Dzurak, A.S.A.S.DzurakSmith, G.G.G.G.SmithBarnes, C.H.W.C.H.W.BarnesPepper, M.M.PepperMart{\\'iCHI-TE LIANG2018-09-102018-09-10199809214526http://www.scopus.com/inward/record.url?eid=2-s2.0-0032091420&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/339691We discuss the use of electron-gas heating for measurements of the diffusion thermopower S of a quantum dot in the regime of single-electron charging. The voltage across a dot in the presence of an electron temperature gradient oscillates about zero with a period equal to that of the Coulomb blockade (CB) oscillations in electrical conductance G. The magnitude of S associated with this thermovoltage has been deduced through a detailed investigation of the temperature gradient in the device. The magnitude and line shape of the resulting thermopower indicate that transport through the dot is a coherent tunneling process, meaning that a simple Mott formulation can be used to relate G and S. In addition, a reproducible fine structure on top of the CB oscillations in S has been observed which appears to result from the N-particle excitation spectrum of the dot. © 1998 Elsevier Science B.V. All rights reserved.Coulomb blockade; Quantum dots; ThermopowerElectric resistance; Electron energy levels; Electron tunneling; Spectrum analysis; Coulomb blockade (CB); Diffusion thermopower; Electron gas heating; Semiconductor quantum dotsjournal article10.1016/S0921-4526(98)00115-X2-s2.0-0032091420WOS:000074919400061