384 citations · 1.1k across the 12 of their papers we have counts for
12 papers
Immense magnetic response of exciplex light emission due to correlated spin-charge dynamics
Yifei Wang, Kevser Sahin-Tiras, Nicholas J. Harmon +2
As carriers slowly move through a disordered energy landscape in organic semiconductors, tiny spatial variations in spin dynamics relieve spin blocking at transport bottlenecks or…
Anomalous organic magnetoresistance from competing carrier-spin-dependent interactions with localized electronic and nuclear spins
Y. Wang, N. J. Harmon, K. Sahin-Tiras +2
We describe a new regime for low-field magnetoresistance in organic semiconductors, in which the spin-relaxing effects of localized nuclear spins and electronic spins interfere. Th…
Organic Magnetoelectroluminescence for Room Temperature Transduction between Magnetic and Optical Information
Ferran Macià, Fujian Wang, Nicholas J. Harmon +3
Magnetic and spin-based technologies for data storage and processing pose unique challenges for information transduction to light because of magnetic metals' optical loss, and the…
Including fringe fields from a nearby ferromagnet in a percolation theory of organic magnetoresistance
Nicholas J. Harmon, Ferran Macià, Fujian Wang +3
Random hyperfine fields are essential to mechanisms of low-field magnetoresistance in organic semiconductors. Recent experiments have shown that another type of random field --- fr…
Device-spectroscopy of magnetic field effects in a polyfluorene organic light-emitting diode
T. D. Nguyen, J. Rybicki, Y. Sheng +1
We perform charge-induced absorption and electroluminescence spectroscopy in a polyfluorene organic magnetoresistive device. Our experiments allow us to measure the singlet exciton…
Theory of magnetoresistance based on variable-range hopping in the presence of Hubbard interaction and spin-dynamics
M. Wohlgenannt
We develop a theory of magnetoresistance based on variable-range hopping. An exponentially large, low-field and necessarily positive magnetoresistance effect is predicted in the pr…