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 space-charge waves.
| Office Location: | 089 Physics Bldg, Durham, NC 27708 |
| Office Phone: | (919) 660-2560 |
| Email Address: |   |
Teaching (Fall 2018):
- PHYSICS 137S.01, ENERGY IN THE 21ST CENTURY
Synopsis
- Physics 130, TuTh 04:40 PM-05:55 PM
- PHYSICS 137S.02, ENERGY IN THE 21ST CENTURY
Synopsis
- Physics 005, TuTh 04:40 PM-05:55 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 photon-plasmon 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 noise-driven 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. 153-167, Springer International Publishing, Gewerbestr. 11, 6330 Cham, Switzerland, ISBN 9783319765983 [1803.01053], [doi] [abs]
- Ghanta, A; Neu, JC; Teitsworth, S, Fluctuation loops in noise-driven 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 0031-9007 [doi] [abs]
- Bomze, Y; Hey, R; Grahn, HT; Teitsworth, SW, Noise-induced current switching in semiconductor superlattices: observation of nonexponential kinetics in a high-dimensional 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 non-equilibrium systems with state-dependent noise: application to stochastic current switching in semiconductor superlattices (Preprint, 2012) [abs]