Effects of Pb doping on structural and electronic properties of Bi2Sr2Ca2Cu3O10
| Autor: | Rafael Baquero, J. A. Camargo-Martínez |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics 010308 nuclear & particles physics Photoemission spectroscopy Fermi level FOS: Physical sciences Energy Engineering and Power Technology Angle-resolved photoemission spectroscopy Fermi surface Electronic structure Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Brillouin zone Condensed Matter - Strongly Correlated Electrons symbols.namesake Condensed Matter::Superconductivity 0103 physical sciences symbols Condensed Matter::Strongly Correlated Electrons Density functional theory Electrical and Electronic Engineering 010306 general physics Electronic band structure |
| Zdroj: | Physica C: Superconductivity and its Applications. :22-28 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2015.12.006 |
| Popis: | Pb doping effect in the Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10}$ compound (Bi2223) on the structural and electronic properties were investigated, using the Local Density (LDA) and Virtual Crystal (VCA) approximations within the framework of the Density Functional Theory (DFT), taking as reference the procedure implemented by H.Lin {\it et al.} in the Bi2212 compound [{\it Phys. Rev. Lett.} {\bf 96} (2006) 097001]. Results show that, the incorporation of Pb-dopant in Bi2223 lead a rigid displacement of the Bi/Pb-O bands toward higher energies, with a null contribution at the Fermi level, around the high symmetry point $\overline{\text{M}}$ in the irreducible Brillouin zone, for Pb doping concentration equal to or more than 26\%, avoiding the presence of the so-called Bi-O {\it pockets} in the Fermi surface, in good agreement with angle-resolved photoemission spectroscopy (ARPES) and nuclear magnetic resonance (NMR) experiments, although a slight metallic character of the Bi-O bonds is still observed which would disagree with some experimental reports. The calculations show that the changes on the structural properties are associated to the presence or absence of the Bi-O {\it pockets} in the Fermi surface Comment: 12 pages, 7 Figures, 1 table |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect