Circular dichroism and bilayer splitting in the normal state of underdoped (Pb,Bi)2Sr2(CaxY1-x)Cu2O8+δ and overdoped (Pb,Bi)2Sr2CaCu2O8+δ -: art. no. 224509

被引：15

作者：

Borisenko, SV

Kordyuk, AA

Legner, S

Kim, TK

Knupfer, M

Schneider, CM

Fink, J

Golden, MS

Sing, M

Claessen, R

Yaresko, A

Berger, H

Grazioli, C

Turchini, S

机构：

[1] IFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany

[2] Natl Acad Sci Ukraine, Inst Met Phys, UA-03142 Kiev, Ukraine

[3] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

[4] Univ Augsburg, D-86135 Augsburg, Germany

[5] Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany

[6] Ecole Polytech Fed Lausanne, Inst Phys Mat Complex, CH-1015 Lausanne, Switzerland

[7] CNR, Ist Struttura Mat, I-34012 Trieste, Italy

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.69.224509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report an ARPES investigation of the circular dichroism in the first Brillouin zone (BZ) of under- and overdoped Pb-Bi2212 samples. We show that the dichroism has opposite signs for bonding and antibonding components of the bilayer-split CuO-band and is antisymmetric with respect to reflections in both mirror planes parallel to the c-axis. Using this property of the energy and momentum intensity distributions we prove the existence of the bilayer splitting in the normal state of the underdoped compound and compare its value with the splitting in overdoped sample. In agreement with previous studies the magnitude of the interlayer coupling does not depend significantly on doping. We also discuss possible origins of the observed dichroism.

引用

页码：224509 / 1

页数：5

共 22 条

[1] LDA energy bands, low-energy Hamiltonians, t', t'', t perpendicular to(k), and J perpendicular to. [J].