[13p-A23-1~11] 6.1 Ferroelectric thin films

[13p-A23-6] [Young Scientist Presentation Award Speech] First-principles simulation of nanocapacitors--dead layer effect and negative capacitance

〇Shusuke Kasamatsu¹, Satoshi Watanabe², Seungwu Han³, Cheol Seong Hwang³ (1.ISSP, UTokyo, 2.DME, UTokyo, 3.DMSE, Seoul National Univ.)

Keywords:ferroelectric, first-principles simulation, capacitance

The degradation of dielectric response at interfaces known as the dead layer effect is a barrier against further scaling of semiconductor devices. A possible solution utilizing ferroelectric negative capacitance has been demonstrated experimentally. Here, we discuss the role of polarization domain dynamics and defects in the emergence of negative capacitance using first-principles simulation.