Abstract
Microbeam photoemission spectroscopy of 30-meV energy resolution and 0.3-μm lateral resolution has been applied to observe (111) surface domains formed on a polycrystalline copper plate. The light source was fs-coherent radiation at a wavelength of 140 nm (8.9 eV). The images based on the intensity of the Shockley-surface-state feature clearly show many crystalline domains, exposing the (111) surface. The energy of the surface-state feature was distributed in the range from -−0.3 to −0.1 eV with respect to the Fermi level (EF). In addition to the μm-scale information, the high-energy-resolution spectroscopy provides detailed insight on the nm-scale surface morphology. Surface images based on the unoccupied image-potential state were also measured by employing two-photon photoemission with uv light at a wavelength of 280 nm (4.43 eV). The image state was always at 4.10 eV, which is very close to the state of single-crystalline Cu(111). The Shockley state was observed even on poorly crystallized areas, while the image-potential state was observed only on areas where mean (111) terrace lengths are sufficiently long.
| Original language | English |
|---|---|
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 68 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - Oct 14 2003 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Photoemission microspectroscopy of occupied and unoccupied surface states of crystalline facets formed on polycrystalline copper. / Munakata, Toshiaki; Sugiyama, Takeharu; Masuda, Takuya; Ueno, Nobuo.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 16, 14.10.2003.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Photoemission microspectroscopy of occupied and unoccupied surface states of crystalline facets formed on polycrystalline copper
AU - Munakata, Toshiaki
AU - Sugiyama, Takeharu
AU - Masuda, Takuya
AU - Ueno, Nobuo
PY - 2003/10/14
Y1 - 2003/10/14
N2 - Microbeam photoemission spectroscopy of 30-meV energy resolution and 0.3-μm lateral resolution has been applied to observe (111) surface domains formed on a polycrystalline copper plate. The light source was fs-coherent radiation at a wavelength of 140 nm (8.9 eV). The images based on the intensity of the Shockley-surface-state feature clearly show many crystalline domains, exposing the (111) surface. The energy of the surface-state feature was distributed in the range from -−0.3 to −0.1 eV with respect to the Fermi level (EF). In addition to the μm-scale information, the high-energy-resolution spectroscopy provides detailed insight on the nm-scale surface morphology. Surface images based on the unoccupied image-potential state were also measured by employing two-photon photoemission with uv light at a wavelength of 280 nm (4.43 eV). The image state was always at 4.10 eV, which is very close to the state of single-crystalline Cu(111). The Shockley state was observed even on poorly crystallized areas, while the image-potential state was observed only on areas where mean (111) terrace lengths are sufficiently long.
AB - Microbeam photoemission spectroscopy of 30-meV energy resolution and 0.3-μm lateral resolution has been applied to observe (111) surface domains formed on a polycrystalline copper plate. The light source was fs-coherent radiation at a wavelength of 140 nm (8.9 eV). The images based on the intensity of the Shockley-surface-state feature clearly show many crystalline domains, exposing the (111) surface. The energy of the surface-state feature was distributed in the range from -−0.3 to −0.1 eV with respect to the Fermi level (EF). In addition to the μm-scale information, the high-energy-resolution spectroscopy provides detailed insight on the nm-scale surface morphology. Surface images based on the unoccupied image-potential state were also measured by employing two-photon photoemission with uv light at a wavelength of 280 nm (4.43 eV). The image state was always at 4.10 eV, which is very close to the state of single-crystalline Cu(111). The Shockley state was observed even on poorly crystallized areas, while the image-potential state was observed only on areas where mean (111) terrace lengths are sufficiently long.
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U2 - 10.1103/PhysRevB.68.165404
DO - 10.1103/PhysRevB.68.165404
M3 - Article
VL - 68
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 16
ER -