onr:"swepub:oai:DiVA.org:umu-26416"
Search: onr:"swepub:oai:DiVA.org:umu-26416" > Thermal conductivit...
- 1 of 1
- Previous record
- Next record
- To hitlist
Thermal conductivity of bulk YBa2Cu4O8 and the phonon transport model
-
- Sundqvist, Bertil (author)
- Umeå universitet,Institutionen för fysik
-
- Andersson, Britt M. (author)
- Umeå universitet,Institutionen för fysik
- (creator_code:org_t)
- Elsevier Science B.V. 1994
- 1994
- English.
- In: Physica C, volume 235-240. - : Elsevier Science B.V.. ; , s. 1377-1378
- Conference paper (peer-reviewed)
Abstract
Subject headings
Close
- We have measured the thermal conductivity varkappa of bulk YBa2Cu4O8 (1-2-4) between 30 and 310 K and at pressures p up to 1 GPa. At p = 0, varkappa = 10 Wm−1K−1 near 100 K, twice that of sintered YBa2Cu3O−δ (1-2-3). varkappa also decreases with increasing T more rapidly than in 1-2-3, to 7.4 Wm−1K−1 at 300 K. Under pressure, varkappa increases slowly with p above 150 K, but dvarkappa/dp decreases at lower T. Our results are in excellent agreement with a semi-classical model for phonon thermal conductivity, provided we assume significant charge transfer with pressure. The calculated phonon mean free path is much larger than the lattice spacing at all T.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Thermal conductivity
- superconductivity
- High transition temperature superconductor
- HTS
- HiTc
- high pressure
- YBa2Cu4O8
- phonon transport
- electron-phonon interaction
- charge transfer
- Condensed matter physics
- Kondenserade materiens fysik
- Superconductivity
- Supraledning
- fysik
- Physics
Publication and Content Type
- ref (subject category)
- kon (subject category)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Sundqvist, Berti ...
- Andersson, Britt ...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Condensed Matter ...
- Articles in the publication
- Physica C, volum ...
- By the university
- Umeå University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
