVIEW B, 2007, 76 (17)

[35] Destruction of the Fermi surface underdoped high-Tc superconductors [J].

Norman, MR ;

Ding, H ;

Randeria, M ;

Campuzano, JC ;

Yokoya, T ;

Takeuchi, T ;

Takahashi, T ;

Mochiku, T ;

Kadowaki, K ;

Guptasarma, P ;

Hinks, DG .

NATURE, 1998, 392 (6672) :157-160

[36] Quasiparticle and Josephson tunneling of overdoped Bi2Sr2CaCu2O8+δ single crystals [J].

Ozyuzer, L ;

Zasadzinski, JF ;

Kendziora, C ;

Gray, KE .

PHYSICAL REVIEW B, 2000, 61 (05) :3629-3640

[37] Effects of Zn doping on the anisotropic penetration depth of YBa2Cu3O7 [J].

Panagopoulos, C ;

Cooper, JR ;

Athanassopoulou, N ;

Chrosch, J .

PHYSICAL REVIEW B, 1996, 54 (18) :12721-12724

[38] Probing the order parameter and the c-axis coupling of high-T-c cuprates by penetration depth measurements [J].

Panagopoulos, C ;

Cooper, JR ;

Xiang, T ;

Peacock, GB ;

Gameson, I ;

Edwards, PP .

PHYSICAL REVIEW LETTERS, 1997, 79 (12) :2320-2323

[39] Effects of carrier concentration on the superfluid density of high-Tc cuprates [J].

Panagopoulos, C ;

Rainford, BD ;

Cooper, JR ;

Lo, W ;

Tallon, JL ;

Loram, JW ;

Betouras, J ;

Wang, YS ;

Chu, CW .

PHYSICAL REVIEW B, 1999, 60 (21) :14617-14620

[40] Absolute values of the London penetration depth in YBa2Cu3O6+y measured by zero field ESR spectroscopy on Gd doped single crystals -: art. no. 184513 [J].

Pereg-Barnea, T ;

Turner, PJ ;

Harris, R ;

Mullins, GK ;

Bobowski, JS ;

Raudsepp, M ;

Liang, RX ;

Bonn, DA ;

Hardy, WN .

PHYSICAL REVIEW B, 2004, 69 (18) :184513-1

← 1 2 3 4 5 6 →