Q-Bits on Assembled Hybrid Materials (Molecular Design of Organically Modified Qubits?)
Abstract
Organically modified qubits (OMQs) were designed to pertain ordered arrangement of spins and provide controllability on electronic spin states in qubits via external stimuli. OMQs with three different structural groups were synthesized: 1) metalophthalocyanines with different ligands 2)luminescent organic radicals (LORs), and 3) conjugated polymer magnets. These OMQs were oriented vertically on a 2D surface, to modulate the electronic properties of the surface against the spin direction. The ligand on the metalophthalocyanines was critical to achieve a large magneto resistance ratio (MR). Thus a thioalkyl ligand of the Tb(Pc2)(SR8) showed the highest MR at room temperature, indicating that it could provide high tunability in electron spins. The end-on structured LORs showed large MR, which is much larger than those of the reported materials. The end-on oriented PEDOTs on graphene showed a high degree of crystallinity and free-electron-like charge transport properties with an enhanced Hall mobility, which allowed modulation of TE properties via external stimuli. Taking advantage of graphene functionality, thermoelectric properties were largely modulated via external magnetic field as a giant magneto thermoelectric effect of ~-73.6% and See beck coefficient of -49% at 298 K. This result provides a unique tool for a multifunctional electron spintronics. In these OMQs at the molecular level, the origin of the magnetism could be from both orbital and spin angular momentums of a molecule or polymer rod, which is placed in a ligand field. Thus further research on robust qubits based on OMQs could establish the optimum spin-orbit coupling and their electro-optical teleportation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 19, 2022
- Accession Number
- AD1191608
Entities
People
- Eunkyoung Kim
Organizations
- Yonsei University