Presentation Information
[16p-PA7-30]Study of magnetoconductivity in dopant molecule-2D material hybrids
〇Mao Xu1, Hikaru Okuma1, Kazunori Ueno1, Daisuke Kiriya1 (1.Univ. of Tokyo)
Keywords:
Transition metal dichalcogenides (TMDCs),Magnetotransport,Spintronics
Spintronics applications that use spin rather than charge show promise for further miniaturization, low power consumption, and ultrafast speeds in 2D material-based devices due to reduced or eliminated Joule heating. In this context, manipulating the spin of electrons in these thin materials is crucial for the development of practical spintronics. Approaches utilizing spin-orbit coupling (SOC) rather than external magnetic fields are considered an effective and promising strategy, as the latter are not precisely controllable. Here, with the aid of robust molecular doping technology, a hybrid system integrating a molecular dopant (BV: benzyl viologen) and 2D materials (WSe2) is devised. This creates a platform where strong spin-orbit coupling (SOC) can arise from the hybrid interface with highly broken inversion symmetry. Furthermore, metal-oxide-semiconductor field-effect transistors (MOSFETs) based on bulk WSe2 interfacing with a BV film were fabricated to study quantum corrections in the hybrid system and evaluate the strength of the spin-orbit coupling (SOC).