Yoon, ImTaek Kim, JinSang Cho, HakDong Cho, Sangeun Yuldashev, Shavkat U. 2024-01-19T18:00:31Z 2024-01-19T18:00:31Z 2021-09-05 2020-04 1862-6254 https://pubs.kist.re.kr/handle/201004/118789 The 3D topological insulator Bi2Te3 is a well-known semiconductor material with a large Seebeck coefficient, and it is widely used in thermoelectric generators. The spin-momentum-locked surface states in topological insulator induce electronic spin polarization which may be used for spin generation and accumulation. Under a temperature gradient, the accumulation of surface electrons with opposite spin directions at the hot and cold sides of the sample will occur. Thus, the spin Seebeck effect (SSE) is detected through the inverse spin Hall effect in heavy metal Pt electrodes with a strong spin-orbit interaction. The SSE is observed in the topological insulator Bi2Te3 without application of an external magnetic field. The spin Seebeck coefficient in the Bi2Te3 topological insulator increases with increasing surface disorder, which is explained via the Dyakonov-Perel mechanism of the spin relaxation time. English WILEY-V C H VERLAG GMBH Observation of the Spin Seebeck Effect in Bi2Te3 Topological Insulator without an External Magnetic Field Article 10.1002/pssr.202000004 1 PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, v.14, no.4 PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS 14 4 scie scopus 000513998200001 2-s2.0-85079714791 Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Materials Science Physics Article Bi2Te3 spin Seebeck effect spin-momentum locking surface states topological insulators