Mass-renormalized electronic excitations at (π,0) in the superconducting state of Bi2Sr2CaCu2O8+δ -: art. no. 174520

被引：132

作者：

Gromko, AD ^{[1
]}

Fedorov, AV

Chuang, YD

Koralek, JD

Aiura, Y

Yamaguchi, Y

Oka, K

Ando, Y

Dessau, DS

机构：

[1] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

[3] Natl Inst Adv Ind Sci & Technol, AIST Tsukuba Cent 2, Tsukuba, Ibaraki 3058568, Japan

[4] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.68.174520

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using high-resolution angle-resolved photoemission spectroscopy on Bi2Sr2CaCu2O8+delta, we observe a new mass renormalization or "kink" in the E vs k dispersion relations localized near (pi,0). The resolution of bilayer splitting allowed the first direct measurements of this interaction effect. The kink is clearly stronger than the kink observed along the nodal direction, appears at a lower energy (near 40 meV for overdoped samples), and is only apparent in the superconducting state. The kink energy scale defines a cutoff below which well-defined quasiparticle excitations occur. The most likely origin of this effect is coupling to the magnetic-resonance mode observed in inelastic neutron scattering.

引用

页数：7

共 35 条

[1] Fingerprints of spin mediated pairing in cuprates [J].

Abanov, A ;

Chubukov, AV ;

Schmalian, J .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2001, 117 :129-151

[2]

ANDERSON PW, 1997, PRINCETON SERIES PHY

[3] Evidence for an energy scale for quasiparticle dispersion in Bi2Sr2CaCu2O8 [J].

Bogdanov, PV ;

Lanzara, A ;

Kellar, SA ;

Zhou, XJ ;

Lu, ED ;

Zheng, WJ ;

Gu, G ;

Shimoyama, JI ;

Kishio, K ;

Ikeda, H ;

Yoshizaki, R ;

Hussain, Z ;

Shen, ZX .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2581-2584

[4] Anomalous enhancement of the coupling to the magnetic resonance mode in underdoped Pb-Bi2212 [J].

Borisenko, SV ;

Kordyuk, AA ;

Kim, TK ;

Koitzsch, A ;

Knupfer, M ;

Fink, J ;

Golden, MS ;

Eschrig, M ;

Berger, H ;

Follath, R .

PHYSICAL REVIEW LETTERS, 2003, 90 (20) :4

[5] Superconducting gap in the presence of bilayer splitting in underdoped (Pb,Bi)2Sr2CaCu2O8+δ -: art. no. 140509 [J].

Borisenko, SV ;

Kordyuk, AA ;

Kim, TK ;

Legner, S ;

Nenkov, KA ;

Knupfer, M ;

Golden, MS ;

Fink, J ;

Berger, H ;

Follath, R .

PHYSICAL REVIEW B, 2002, 66 (14) :1-4

[6]

Bourges P., 1998, GAP SYMMETRY FLUCTUA

[7] Electronic spectra and their relation to the (π,π) collective mode in high-Tc superconductors [J].

Campuzano, JC ;

Ding, H ;

Norman, MR ;

Fretwell, HM ;

Randeria, M ;

Kaminski, A ;

Mesot, J ;

Takeuchi, T ;

Sato, T ;

Yokoya, T ;

Takahashi, T ;

Mochiku, T ;

Kadowaki, K ;

Guptasarma, P ;

Hinks, DG ;

Konstantinovic, Z ;

Li, ZZ ;

Raffy, H .

PHYSICAL REVIEW LETTERS, 1999, 83 (18) :3709-3712

[8] Doubling of the bands in overdoped Bi2Sr2CaCu2O8+δ:: Evidence for c-axis bilayer coupling -: art. no. 117002 [J].

Chuang, YD ;

Gromko, AD ;

Fedorov, A ;

Aiura, Y ;

Oka, K ;

Ando, Y ;

Eisaki, H ;

Uchida, SI ;

Dessau, DS .

PHYSICAL REVIEW LETTERS, 2001, 87 (11) :117002-1

[9]

CHUANG YD, CONDMAT0107002

[10] The magnetic excitation spectrum and thermodynamics of high-Tc superconductors [J].

Dai, PC ;

Mook, HA ;

Hayden, SM ;

Aeppli, G ;

Perring, TG ;

Hunt, RD ;

Dogan, F .

SCIENCE, 1999, 284 (5418) :1344-1347

← 1 2 3 4 →