Shadow bands in single-layered Bi2Sr2CuO6+delta studied by angle-resolved photoemission spectroscopy

We have performed systematic angle-resolved photoemission spectroscopy (ARPES) on single-layered cuprate superconductor Bi2Sr2CuO6 to elucidate the origin of shadow band. We found that the shadow band is exactly the c(2x2) replica of the main band irrespective of the carrier concentration and its intensity is invariable with respect to temperature, doping, and substitution constituents of block layers. This result rules out the possibility of antiferromagnetic correlation and supports the structural origin of shadow band. ARPES experiments on optimally doped La1.85Sr0.15CuO4 also clarified the existence of the c(2x2) shadow band, demonstrating that the shadow band is not a unique feature of Bi-based cuprates. We conclude that the shadow band is related to the orthorhombic distortion at the crystal surface.

[1]  M. Lindroos,et al.  Experimental proof of a structural origin for the shadow fermi surface of Bi2Sr2CaCu2O8+delta. , 2006, Physical review letters.

[2]  T. Kondo,et al.  Two- to three-dimensional crossover in the electronic structure of (Bi, Pb)2(Sr, La)2CuO(6+delta) from angle-resolved photoemission spectroscopy. , 2005, Physical review letters.

[3]  Takahiko Sasaki,et al.  Hole-doping and magnetic-field effects on the pseudogap in Bi1.74Pb0.38Sr1.88CuO6+δ studied by the out-of-plane resistivity , 2005 .

[4]  J. Avila,et al.  Effects of the doping and the number of planes on the shadow bands of Bi-based cuprates , 2005 .

[5]  Shik Shin,et al.  Contribution of electronic structure to thermoelectric power in(Bi,Pb)2(Sr,La)2CuO6+δ , 2005 .

[6]  K. Hirota,et al.  Zn and Ni doping effects on the low-energy spin excitations inLa1.85Sr0.15CuO4 , 2004, cond-mat/0409747.

[7]  Shik Shin,et al.  Hole-concentration dependence of band structure in (Bi,Pb)2(Sr,La)2CuO6+δ determined by the angle-resolved photoemission spectroscopy , 2004 .

[8]  Z. Hussain,et al.  Dichotomy between nodal and antinodal quasiparticles in underdoped (La2-xSrx)CuO4 superconductors. , 2004, Physical review letters.

[9]  A. Damascelli,et al.  Effect of chemical inhomogeneity in bismuth-based copper oxide superconductors , 2003, cond-mat/0312570.

[10]  P. Blaha,et al.  Origin of photoemission final-state effects in Bi 2 Sr 2 CaCu 2 O 8 by very-low-energy electron diffraction , 2002, cond-mat/0210203.

[11]  M. Takano,et al.  Evidence for a hole-like Fermi surface of Bi2Sr2CuO6 from temperature-dependent angle-resolved photoemission spectroscopy , 2001 .

[12]  A. Damascelli,et al.  Bilayer splitting in the electronic structure of heavily overdoped Bi(2)Sr(2)CaCu(2)O(8+delta). , 2001, Physical review letters.

[13]  J. M. Singer,et al.  Doping-dependent electronic structure of cuprates studied using angle-scanned photoemission , 2000 .

[14]  Changyoung Kim,et al.  Doping-dependent Evolution of the Electronic Structure of La2-xSrxCuO4 in the Superconducting and Metallic Phases , 2000, cond-mat/0005370.

[15]  M. Lindroos,et al.  Importance of Matrix Elements in the ARPES Spectra of BISCO , 1999, cond-mat/9910496.

[16]  G. Margaritondo,et al.  Shadow bands in overdoped Bi2Sr2CaCu2O8+x , 1997 .

[17]  K. Kadowaki,et al.  Crystallinity improvement of Bi2Sr2CaCu2O8+δ single crystal by TSFZ method , 1997 .

[18]  Y. M. Vilk.  SHADOW FEATURES AND SHADOW BANDS IN THE PARAMAGNETIC STATE OF CUPRATE SUPERCONDUCTORS , 1996, cond-mat/9605189.

[19]  Haas,et al.  Antiferromagnetically induced photoemission band in the cuprates. , 1995, Physical review letters.

[20]  Langer,et al.  Theory for the excitation spectrum of high-Tc superconductors: quasiparticle dispersion and shadows of the Fermi surface. , 1995, Physical review letters.

[21]  Chubukov.  Quasiparticle spectrum in a nearly antiferromagnetic Fermi liquid: Shadow and flat bands. , 1995, Physical review. B, Condensed matter.

[22]  Chakravarty.  Comment on "Complete Fermi surface mapping of Bi2Sr2CaCu2O8+x(001): Coexistence of short range antiferromagnetic correlations and metallicity in the same phase" , 1995, Physical review letters.

[23]  Pickett,et al.  Structural modifications in bismuth cuprates: Effects on the electronic structure and Fermi surface. , 1995, Physical review. B, Condensed matter.

[24]  Shimoda,et al.  Complete Fermi surface mapping of Bi2Sr2CaCu2O8+x(001): Coexistence of short range antiferromagnetic correlations and metallicity in the same phase. , 1994, Physical review letters.

[25]  Huang,et al.  Lattice instabilities and the effect of copper-oxygen-sheet distortions on superconductivity in doped La2CuO4. , 1991, Physical review. B, Condensed matter.

[26]  Kampf,et al.  Spectral function and photoemission spectra in antiferromagnetically correlated metals. , 1990, Physical review. B, Condensed matter.

[27]  Asano,et al.  Rietveld analysis of the modulated structure in the superconducting oxide Bi2(Sr,Ca)3Cu2O8+x. , 1990, Physical review. B, Condensed matter.

[28]  M. Knupfer,et al.  UvA-DARE ( Digital Academic Repository ) Origin of the shadow Fermi surface in Bi-based cuprates , 2004 .