Abstract
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.
| Original language | English |
|---|---|
| Article number | 021605 |
| Journal | Applied Physics Letters |
| Volume | 106 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 12 2015 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
Spectroscopic study of low-temperature hydrogen absorption in palladium. / Ienaga, K.; Takata, H.; Onishi, Y.; Inagaki, Y.; Tsujii, H.; Kimura, T.; Kawae, T.
In: Applied Physics Letters, Vol. 106, No. 2, 021605, 12.01.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spectroscopic study of low-temperature hydrogen absorption in palladium
AU - Ienaga, K.
AU - Takata, H.
AU - Onishi, Y.
AU - Inagaki, Y.
AU - Tsujii, H.
AU - Kimura, T.
AU - Kawae, T.
PY - 2015/1/12
Y1 - 2015/1/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84923899777&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84923899777&partnerID=8YFLogxK
U2 - 10.1063/1.4905729
DO - 10.1063/1.4905729
M3 - Article
AN - SCOPUS:84923899777
VL - 106
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 2
M1 - 021605
ER -