Published January 12, 2015
| Version v1
Journal article
Spectroscopic study of low-temperature hydrogen absorption in palladium
- 1. Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University, Motooka, Nishi-Ku, Fukuoka 819-0395 (Japan)
- 2. Department of Physics, Faculty of Education, Kanazawa University, Kakuma-machi, Kanazawa 920-1192 (Japan)
- 3. Department of Physics, Kyushu University, Hakozaki, Higashi-Ku, Fukuoka 812-8581 (Japan)
Description
We report real-time detection of hydrogen (H) absorption in metallic palladium (Pd) nano-contacts immersed in liquid H2 using inelastic electron spectroscopy (IES). After introduction of liquid H2, the spectra exhibit the time evolution from the pure Pd to the Pd hydride, indicating that H atoms are absorbed in Pd nano-contacts even at the temperature where the thermal process is not expected. The IES time and bias voltage dependences show that H absorption develops by applying bias voltage 30 ∼ 50 mV, which can be explained by quantum tunneling. The results represent that IES is a powerful method to study the kinetics of high density H on solid surface
Additional details
Identifiers
- DOI
- 10.1063/1.4905729;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 106
- Journal Issue
- 2
- Journal Page Range
- p. 021605-021605.4
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46104789
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION; ATOMS; DENSITY; ELECTRIC POTENTIAL; ELECTRON SPECTROSCOPY; HYDRIDES; HYDROGEN; LIQUIDS; PALLADIUM; SOLIDS; SURFACES; TUNNEL EFFECT
- Descriptors DEC
- ELEMENTS; FLUIDS; HYDROGEN COMPOUNDS; METALS; NONMETALS; PHYSICAL PROPERTIES; PLATINUM METALS; SORPTION; SPECTROSCOPY; TRANSITION ELEMENTS
Optional Information
- Notes
- (c) 2015 AIP Publishing LLC