Thermoelectric coefficient in nanoisland metallic films

• Published in: Physics letters. A Vol. 383; no. 24; pp. 2943 - 2947
• Main Authors: Boltaev, A.P., Pudonin, F.A., Sherstnev, I.A., Egorov, D.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 22-08-2019
• Subjects: Conductivity; Island film; Thermoelectric coefficient; Thermopower; Thin film; Conductivity; Thermopower; Island film; Thermoelectric coefficient; Thin film
• ISSN: 0375-9601; 1873-2429
• DOI: 10.1016/j.physleta.2019.06.038

We study the thermoelectric properties of island metal films on a dielectric substrate. Dependence of thermoelectric coefficient of metal films on their thickness with the dimensionless conductance g>1 and g<1 was investigated. Also, the thermopower dependence of island metal structures with g<1 on the chemical composition of nanostructures was studied. We found that regardless of tunneling or Drude character of conductivity, the value of the thermoelectric coefficient in island metal films is determined by the properties of film metal element.
•Thermoelectric properties of island films on the dielectric substrate were studied.•The thermoelectric coefficient of island film is determined by the metal element properties.•The temperature gradient in a metal island is created by the heat flowing from the substrate and dielectric barrier.•Tunneling conductivity does not determine the value of the thermoelectric coefficient is island structures.