Ultrahigh-resolution photoemission spectroscopy of superconductors using a VUV laser

T. Kiss; T. Shimojima; F. Kanetaka; K. Kanai; T. Yokoya; S. Shin; Y. Onuki; T. Togashi; C. Q. Zhang; C. T. Chen; S. Watanabe

doi:10.1016/j.elspec.2005.01.154

Ultrahigh-resolution photoemission spectroscopy of superconductors using a VUV laser

T. Kiss, T. Shimojima, F. Kanetaka, K. Kanai, T. Yokoya, S. Shin, Y. Onuki, T. Togashi, C. Q. Zhang, C. T. Chen, S. Watanabe

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

We have developed an ultrahigh-resolution photoemission system using a quasi continuous wave (quasi-CW) VUV laser. The photon energy of the VUV laser is 6.994 eV. It has a line width of 260 μeV and a repetition rate of 80 MHz. The photon energy of this laser is the highest for a quasi-CW laser. Using a quasi-CW laser removes the space charge effect and hence does not degrade the energy resolution. For the electron analyser, we use the newly designed ultrahigh-resolution photoelectron analyser GAMMADATA-SCIENTA R4000. The analyser resolution is about 250 μeV with a wide collecting angle of about 38°. The total energy resolution of this system is measured to be 360 μeV for the Fermi edge of gold. Using this system, we have measured several low transition temperature superconductors and succeeded to observe the bulk superconducting state of these materials.

Original language	English
Pages (from-to)	953-956
Number of pages	4
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.154
Publication status	Published - Jun 2005
Externally published	Yes

Keywords

Bulk electron structure
Quasi-CW laser
Superconducting gap
Ultrahigh-resolution photoemission spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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10.1016/j.elspec.2005.01.154

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title = "Ultrahigh-resolution photoemission spectroscopy of superconductors using a VUV laser",

abstract = "We have developed an ultrahigh-resolution photoemission system using a quasi continuous wave (quasi-CW) VUV laser. The photon energy of the VUV laser is 6.994 eV. It has a line width of 260 μeV and a repetition rate of 80 MHz. The photon energy of this laser is the highest for a quasi-CW laser. Using a quasi-CW laser removes the space charge effect and hence does not degrade the energy resolution. For the electron analyser, we use the newly designed ultrahigh-resolution photoelectron analyser GAMMADATA-SCIENTA R4000. The analyser resolution is about 250 μeV with a wide collecting angle of about 38°. The total energy resolution of this system is measured to be 360 μeV for the Fermi edge of gold. Using this system, we have measured several low transition temperature superconductors and succeeded to observe the bulk superconducting state of these materials.",

keywords = "Bulk electron structure, Quasi-CW laser, Superconducting gap, Ultrahigh-resolution photoemission spectroscopy",

author = "T. Kiss and T. Shimojima and F. Kanetaka and K. Kanai and T. Yokoya and S. Shin and Y. Onuki and T. Togashi and Zhang, {C. Q.} and Chen, {C. T.} and S. Watanabe",

note = "Funding Information: We thank Drs. M. Hedo, A. Chainani, and M. Taguchi for valuable discussion. This work was supported by Grant-in-aid from the Ministry of Education, Science, and Culture of Japan. T.K. thanks the Japan Society for the Promotion of Science (JSPS) for financial support.",

year = "2005",

month = jun,

doi = "10.1016/j.elspec.2005.01.154",

language = "English",

volume = "144-147",

pages = "953--956",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier",

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TY - JOUR

T1 - Ultrahigh-resolution photoemission spectroscopy of superconductors using a VUV laser

AU - Kiss, T.

AU - Shimojima, T.

AU - Kanetaka, F.

AU - Kanai, K.

AU - Yokoya, T.

AU - Shin, S.

AU - Onuki, Y.

AU - Togashi, T.

AU - Zhang, C. Q.

AU - Chen, C. T.

AU - Watanabe, S.

N1 - Funding Information: We thank Drs. M. Hedo, A. Chainani, and M. Taguchi for valuable discussion. This work was supported by Grant-in-aid from the Ministry of Education, Science, and Culture of Japan. T.K. thanks the Japan Society for the Promotion of Science (JSPS) for financial support.

PY - 2005/6

Y1 - 2005/6

N2 - We have developed an ultrahigh-resolution photoemission system using a quasi continuous wave (quasi-CW) VUV laser. The photon energy of the VUV laser is 6.994 eV. It has a line width of 260 μeV and a repetition rate of 80 MHz. The photon energy of this laser is the highest for a quasi-CW laser. Using a quasi-CW laser removes the space charge effect and hence does not degrade the energy resolution. For the electron analyser, we use the newly designed ultrahigh-resolution photoelectron analyser GAMMADATA-SCIENTA R4000. The analyser resolution is about 250 μeV with a wide collecting angle of about 38°. The total energy resolution of this system is measured to be 360 μeV for the Fermi edge of gold. Using this system, we have measured several low transition temperature superconductors and succeeded to observe the bulk superconducting state of these materials.

AB - We have developed an ultrahigh-resolution photoemission system using a quasi continuous wave (quasi-CW) VUV laser. The photon energy of the VUV laser is 6.994 eV. It has a line width of 260 μeV and a repetition rate of 80 MHz. The photon energy of this laser is the highest for a quasi-CW laser. Using a quasi-CW laser removes the space charge effect and hence does not degrade the energy resolution. For the electron analyser, we use the newly designed ultrahigh-resolution photoelectron analyser GAMMADATA-SCIENTA R4000. The analyser resolution is about 250 μeV with a wide collecting angle of about 38°. The total energy resolution of this system is measured to be 360 μeV for the Fermi edge of gold. Using this system, we have measured several low transition temperature superconductors and succeeded to observe the bulk superconducting state of these materials.

KW - Bulk electron structure

KW - Quasi-CW laser

KW - Superconducting gap

KW - Ultrahigh-resolution photoemission spectroscopy

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JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

ER -

Ultrahigh-resolution photoemission spectroscopy of superconductors using a VUV laser

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Keywords

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