TY - JOUR
T1 - Accessing surface Brillouin zone and band structure of picene single crystals
AU - Xin, Qian
AU - Duhm, Steffen
AU - Bussolotti, Fabio
AU - Akaike, Kouki
AU - Kubozono, Yoshihiro
AU - Aoki, Hideo
AU - Kosugi, Taichi
AU - Kera, Satoshi
AU - Ueno, Nobuo
PY - 2012/5/29
Y1 - 2012/5/29
N2 - We have experimentally revealed the band structure and the surface Brillouin zone of insulating picene single crystals (SCs), the mother organic system for a recently discovered aromatic superconductor, with ultraviolet photoelectron spectroscopy (UPS) and low-energy electron diffraction with a laser for photoconduction. A hole effective mass of 2.24m 0 and the hole mobility μ h 9.0cm2/Vs (298 K) were deduced in the Γ-Y direction. We have further shown that some picene SCs did not show charging during UPS even without the laser, which indicates that pristine UPS works for high-quality organic SCs.
AB - We have experimentally revealed the band structure and the surface Brillouin zone of insulating picene single crystals (SCs), the mother organic system for a recently discovered aromatic superconductor, with ultraviolet photoelectron spectroscopy (UPS) and low-energy electron diffraction with a laser for photoconduction. A hole effective mass of 2.24m 0 and the hole mobility μ h 9.0cm2/Vs (298 K) were deduced in the Γ-Y direction. We have further shown that some picene SCs did not show charging during UPS even without the laser, which indicates that pristine UPS works for high-quality organic SCs.
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U2 - 10.1103/PhysRevLett.108.226401
DO - 10.1103/PhysRevLett.108.226401
M3 - Article
AN - SCOPUS:84861827620
SN - 0031-9007
VL - 108
JO - Physical Review Letters
JF - Physical Review Letters
IS - 22
M1 - 226401
ER -