MESOSCOPIC PHYSICS and QUANTUM COMPUTING
Interactions at milli-Kelvin Temperatures and
Ultra-Sensitive Detectors of Far-IR Radiation
Understanding of the electron-phonon interaction in disordered and low-dimensional conductors is crucial for both fundamental research and electronic device applications. We carry out systematic measurements of the electron-phonon scattering time in thin-film metal structures by means of hot-electron experiments at milli-Kelvin temperatures. The applied aspects of this research involve the development of ultra-sensitive hot-electron detectors of submillimeter and far-infra-red electromagnetic radiation for the deep-space NASA missions (in collaboration with the JePropulsion Lab).
J. Wei, D. Olaya, B.S. Karasik, S.V. Pereverzev, A.V. Sergeev, and M.E. Gershenson, “Ultra-Sensitive Hot-Electron Nanobolometers for Terahertz Astrophysics”, Nature Nanotechnology 3, 496-500 (2008).
B. S. Karasik, A. V. Sergeyev, D. Olaya, J. Wei, M. E. Gershenson, J. H. Kawamura, and W. R. McGrath, “A Photon Counting Hot-Electron Bolometer for Space THz Spectroscopy” Proc. 16th Int.Symp. on Space Terahertz Technol., May 2-4, 2005, Gothenburg, Sweden, pp. 543-548
A. V. Sergeev, V. V. Mitin, B. S. Karasik, and M. E. Gershenson, Superconducting nanosensors with mesoscopic number of quasiparticles, Physica E 19, 173-177 (2003).
M. E. Gershenson, D. Gong, T. Sato, B. S. Karasik, and A. V. Sergeev. Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures. Appl. Phys. Lett. 79, 2049 (2001).