de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Heat conduction and thermal expansion of YBa2Cu3O7−δ at low temperature

MPS-Authors
There are no MPG-Authors available
Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Sparn, G., Schiebeling, W., Lang, M., Held, R., Gottwick, U., Steglich, F., et al. (1988). Heat conduction and thermal expansion of YBa2Cu3O7−δ at low temperature. Physica C, 153, 1010-1011. doi:10.1016/S0921-4534(88)80200-4.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-D49C-B
Abstract
The thermal conductivity к(T) of sintered YBa2Cu3O7-δ samples follows a T3 dependence for T ≦ 0.8K due to the phonon size effect. For superconducting material (δ = 0.1), an additional linear term AT exists in к(T) which is absent in the semiconducting samples (δ > 0:63). This aT term is attributed to some low-energy excitations different from phonons. The low-T thermal expansion of all samples studied is dominated by extrinsic effects.