
Stephen W. Teitsworth, Associate Professor of Physics and CNCS: Center for nonlinear and complex systems and Director of Graduate Studies
Prof. Stephen W. Teitsworth's research centers on experimental, computational, and theoretical studies of deterministic and stochastic nonlinear electronic transport in nanoscale systems. Three particular areas of current interest are: 1) stochastic nonlinear electronic transport phenomena in semiconductor superlattices and tunnel diode arrays; 2) complex bifurcations associated with the deterministic dynamics of electronic transport in negative differential resistance systems; and 3) strategies for stabilizing negative differential resistance systems against the formation of spacecharge waves.
 Contact Info:
Office Location:  089 Physics Bldg, Durham, NC 27708  Office Phone:  (919) 6602560  Email Address:   Teaching (Fall 2018):
 PHYSICS 137S.01, ENERGY IN THE 21ST CENTURY
Synopsis
 Physics 130, TuTh 04:40 PM05:55 PM
 PHYSICS 137S.02, ENERGY IN THE 21ST CENTURY
Synopsis
 Physics 005, TuTh 04:40 PM05:55 PM
 Education:
Ph.D.  Harvard University  1986 
A.M.  Harvard University  1981 
BS  Stanford University  1979 
 Specialties:

Experimental condensed matter physics
Nanoscale/microscale computing systems Nonlinear dynamics and complex systems Nanophysics
 Research Interests: Experimental Condensed Matter Physics
Prof. Stephen W. Teitsworth's current research centers on electronic transport and optoelectronic processes in semiconductor microstructures and nanostructures. Three areas of particular interest are: 1) nonlinear electronic transport in semiconductor superlattices; 2) theoretical and experimental studies of chaotic dynamics associated with nonlinear space charge waves in patterned and bulk semiconductors; 3) optical properties of semiconductor quantum wells, especially photonplasmon effects in structures that incorporate metallic nanoarrays.
 Keywords:
Aluminum • Amplifiers, Electronic • Arsenic • Arsenicals • Electronics • Gallium • Gallium arsenide • Kinetics • Models, Theoretical • Oscillometry • Photoluminescence • Quantum wells • Semiconductors
 Current Ph.D. Students
(Former Students)
 Postdocs Mentored
 Yuriy Bomze (2010  2011)
 Recent Publications
(More Publications)
 Neu, JC; Ghanta, A; Teitsworth, SW, The Geometry of most probable trajectories in noisedriven dynamical systems,
in Coupled Mathematical Models for Physical and Biological Nanoscale Systems and Their Applications, Springer Proceedings in Mathematics and Statistics, edited by L. L. Bonilla, E. Kaxiras, and R. Melnik,
Springer Proceedings in Mathematics and Statistics, vol. 232
(January, 2018),
pp. 153167, Springer International Publishing, Gewerbestr. 11, 6330 Cham, Switzerland, ISBN 9783319765983 [1803.01053], [doi] [abs]
 Ghanta, A; Neu, JC; Teitsworth, S, Fluctuation loops in noisedriven linear dynamical systems,
Physical Review. E, vol. 95 no. 3
(March, 2017) [doi]
 Dannenberg, PH; Neu, JC; Teitsworth, SW, Steering most probable escape paths by varying relative noise intensities.,
Physical Review Letters, vol. 113 no. 2
(July, 2014),
pp. 020601, American Physical Society, ISSN 00319007 [doi] [abs]
 Bomze, Y; Hey, R; Grahn, HT; Teitsworth, SW, Noiseinduced current switching in semiconductor superlattices: observation of nonexponential kinetics in a highdimensional system.,
Phys Rev Lett, vol. 109 no. 2
(July, 2012),
pp. 026801 [23030192], [doi] [abs]
 M. Heymann, S. W. Teitsworth, and J. Mattingly, Rare transition events in nonequilibrium systems with statedependent noise: application to stochastic current switching in semiconductor superlattices
(Preprint, 2012) [abs]
