Observation of Jonscher law in ac hopping conduction of the electron-doped nanoporous crystal 12CaO·7Al2O3 in a THz frequency range
Physical Review B - Condensed Matter and Materials Physics Volume 70 Issue 19
Page 193104-1-193104-4
published_at 2004-11-15
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| File | |
| Title ( eng ) |
Observation of Jonscher law in ac hopping conduction of the electron-doped nanoporous crystal 12CaO·7Al2O3 in a THz frequency range
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| Creator |
Harimochi Hiroyuki
Ishizaka Masahiro
Yamanishi Masamichi
Matsuishi Satoshi
Hosono Hideo
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 70 |
| Issue | 19 |
| Start Page | 193104-1 |
| End Page | 193104-4 |
| Abstract |
We have performed terahertz time-domain spectroscopy of carrier-doped nanoporous crystal 12CaO·7Al2O3 showing the Mott variable range hopping at room temperature. The real part of the dielectric constant clearly demonstrates the nature of localized carriers. The frequency dependence of both the real and imaginary parts of the dielectric constant can be simply explained by assuming two contributions: a dielectric response by the parent compound with no carriers and an ac hopping conduction with the Jonscher law generally reported up to GHz range. The possible obedience to the Jonscher law in the THz range suggests a relaxation time of the hopping carriers much faster than 1 ps in the carrier-doped 12CaO·7Al2O3.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2004-11-15 |
| Rights |
Copyright (c) 2006 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.70.193104
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.70.193104
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