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dc.contributor.authorP. Jaibanen_US
dc.contributor.authorM. H. Luen_US
dc.contributor.authorT. Eknapakulen_US
dc.contributor.authorS. Chaiyachaden_US
dc.contributor.authorS. H. Yaoen_US
dc.contributor.authorN. Pisitpipathsinen_US
dc.contributor.authorM. Unruanen_US
dc.contributor.authorS. Sirirojen_US
dc.contributor.authorR. H. Heen_US
dc.contributor.authorS. K. Moen_US
dc.contributor.authorA. Watcharapasornen_US
dc.contributor.authorR. Yimnirunen_US
dc.contributor.authorY. Tokuraen_US
dc.contributor.authorZ. X. Shenen_US
dc.contributor.authorH. Y. Hwangen_US
dc.contributor.authorS. Maensirien_US
dc.contributor.authorW. Meevasanaen_US
dc.description.abstract© 2020, The Author(s). The discovery of a two-dimensional electron gas (2DEG) at the LaAlO 3/ SrTiO 3 interface has set a new platform for all-oxide electronics which could potentially exhibit the interplay among charge, spin, orbital, superconductivity, ferromagnetism and ferroelectricity. In this work, by using angle-resolved photoemission spectroscopy and conductivity measurement, we found the reduction of 2DEGs and the changes of the conductivity nature of some ferroelectric oxides including insulating Nb-lightly-substituted KTaO 3, BaTiO 3 (BTO) and (Ca,Zr)-doped BTO across paraelectric-ferroelectric transition. We propose that these behaviours could be due to the increase of space-charge screening potential at the 2DEG/ferroelectric regions which is a result of the realignment of ferroelectric polarisation upon light irradiation. This finding suggests an opportunity for controlling the 2DEG at a bare oxide surface (instead of interfacial system) by using both light and ferroelectricity.en_US
dc.titleSpectral weight reduction of two-dimensional electron gases at oxide surfaces across the ferroelectric transitionen_US
article.title.sourcetitleScientific Reportsen_US
article.volume10en_US Universityen_US Institute of Science and Technologyen_US Mongkut's University of Technology North Bangkoken_US University of Technology Isanen_US Universityen_US University of Technologyen_US Light Source, Berkeleyen_US National Accelerator Laboratoryen_US University of Tokyoen_US Universityen_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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