[9p-N201-1~14] 6.1 Ferroelectric thin films

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-N201-2] Fabrication of SnS/SnSe artificial superlattices and their characterization of polarization state

〇(M1C)Jumpei Mochizuki¹, Masaki Okumura¹, Yoshihiko Ogasawara², Hiroko Yokota², Shinya Kondo¹, Tomoaki Yamada^1,3 (1.Nagoya Univ., 2.Science Tokyo, 3.Science Tokyo MDX)

Keywords:

ferroelectrics,Two-dimensional layered materials,Pulsed laser deposition

In this study, a new approach was considered to create an artificial superlattice of alternating SnS and SnSe layers, aiming to increase film thickness while preserving the ferroelectric properties exhibited in ultrathin SnS. Thin films of [(SnS)_n/(SnSe)_n]_m (n = 0.2, 1, 2, 3, 4, 5) were deposited on a SrF₂(100) substrate. Large second harmonic intensities were obtained, revealing the possibility that these samples exhibit ferroelectricity.