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Negative evidence for a proton-tunneling mechanism in the phase transition of KH2PO4-type crystals.
| Title: | Negative evidence for a proton-tunneling mechanism in the phase transition of KH2PO4-type crystals. |
| Authors: | Ichikawa, Mizuhiko Browse this author | | Motida, Kiyosi Browse this author | | Yamada, Noboru Browse this author |
| Issue Date: | 1-Jul-1987 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review. B |
| Volume: | 36 |
| Issue: | 1 |
| Start Page: | 874 |
| End Page: | 876 |
| PMID: | 9942139 |
| Abstract: | We have found a linear relation between the transition temperature T sub c (in K) and the hydrogen-bond length R (in Å) for tetragonal KH2PO4-type crystals, Tc=2290(R-2.428), irrespective of whether the crystals are deuterated or undeuterated; this finding supplies negative evidence for the proton-tunneling mechanism in the phase transition. We deduce from this relation that the isotope effect in the initial pressure derivative of Tc, dTc/dp, reflects not the isotope effect in dTc/dR, so far regarded as supporting evidence of proton tunneling, but that of dR/dp. Some R and dR/dp values at Tc are predicted. |
| Rights: | ©1987 The American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/14410 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 市川 瑞彦
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