講演情報
[8p-PB3-42]Magnetotransport and Interfacial Properties of Dopant Molecule–2D Material Hybrids
〇Mao Xu1, Chen Li1, Daisuke Kiriya1 (1.Univ. of Tokyo)
キーワード：
Transition metal dichalcogenides (TMDCs)
Spintronics applications that exploit electron spin rather than charge offer the potential for further miniaturization, low power consumption, and ultrafast operation in 2D material-based devices owing to reduced or eliminated Joule heating. In this context, the ability to manipulate electron spin in atomically thin materials is crucial for the realization of practical spintronic technologies. Approaches that utilize spin–orbit coupling (SOC), rather than external magnetic fields, are considered particularly attractive because they enable more effective and potentially scalable spin control, whereas magnetic fields are difficult to manipulate with high precision. Here, aided by robust molecular doping technology, we devise a hybrid system that integrates molecular dopants, benzyl viologen (BV) or triphenylphosphine (PPh3), with 2D materials, MoS2 or WSe2. This hybrid architecture creates a platform in which strong SOC can emerge from the highly inversion-symmetry-broken interface between the molecular layer and the 2D semiconductor. Furthermore, metal–oxide–semiconductor field-effect transistors (MOSFETs) based on TMDC materials interfaced with a dopant film were fabricated to investigate quantum corrections in the hybrid system and to evaluate the strength of the resulting SOC.