%0 Journal Article %1 Ma1995 %A Ma, Jian %A Alméras, P. %A Kelley, R. J. %A Berger, H. %A Margaritondo, G. %A Cai, X. Y. %A Feng, Y. %A Onellion, M. %D 1995 %I American Physical Society %J Phys. Rev. B %K imported %N 14 %P 9271--9285 %R 10.1103/PhysRevB.51.9271 %T Pb$_0.4$Bi$_1.6$Sr$_2$CaCu_$2$O$_8+x$ and oxygen stoichiometry: Structure, resistivity, Fermi-surface topology, and normal-state properties %V 51 %X Pb0.4Bi1.6Sr2CaCu2O8+x Bi(Pb)-2212 single-crystal samples were studied using transmission electron microscopy (TEM), ab-plane (ρab) and c-axis (ρc) resistivity, and high-resolution angle-resolved ultraviolet photoemission spectroscopy (ARUPS). TEM reveals that the modulation in the b axis for Pb(0.4)-doped Bi(Pb)-2212 is dominantly of Pb type that is not sensitive to the oxygen content of the system, and the system clearly shows a structure of orthorhombic symmetry. Oxygen-annealed samples exhibit a much lower c-axis resistivity and a resistivity minimum at 80–130 K. He-annealed samples exhibit a much higher c-axis resistivity and dρc/dT<0 behavior below 300 K. The Fermi surface (FS) of oxygen-annealed Bi(Pb)-2212 mapped out by ARUPS has a pocket in the FS around the M¯ point and exhibits orthorhombic symmetry. There are flat, parallel sections of the FS, about 60% of the maximum possible along kx=ky, and about 30% along kx=-ky. The wave vectors connecting the flat sections are about 0.72(π,π) along kx=ky, and about 0.80(π,π) along kx=-ky, rather than (π,π). The symmetry of the near-Fermi-energy dispersing states in the normal state changes between oxygen-annealed and He-annealed samples.

@article{Ma1995, abstract = {Pb0.4Bi1.6Sr2CaCu2O8+x [Bi(Pb)-2212] single-crystal samples were studied using transmission electron microscopy (TEM), ab-plane (ρab) and c-axis (ρc) resistivity, and high-resolution angle-resolved ultraviolet photoemission spectroscopy (ARUPS). TEM reveals that the modulation in the b axis for Pb(0.4)-doped Bi(Pb)-2212 is dominantly of Pb type that is not sensitive to the oxygen content of the system, and the system clearly shows a structure of orthorhombic symmetry. Oxygen-annealed samples exhibit a much lower c-axis resistivity and a resistivity minimum at 80–130 K. He-annealed samples exhibit a much higher c-axis resistivity and dρc/dT<0 behavior below 300 K. The Fermi surface (FS) of oxygen-annealed Bi(Pb)-2212 mapped out by ARUPS has a pocket in the FS around the M¯ point and exhibits orthorhombic symmetry. There are flat, parallel sections of the FS, about 60% of the maximum possible along kx=ky, and about 30% along kx=-ky. The wave vectors connecting the flat sections are about 0.72(π,π) along kx=ky, and about 0.80(π,π) along kx=-ky, rather than (π,π). The symmetry of the near-Fermi-energy dispersing states in the normal state changes between oxygen-annealed and He-annealed samples.}, added-at = {2010-11-06T00:14:39.000+0100}, author = {Ma, Jian and Alm\'eras, P. and Kelley, R. J. and Berger, H. and Margaritondo, G. and Cai, X. Y. and Feng, Y. and Onellion, M.}, biburl = {https://www.bibsonomy.org/bibtex/297df6739386c707cca126a412b547e55/nplumb}, doi = {10.1103/PhysRevB.51.9271}, file = {:C\:\\Users\\Nick\\Documents\\Papers\\Ma et al. - Pb-Bi2212 and oxygen stoichiometry, Structure, resistivity, Fermi-surface topology, and normal-state properties.pdf:PDF}, interhash = {ac6960d4dac5c1d0459758432dfd2710}, intrahash = {97df6739386c707cca126a412b547e55}, journal = {Phys. Rev. B}, keywords = {imported}, month = Apr, number = 14, numpages = {14}, owner = {Nick}, pages = {9271--9285}, publisher = {American Physical Society}, timestamp = {2010-11-06T00:14:42.000+0100}, title = {Pb$_{0.4}$Bi$_{1.6}$Sr$_{2}$CaCu_${2}$O$_{8+x}$ and oxygen stoichiometry: Structure, resistivity, Fermi-surface topology, and normal-state properties}, volume = 51, year = 1995 }