Nakayama, K., Sato, T., Richard, P., Kawahara, T., Sekiba, Y., Qian, T., ...
We have performed high-resolution angle-resolved photoemission spectroscopy of iron-chalcogenide superconductor Fe1.03Te0.7Se0.3 (Tc = 13 K) to investigate the electronic structure relevant to...
Fermi surface dichotomy of superconducting gap and pseudogap in underdoped pnictides (2009)
Richard, P., Nakayama, K., Kawahara, T., Sekiba, Y., Qian, T., ...
The recent discovery of high temperature superconductivity in many iron-arsenic (pnictides) materials has brought new excitement to the field of condensed matter physics. A flurry of research...
Evolution of a pairing-induced pseudogap from the superconducting gap of (Bi,Pb)2Sr2CuO6 (2009)
Nakayama, K., Sato, T., Sekiba, Y., Terashima, K., Richard, P., Takahashi, T., ...
We have performed an ultrahigh-resolution angle-resolved photoemission spectroscopy study of slightly-overdoped (Bi,Pb)2Sr2CuO6 to elucidate the origin of pseudogap. By using a newly developed...
Sekiba, Y., Sato, T., Nakayama, K., Terashima, K., Richard, P., Bowen, J. H., ...
We have performed high-resolution angle-resolved photoemission spectroscopy on heavily electron-doped non-superconducting (SC) BaFe$_{1.7}$Co$_{0.3}$As$_2$. We find that the two hole Fermi surface...
Fermi surface nesting induced strong pairing in iron-based superconductors (2008)
Terashima, K., Sekiba, Y., Bowen, J. H., Nakayama, K., Kawahara, T., Sato, T., ...
The discovery of high-temperature superconductivity in iron pnictides raised the possibility of an unconventional superconducting mechanism in multiband materials. The observation of...
Nakayama, K., Sato, T., Richard, P., Sekiba, Y., Souma, S., ...
We have performed high-resolution angle-resolved photoemission spectroscopy on the optimally-doped Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$ compound and determined the accurate momentum dependence of the...
Band Structure and Fermi Surface of an Extremely Overdoped Iron-Based Superconductor KFe2As2 (2008)
Sato, T., Nakayama, K., Sekiba, Y., Richard, P., Souma, S., ...
We have performed high-resolution angle-resolved photoemission spectroscopy on heavily overdoped KFe_2As_2 (transition temperature (Tc = 3 K). We observed several renormalized bands near the Fermi...
Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2 (2008)
Ding, H., Richard, P., Nakayama, K., Sugawara, T., Arakane, T., Sekiba, Y., ...
The recent discovery of superconductivity in iron-arsenic compounds below a transition temperature (Tc) as high as 55K ended the monopoly of copper oxides (cuprates) in the family of high-Tc...
Fermi surface nesting induced strong pairing in iron-based superconductors
Terashima, K., Sekiba, Y., Bowen, J. H., Nakayama, K., Kawahara, T., Sato, T., ...
The discovery of high-temperature superconductivity in iron pnictides raised the possibility of an unconventional superconducting mechanism in multiband materials. The observation of Fermi-surface...