Journal article
Surface acoustic wave devices on bulk ZnO crystals at low temperature
- Abstract:
- Surface acoustic wave (SAW) devices based on thin films of ZnO are a well established technology. However, SAW devices on bulk ZnO crystals are not practical at room temperature due to the significant damping caused by finite electrical conductivity of the crystal. Here, by operating at low temperatures, we demonstrate effective SAW devices on the (0001) surface of bulk ZnO crystals, including a delay line operating at SAW wavelengths of λ = 4 and 6 μm and a one-port resonator at a wavelength of λ = 1.6 μm. We find that the SAW velocity is temperature dependent, reaching v ≈ 2.68 km/s at 10 mK. Our resonator reaches a maximum quality factor of Qi ≈ 1.5 × 105, demonstrating that bulk ZnO is highly viable for low temperature SAW applications. The performance of the devices is strongly correlated with the bulk conductivity, which quenches SAW transmission above 200 K.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 456.2KB, Terms of use)
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- Publisher copy:
- 10.1063/1.4908248
Authors
- Publisher:
- AIP Publishing
- Journal:
- Applied Physics Letters More from this journal
- Volume:
- 106
- Issue:
- 6
- Pages:
- 063509-063509
- Publication date:
- 2015-02-13
- Acceptance date:
- 2015-02-03
- DOI:
- EISSN:
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1077-3118
- ISSN:
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0003-6951
- Keywords:
- Pubs id:
-
pubs:512563
- UUID:
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uuid:ccd55bac-f32e-46ac-9359-26f3ffd4e88f
- Local pid:
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pubs:512563
- Source identifiers:
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512563
- Deposit date:
-
2016-06-17
Terms of use
- Copyright holder:
- AIP Publishing LLC
- Copyright date:
- 2015
- Notes:
- This is the published version of a journal article published by AIP Publishing in Applied Physics Letters on 2015-02-13, available online: http://dx.doi.org/10.1063/1.4908248
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