Thermoelectric Effect across the Metal−Insulator Domain Walls in VO₂ Microbeams

Citations Over TimeTop 10% of 2009 papers

Abstract

We report on measurements of Seebeck effect in single-crystal VO(2) microbeams across their metal-insulator phase transition. One-dimensionally aligned metal-insulator domain walls were reversibly created and eliminated along single VO(2) beams by varying temperature, which allows for accurate extraction of the net contribution to the Seebeck effect from these domain walls. We observed significantly lower Seebeck coefficient in the metal-insulator coexisting regime than predicted by a linear combination of contributions from the insulator and metal domains. This indicates that the net contribution of the domain walls has an opposite sign from that of the insulator and metal phases separately. Possible origins that may be responsible for this unexpected effect were discussed in the context of complications in this correlated electron material.

Related Papers

• → Spin-dependent Peltier effect of perpendicular currents in multilayered nanowires(2006)136 cited
• → Spin and charge thermopower effects in the ferromagnetic graphene junction(2016)7 cited
• → Unconventional spin-dependent thermopower in epitaxial Co2Ti0.6V0.4Sn0.75 Heusler film(2019)3 cited
• → Anomalous magneto-thermoelectric transport in biased bilayer phosphorene(2021)3 cited
• → The thermoelectric power of the metallic glass Ca0.8Al0.2(1981)23 cited