Wang, YuSantiago-Avilés, Jorge J2023-05-222023-05-222006-09-212011-06-23https://repository.upenn.edu/handle/20.500.14332/33821A highly disordered pregraphitic carbon nanofiber with the product of its quasi-Fermi wave vector and mean free path close to 1 was fabricated using electrospinning technique. Strong localization made the conductivity vary with temperature as ln σ ∝ T−1/2 from 300 to 5 K, suggesting variable range hopping as the conductivity mechanism, and resulted in a large negative magnetoresistance from 300 K down to 1.9 K that can still be quantitatively described using weak localization and electron interaction models.EngineeringArticle