Academic Journal
Wave acoustics for propagation of ultrasound along a vortex array in superfluid 3A
| العنوان: | Wave acoustics for propagation of ultrasound along a vortex array in superfluid 3A |
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| المؤلفون: | Sonin, E. B., Torizuka, K., Kyynarainen, J. M., Pekola, J. P., Tvalashvili, G. K. |
| المساهمون: | Department of Applied Physics, Aalto-yliopisto, Aalto University |
| سنة النشر: | 1992 |
| المجموعة: | Aalto University Publication Archive (Aaltodoc) / Aalto-yliopiston julkaisuarkistoa |
| الوصف: | A wave-acoustics theory has been developed to describe the propagation of zero sound parallel to vortex lines in rotating A3. We show that a diffraction shadow is formed in which the wave amplitude is suppressed by interference around vortices. This phenomenon contributes to the experimentally observed effect of rotation on the sound amplitude and exceeds the attenuation at large core radii. The dependence of the diffraction contribution on the angular velocity changes drastically at the transition from vortices with a finite core to coreless vortices when the magnetic field is decreased to zero. We derive conditions for the applicability of the effective-medium theory and the classical geometrical acoustic method in describing sound propagation along vortices. ; Peer reviewed |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0163-1829 1550-235X |
| Relation: | Physical Review B; Volume 45, issue 18; Sonin , E B , Torizuka , K , Kyynarainen , J M , Pekola , J P & Tvalashvili , G K 1992 , ' Wave acoustics for propagation of ultrasound along a vortex array in superfluid 3 A ' , Physical Review B , vol. 45 , no. 18 , pp. 10536-10543 . https://doi.org/10.1103/PhysRevB.45.10536; PURE UUID: d3da6d2c-8fe0-467c-bb3c-36facc679de8; PURE ITEMURL: https://research.aalto.fi/en/publications/d3da6d2c-8fe0-467c-bb3c-36facc679de8; PURE LINK: http://www.scopus.com/inward/record.url?scp=35949006594&partnerID=8YFLogxK; PURE FILEURL: https://research.aalto.fi/files/13423324/PhysRevB.45.10536.pdf; https://aaltodoc.aalto.fi/handle/123456789/31189; URN:NBN:fi:aalto-201805222629 |
| DOI: | 10.1103/PhysRevB.45.10536 |
| الاتاحة: | https://aaltodoc.aalto.fi/handle/123456789/31189 https://doi.org/10.1103/PhysRevB.45.10536 |
| Rights: | openAccess |
| رقم الانضمام: | edsbas.B8DB3A03 |
| قاعدة البيانات: | BASE |
| تدمد: | 01631829 1550235X |
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| DOI: | 10.1103/PhysRevB.45.10536 |