Surface electronic structure of the NdB{sub 6}(110) clean surface studied by angle-resolved photoemission spectroscopy
- Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-77 (Japan)
- Synchrotron Radiation Laboratory, Institute for Solid State Physics, University of Tokyo, Minato-ku, Tokyo 106 (Japan)
An angle-resolved photoemission study of the NdB{sub 6}(110) clean surface has been done in order to investigate in detail the surface electronic structure. From the dependence of the valence-band photoemission spectra on the surface condition and the exciting photon energy, we found additional peaks corresponding to the surface states on the NdB{sub 6}(110) surface. These surface states are located at around 1.8 eV in binding energy. The dispersion relations of these surface states were determined along the {bar {Gamma}}-{bar M} symmetry line in the surface Brillouin zone and it is found that the energy dispersion for the present surface state is about 250 meV. From the photon energy dependence and the analogy of these observations with previous results for the LaB{sub 6}(110) clean surface, it is concluded that the present surface states have the same specifications as those of the LaB{sub 6}(110) surface and are ascribed to the B 2p dangling bonds of the surface B framework. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 542649
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 56, Issue 12; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Angle-resolved photoemission study of the clean and hydrogen-covered Rh(111) surface
Topological surface states on the nonpolar (110) and (111) surfaces of SmB6