Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Maranowski, K."'
Autor:
Sherwin, M. S., Cates, C., Serapiglia, B., Dora, Y., Williams, J. B., Maranowski, K., Gossard, A. C., McGrath, W. R.
Publikováno v:
Proceedings of Far-IR, Submm, and mm Detector Technology Workshop, Monterey, CA (2002)
At present, nearly quantum-limited heterodyne receivers for Terahertz (THz) frequencies require cooling to temperatures below 4K. We are working to build semiconductor-based "tunable antenna-coupled intersubband terahertz" (TACIT) heterodyne mixers f
Externí odkaz:
http://arxiv.org/abs/1909.10664
Autor:
LeRoy, B. J., Bleszynski, A. C., Aidala, K. E., Westervelt, R. M., Kalben, A., Heller, E. J., Shaw, S. E. J., Maranowski, K. D., Gossard, A. C.
Publikováno v:
Phys. Rev. Lett., 94 126801 (2005)
An imaging interferometer was created in a two-dimensional electron gas by reflecting electron waves emitted from a quantum point contact (QPC) with a circular mirror. Images of electron flow obtained with a scanning probe microscope at liquid He tem
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502544
Autor:
Heller, E. J., Aidala, K. E., LeRoy, B. J., Bleszynski, A. C., Kalben, A., Westervelt, R. M., Maranowski, K. D., Gossard, A. C.
A novel formal equivalence between thermal averages of coherent properties (e.g. conductance), and time averages of a single wavepacket arises for Fermi gasses and certain geometries. In the case of one open channel in a quantum point contact (QPC),
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409453
Autor:
Harris, J. G. E., Knobel, R., Maranowski, K. D., Gossard, A. C., Samarth, N., Awschalom, D. D.
We find that the damping of micromechanical cantilevers is sensitive to the relaxation dynamics of paramagnetic ions contained within the levers. We measure cantilevers containing paramagnetic Mn ions as a function of temperature, magnetic field, and
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303489
Autor:
LeRoy, B. J., Bleszynski, A. C., Topinka, M. A., Westervelt, R. M., Shaw, S. E. J., Heller, E. J., Maranowski, K. D., Gossard, A. C.
Publikováno v:
Physica E, 18 (1-3) 163 (2003)
We measure the energy distribution of electrons passing through a two-dimensional electron gas using a scanning probe microscope. We present direct spatial images of coherent electron wave flow from a quantum point contact formed in a GaAs/AlGaAs two
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208234
Autor:
LeRoy, B. J., Bleszynski, A. C., Topinka, M. A., Westervelt, R. M., Shaw, S. E. J., Heller, E. J., Maranowski, K. D., Gossard, A. C.
Images of electron flow through a two-dimensional electron gas from a quantum point contact (QPC) can be obtained at liquid He temperatures using scanning probe microscopy (SPM). A negatively charged SPM tip depletes the electron gas immediately belo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208194
We have developed a novel system consisting of a superconducting single-electron transistor (S-SET) coupled to a two-dimensional electron gas (2DEG), for which the dissipation can be tuned in the immediate vicinity of the S-SET. Within linear respons
Externí odkaz:
http://arxiv.org/abs/cond-mat/0204287
We have investigated charge transport processes in a superconducting single-electron transistor (S-SET) fabricated in close proximity to a two-dimensional electron gas (2DEG) in a GaAs/AlGaAs heterostructure. The macroscopic bonding pads of the S-SET
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110093
Autor:
Topinka, M. A., LeRoy, B. J., Westervelt, R. M., Shaw, S. E. J., Fleischmann, R., Heller, E. J., Maranowski, K. D., Gossard, A. C.
Publikováno v:
Nature 410, 183 (2001)
Semiconductor nanostructures based on two dimensional electron gases (2DEGs) have the potential to provide new approaches to sensing, information processing, and quantum computation. Much is known about electron transport in 2DEG nanostructures and m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010348
Autor:
Woodside, Michael T., Vale, Chris, McEuen, Paul L., Kadow, C., Maranowski, K. D., Gossard, A. C.
We use an atomic force microscope tip as a local gate to study the scattering between edge channels in a 2D electron gas in the quantum Hall regime. The scattering is dominated by individual, microscopic scattering centers, which we directly image he
Externí odkaz:
http://arxiv.org/abs/cond-mat/0002391