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Zhang, W. (author), Khosropanah, P. (author), Gao, J.R. (author), Bansal, T. (author), Klapwijk, T.M. (author), Miao, W. (author), Shi, S.C. (author)
We report the measured sensitivities of a superconducting NbN hot electron bolometer (HEB) heterodyne receiver at 5.25 THz. Terahertz (THz) radiation is quasioptically coupled to a HEB mixer with a lens and a spiral antenna. Using a measurement setup with black body calibration sources and a beam splitter in vacuo, and an antireflection coated...
journal article 2010
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Kalmanovitz, N.R. (author), Hoxha, I. (author), Jin, Y. (author), Vitkalov, S.A. (author), Sarachik, M.P. (author), Larkin, I.A. (author), Klapwijk, T.M. (author) journal article 2008
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Smit, G.D.J. (author), Rogge, S. (author), Klapwijk, T.M. (author)
We have measured electrical transport across epitaxial, nanometer-sized metal–semiconductor interfaces by contacting CoSi2 islands grown on Si(111) with the tip of a scanning tunneling microscope. The conductance per unit area was found to increase with decreasing diode area. Indeed, the zero-bias conductance was found to be ? 104 times larger...
journal article 2002
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