Doping dependence of the pseudogap in La2-xSrxCuO4

被引：73

作者：

Naeini, JG

Chen, XK

Irwin, JC

Okuya, M ^{[1
]}

Kimura, T

Kishio, K

机构：

[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[2] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 113, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.59.9642

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of Raman scattering experiments on single crystals of La2-xSrxCuO4 that span the range from underdoped (x=0.10) to overdoped (x=0.22). The spectra are consistent with the existence of a strong anisotropic quasiparticle interaction that results in a normal state depletion of spectral weight from regions of the Fermi surface located near the zone axes. The strength of the interaction decreases rapidly with increasing hole concentration and the spectral evidence for the pseudogap vanishes when the optimum doping level is reached. The results suggest that the pseudogap and superconducting gap arise from different mechanisms. [S0163-1829(99)09913-0].

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页码：9642 / 9648

页数：7

相关论文

共 60 条

[1]

ALLEN PB, 1989, PHYSICAL PROPERTIES, V1

[2] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[3] MAGNETIC SCALING IN CUPRATE SUPERCONDUCTORS [J].

BARZYKIN, V ;

PINES, D .

PHYSICAL REVIEW B, 1995, 52 (18) :13585-13600

[4] NORMAL-STATE PHASE-DIAGRAM OF (LA,SR)(2)CUO4 FROM CHARGE AND SPIN DYNAMICS [J].

BATLOGG, B ;

HWANG, HY ;

TAKAGI, H ;

CAVA, RJ ;

KAO, HL ;

KWO, J .

PHYSICA C, 1994, 235 :130-133

[5] Evolution of magnetic and superconducting fluctuations with doping of high-T-c superconductors [J].

Blumberg, G ;

Kang, MS ;

Klein, MV ;

Kadowaki, K ;

Kendziora, C .

SCIENCE, 1997, 278 (5342) :1427-1432

[6] Resonant two-magnon Raman scattering in cuprate antiferromagnetic insulators [J].

Blumberg, G ;

Abbamonte, P ;

Klein, MV ;

Lee, WC ;

Ginsberg, DM ;

Miller, LL ;

Zibold, A .

PHYSICAL REVIEW B, 1996, 53 (18) :11930-11933

[7] OPTICAL MEASUREMENTS ON ORIENTED THIN YBA2CU3O7-DELTA FILMS - LACK OF EVIDENCE FOR EXCITONIC SUPERCONDUCTIVITY [J].

BOZOVIC, I ;

KIRILLOV, D ;

KAPITULNIK, A ;

CHAR, K ;

HAHN, MR ;

BEASLEY, MR ;

GEBALLE, TH ;

KIM, YH ;

HEEGER, AJ .

PHYSICAL REVIEW LETTERS, 1987, 59 (19) :2219-2221

[8] LOW-ENERGY RAMAN CONTINUA OF YBA2CU3OX TIGHT-BINDING MODEL IMPLICATIONS [J].

CHEN, XK ;

IRWIN, JC ;

LIANG, R ;

HARDY, WN .

PHYSICA C, 1994, 227 (1-2) :113-119

[9] Electronic Raman scattering in underdoped YBa2CU3O6.5 [J].

Chen, XK ;

Naeini, JG ;

Hewitt, KC ;

Irwin, JC ;

Liang, R ;

Hardy, WN .

PHYSICAL REVIEW B, 1997, 56 (02) :R513-R516

[10] OXYGEN-CONCENTRATION DEPENDENCE OF THE RAMAN CONTINUA IN YBA2CU3OY SINGLE-CRYSTALS [J].

CHEN, XK ;

ALTENDORF, E ;

IRWIN, JC ;

LIANG, R ;

HARDY, WN .

PHYSICAL REVIEW B, 1993, 48 (14) :10530-10536

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