activity
19931999
most citedObservation of a van Hove Singularity in with Angle Resolved Photoemission

86 citations · 174 across the 9 of their papers we have counts for

collaborators

9 papers

cond-mat.supr-con1999★ 2 cited

Superconducting Gap vs. Wave Vector: Evidence for Hot Regions on the Fermi Surface

R. Gatt, S. Christensen, B. Frazer +11

We have used angular resolved photoemission to measure the angular dependence of the superconducting gap in highly overdoped Bi2212 (Tc=65K). While the node at 45 degrees is conser…

cond-mat1995

Shadow bands in overdoped Bi_2Sr_2CaCu_2O_{8+x}

S. La Rosa, R. J. Kelley, C. Kendziora +3

We performed angle-resolved photoemission experiments on overdoped single crystal samples with Tc values as low as 55K and very narrow transitions as measur…

cond-mat1995★ 19 cited

INTERLAYER COUPLING AND THE METAL-INSULATOR TRANSITION IN Pr-SUBSTITUTED Bi(2)Sr(2)CaCu(2)O(8+y)

C. Quitmann, B. Beschoten, R. J. Kelley +2

Substitution of rare-earth ions for Ca in Bi2Sr2CaCu2O8+y is known to cause a metal-insulator transition. Using resonant photoemission we study how this chemical substitution affec…

cond-mat1994★ 36 cited

and Oxygen Stoichiometry: Structure, Resistivity, Fermi Surface Topology and Normal State Properties

Jian Ma, P. Alméras, R. J. Kelley +6

(2212) single crystal samples were studied using transmission electron microscopy (TEM), plane () and axis () res…

cond-mat1994★ 2 cited

Localization Effects in Bi2Sr2Ca(Cu,Co)2O8+y High Temperature Superconductors

C. Quitmann, P. Almeras, Jian Ma +4

Doping Bi2Sr2Ca1Cu2O8+y with Co causes a superconductor-insulator transition. We study correlations between changes in the electrical resistivity RHOab(T) and the electronic bandst…

cond-mat1994★ 11 cited

Localized electronic states and photoemission superconducting condensate in BiSrCaCuO

Jian Ma, C. Quitmann, R. J. Kelley +2

We present the first detailed angle-resolved photoemission evidence that there are two types of carriers that contribute to the photoemission superconducting condensate in $Bi_{2}S…

cond-mat1994★ 86 cited

Observation of a van Hove Singularity in with Angle Resolved Photoemission

Jian Ma, C. Quitmann, R. J. Kelley +4

We have performed high energy resolution angle-resolved photoemission studies of the normal state band structure of oxygen overdoped . We find that…

cond-mat1994★ 6 cited

Temperature dependence of the superconducting gap anisotropy in BiSrCaCuO

Jian Ma, C. Quitmann, R. J. Kelley +3

We present the first detailed data of the momentum-resolved, temperature dependence of the superconducting gap of , complemented by similar data on…

cond-mat1993★ 12 cited

Effect of Iodine Doping on BiSrCaCuO: Charge Transfer or Interlayer Coupling?

Jian Ma, P. Alméras, R. J. Kelley +5

A comparative study has been made of iodine-intercalated BiSrCaCuO single crystal and 1 atm O annealed BiSrCaCuO s…