How Cooper pairs vanish approaching the Mott insulator in Bi2Sr2CaCu2O8+d (2008)
Kohsaka, Y., Taylor, C., Wahl, P., Schmidt, A., Lee, Jhinhwan, Fujita, K., ...
The antiferromagnetic ground state of copper oxide Mott insulators is achieved by localizing an electron at each copper atom in real space (r-space). Removing a small fraction of these electrons...
Alldredge, J. W., Lee, Jinho, McElroy, K., Wang, M., Fujita, K., Kohsaka, Y., ...
A complete knowledge of its excitation spectrum could greatly benefit efforts to understand the unusual form of superconductivity occurring in the lightly hole-doped copper-oxides. Here we use...
Hanaguri, T., Kohsaka, Y., Davis, J. C., Lupien, C., Yamada, I., Azuma, M., ...
High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes but each cuprate has its own character. The study of the material dependence of the d-wave...
Kohsaka, Y., Taylor, C., Fujita, K., Schmidt, A., Lupien, C., Hanaguri, T., ...
Removing electrons from the CuO2 plane of cuprates alters the electronic correlations sufficiently to produce high-temperature superconductivity. Associated with these changes are spectral weight...
Angle-resolved photoemission studies of lattice polaron formation in the cuprate Ca2CuO2Cl2 (2007)
Shen, K. M., Ronning, F., Meevasana, W., Lu, D. H., Ingle, N. J. C., Baumberger, F., ...
To elucidate the nature of the single-particle excitations in the undoped parent cuprates, we have performed a detailed study of Ca2CuO2Cl2 using photoemission spectroscopy. The photoemission...
A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2} (2004)
Hanaguri, T., Lupien, C., Kohsaka, Y., Azuma, M., Takano, M., ...
The phase diagram of hole-doped copper oxides shows four different electronic phases existing at zero temperature. Familiar among these are the Mott insulator, high-transition-temperature...
Waku, K., Katsufuji, T., Kohsaka, Y., Sasagawa, T., Takagi, H., Kishida, H., ...
We report the reflectivity and the resistivity measurement of Ca_{2-x}Na_{x}CuO_{2}Cl_{2} (CNCOC), which has a single-CuO2-plane lattice with no orthorhombic distortion. The doping dependence of the...
Shen, K. M., Ronning, F., Lu, D. H., Lee, W. S., Ingle, N. J. C., Meevasana, W., ...
The evolution of Ca$_{2-x}$Na$_{x}$CuO$_{2}$Cl$_{2}$ from Mott insulator to superconductor was studied using angle-resolved photoemission spectroscopy. By measuring both the excitations near the...
Kohsaka, Y., Iwaya, K., Satow, S., Hanaguri, T., Azuma, M., Takano, M., ...
The spatial variation of electronic states was imaged in the lightly doped Mott insulator Ca_{2-x}Na_{x}CuO_{2}Cl_{2} using scanning tunneling microscopy / spectroscopy (STM/STS). We observed...
Fully Gapped Single-Particle Excitations in the Lightly Doped Cuprates (2003)
Shen, K. M., Yoshida, T., Lu, D. H., Ronning, F., Armitage, N. P., Lee, W. S., ...
The low-energy excitations of the lightly doped cuprates were studied by angle-resolved photoemission spectroscopy. A finite gap was measured over the entire Brillouin zone, including along the...
Ronning, F., Sasagawa, T., Kohsaka, Y., Shen, K. M., Damascelli, A., Kim, C., ...
We present angle resolved photoemission (ARPES) data on Na-doped Ca$_2$CuO$_2$Cl$_2$. We demonstrate that the chemical potential shifts upon doping the system across the insulator to metal...
Kohsaka, Y., Sasagawa, T., Ronning, F., Yoshida, T., Kim, C., Hanaguri, T., ...
Electronic evolution from an antiferromagnet to a high-Tc superconductor is revealed by angle-resolved photoemission experiments on tetragonal Ca(1.9)Na(0.1)CuO(2)Cl(2) single crystals, which were...