[18a-A23-1~13] 13.5 Semiconductor devices/ Interconnect/ Integration technologies

12:00 PM - 12:15 PM JST(3:00 AM - 3:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-A23-12] Evaluation of magnetic field-dependent quantum capacitance in a p-type Si double quantum dot

〇(M1)Riku Wada¹, Raisei Mizokuchi¹, Chihiro Kondo¹, Ryuta Tsuchiya², Toshiyuki Mine², Digh Hisamoto², Hiroyuki Mizuno², Jun Yoneda¹, Tetsuo Kodera¹ (1.Tokyo Tech, 2.R&D Group, Hitachi Ltd)

Keywords:

Semiconductor quantum dot,Pauli spin blockade,Spin orbit coupling

Pauli spin blockage (PSB) in the spin-state readout of silicon spin qubits is problematic, which is lifted by spin-orbit interactions (SOC). In this study, to investigate the effect of SOC on PSB, we measured the magnetic field dependence of charge transitions (ICTs) of p-type silicon double qubits using a gate-sensing technique. The results show that different magnetic field dependence appears in each ICT, suggesting different spin states and SOC magnitudes. Based on these results, we will discuss the effect of SOC on PSB lifting.