Sarma, DD and Prabhakaran, K and Rao, CNR (1988) Temperature dependence of the surface conductivity of YBa2Cu3O7−δ accompanying the change in the concentration of dimerized oxygen holes. In: Solid State Communications, 67 (3). pp. 263-265.
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The intensity of inelastically scattered electrons measured by electron energy loss spectroscopy has been employed to monitor the surface conductivity of YBa2Cu3O6.9 as a function of temperature. The study shows a drastic change in surface conductivity precedes the superconducting transition at 90K. The increase in surface conductivity is accompanied by the formation of dimerized holes in the oxygen derived p-band. This phenomenon is not observed in the non-superconducting YBa2Cu3O6.2.
|Item Type:||Journal Article|
|Additional Information:||Copy rights of this article belongs to Elsevier Science.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||01 Feb 2010 06:51|
|Last Modified:||19 Sep 2010 05:39|
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