[20p-A501-1~12] 7.2 Applications and technologies of electron beams

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[20p-A501-7] Shift in Energy Distribution of Field Emitted Electrons from High-Tc Superconductor Bi2212

〇Haruto Obitsu¹, Tatsuo Iwata¹, Koichi Hata¹, Shigekazu Nagai¹ (1.Mie Univ.)

Keywords:

field emission,superconductor,electron spectroscopy

The interpretation of field emission results from high-Tc oxide superconductors remains unclear. In this study, to elucidate the electron emission characteristics of Bi2212, the energy distributions of field-emitted electrons were measured using the cylindrical electrostatic spectrometer. A Gaussian energy distribution of emitted electrons was observed, and energy shifts were observed with respect to cathode temperature and applied voltage. At the present stage, these observations may be caused by the resonance tunneling effect via the localized states of a protruding atom on the cleaved surface of Bi2212.