SUMMARY
The discussion centers on the Hubbard U values for graphene and single-walled carbon nanotubes (SWCNT). According to PhysRevLett.106,236805 (2011), graphene has a Hubbard U of 9.3 eV, while PRB 55-R11973 (1997) indicates that the nanotube's U is defined as U=u/N. The values discussed reveal that graphene exhibits a U of 4.6 eV and SWCNT has a U of approximately 7 eV, both of which are smaller than W, indicating that neither material qualifies as a Hubbard U system.
PREREQUISITES
- Understanding of Hubbard U in condensed matter physics
- Familiarity with graphene and carbon nanotube properties
- Knowledge of the significance of energy values in quantum systems
- Basic comprehension of scientific literature and research papers
NEXT STEPS
- Research the implications of Hubbard U values in quantum materials
- Explore the properties of graphene and SWCNT in detail
- Investigate the significance of energy values in electronic structure theory
- Study the methodologies used in PhysRevLett and PRB publications
USEFUL FOR
Physicists, materials scientists, and researchers focused on quantum materials and their electronic properties will benefit from this discussion.