Stripe structure in the CuO2 plane of perovskite superconductors

被引：175

作者：

Bianconi, A

Saini, NL

Rossetti, T

Lanzara, A

Perali, A

Missori, M

Oyanagi, H

Yamaguchi, H

Nishihara, Y

Ha, DH

机构：

[1] ELECTROTECH LAB, TSUKUBA, IBARAKI 305, JAPAN

[2] KOREA RES INST STAND & SCI, TAEJON 305606, SOUTH KOREA

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.54.12018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Cu-O pair-distribution function in a Bi2Sr2CaCu2O8-y superconductor has been measured by polarized Cu K-edge extended X-ray-absorption fine structure at T<T-c. The results show an anomalous long Cu-O (planar) distance, 1.96 Angstrom, assigned to distorted CuO2 stripes of width W intercalated with undistorted stripes of width L. From the measurement of L=15+/-0.5 Angstrom we have calculated the energies E(n) of the bottom of the one-dimensional subbands of the superlattice and found that the Fermi level E(F) is tuned to a ''shape resonance'' E(F)-E(n)<h omega(D), where omega(D) is the Debye frequency, giving the T-c amplification.

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页码：12018 / 12021

页数：4

相关论文

共 38 条

[1] NEUTRON-DIFFRACTION STUDY OF THE MODULATED STRUCTURE OF BI2(SR, CA)3CU2O8+Y [J].

BESKROVNYI, AI ;

DLOUHA, M ;

JIRAK, Z ;

VRATISLAV, S ;

POLLERT, E .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1990, 166 (1-2) :79-86

[2] STUDY OF THE MODULATED STRUCTURE OF BI2(SR, CA)3CU2O8+GAMMA IN THE RANGE 8-K-920-K [J].

BESKROVNYI, AI ;

DLOUHA, M ;

JIRAK, Z ;

VRATISLAV, S .

PHYSICA C, 1990, 171 (1-2) :19-24

[3] ON THE POSSIBILITY OF NEW HIGH-TC SUPERCONDUCTORS BY PRODUCING METAL HETEROSTRUCTURES AS IN THE CUPRATE PEROVSKITES [J].

BIANCONI, A .

SOLID STATE COMMUNICATIONS, 1994, 89 (11) :933-936

[4] Stripe structure of the CuO2 plane in Bi2Sr2CaCu2O8+y by anomalous x-ray diffraction [J].

Bianconi, A ;

Lusignoli, M ;

Saini, NL ;

Bordet, P ;

Kvick, A ;

Radaelli, PG .

PHYSICAL REVIEW B, 1996, 54 (06) :4310-4314

[5] Determination of the local lattice distortions in the CuO2 plane of La1.85Sr0.15CuO4 [J].

Bianconi, A ;

Saini, NL ;

Lanzara, A ;

Missori, M ;

Rossetti, T ;

Oyanagi, H ;

Yamaguchi, H ;

Oka, K ;

Ito, T .

PHYSICAL REVIEW LETTERS, 1996, 76 (18) :3412-3415

[6]

Bianconi A., 1990, International Conference on Superconductivity - ICSC, P448

[7] HIGH CRITICAL-TEMPERATURE IN A SUPERLATTICE OF QUANTUM WIRES [J].

BIANCONI, A ;

MISSORI, M ;

SAINI, NL ;

OYANAGI, H ;

YAMAGUCHI, H ;

HA, DH ;

NISHIHARA, Y .

JOURNAL OF SUPERCONDUCTIVITY, 1995, 8 (05) :545-548

[8] THE MEASUREMENT OF THE POLARON SIZE IN THE METALLIC PHASE OF CUPRATE SUPERCONDUCTORS [J].

BIANCONI, A ;

MISSORI, M ;

OYANAGI, H ;

YAMAGUCHI, H ;

HA, DH ;

NISHIARA, Y ;

DELLALONGA, S .

EUROPHYSICS LETTERS, 1995, 31 (07) :411-415

[9] THE INSTABILITY CLOSE TO THE 2D GENERALIZED WIGNER POLARON CRYSTAL DENSITY - A POSSIBLE PAIRING MECHANISM INDICATED BY A KEY EXPERIMENT [J].

BIANCONI, A .

PHYSICA C, 1994, 235 :269-272

[10]

BIANCONI A, 1994, J PHYS I, V4, P361, DOI 10.1051/jp1:1994100

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