TY - JOUR
T1 - Periodic density-of-states modulations in superconducting (formula presented)
AU - Greven, M.
AU - Kapitulnik, A.
AU - Howald, C.
AU - Eisaki, H.
AU - Kaneko, N.
PY - 2003
Y1 - 2003
N2 - In this paper we show, using scanning tunneling spectroscopy, the existence of static striped density of electronic states in nearly optimally doped (formula presented) in zero field. The observed modulation is strongest at roughly half the superconducting gap energy and is aligned with the Cu-O bonds, with a periodicity of four lattice constants, exhibiting features characteristic of a two-dimensional system of line objects. These features also exhibit asymmetries between the two orthogonal directions locally, pointing to a possible broken symmetry state (i.e., a stripe phase). We further show that the density of states modulation manifests itself as a shift of states from above to below the superconducting gap. The fact that a single energy scale (i.e., the gap) appears for both superconductivity and stripes suggests that these two effects have the same microscopic origin.
AB - In this paper we show, using scanning tunneling spectroscopy, the existence of static striped density of electronic states in nearly optimally doped (formula presented) in zero field. The observed modulation is strongest at roughly half the superconducting gap energy and is aligned with the Cu-O bonds, with a periodicity of four lattice constants, exhibiting features characteristic of a two-dimensional system of line objects. These features also exhibit asymmetries between the two orthogonal directions locally, pointing to a possible broken symmetry state (i.e., a stripe phase). We further show that the density of states modulation manifests itself as a shift of states from above to below the superconducting gap. The fact that a single energy scale (i.e., the gap) appears for both superconductivity and stripes suggests that these two effects have the same microscopic origin.
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U2 - 10.1103/PhysRevB.67.014533
DO - 10.1103/PhysRevB.67.014533
M3 - Article
AN - SCOPUS:85038322616
SN - 1098-0121
VL - 67
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 1
ER -