상세정보
학술지
Energy Gap Modulation in V2O5 Nanowires by Gas Adsorption
- 발행일
- 200812
- 출처
- Applied Physics Letters, v.93 no.23, pp.1-3
- ISSN
- 0003-6951
- 출판사
- American Institute of Physics (AIP)
- 협약과제
- 08ZB1200, 정보통신 미래신기술연구사업(나노 기반 신개념 소자연구), 정태형
- 초록
- The current-voltage characteristics at various pressures (2-10 atm) and the scanning tunneling microscopy of vanadium pentoxide nanowires (VONs) with the inert gases (He, Ne, and Ar) and diatomic molecules (H2, N2, O2) have been investigated. The gas dependent conductance (G) is consistent with the inverse energy gap obtained from the scanning tunneling spectroscopy study for the gas-adsorbed single VON. The three possible interactions for gas adsorption of the VON have been discussed. Among them, we have found that the induced dipole-dipole interaction between adsorbed gases plays an important role in conductance variation in the gas adsorbed VON using the conductance per molecule (G/N). © 2008 American Institute of Physics.
- KSP 제안 키워드
- Diatomic molecules, Energy gap, Gas adsorption, Scanning Tunneling Microscopy, Scanning Tunneling Spectroscopy, current-voltage characteristics, dipole-dipole interaction, induced dipole, inert gases, vanadium pentoxide