Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Humphreys, R. G."'
We have investigated the nonlinear microwave properties of electron-beam coevaporated YBaCuO films on MgO, using stripline resonators at 2.3 GHz and temperatures 1.7-80 K. The oxygen content of the films ranged from strongly underdoped to overdoped.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208285
Autor:
Hein, M. A., Getta, M., Kreiskott, S., Moenter, B., Piel, H., Oates, D. E., Hirst, P. J., Humphreys, R. G., Lee, H. N., Moon, S. H.
Publikováno v:
Physica C 372-376, pp. 571-577 (2002)
We describe and analyze selected surface impedance data recently obtained by different groups on cuprate, ruthenate and diboride superconducting films on metallic and dielectric substrates for fundamental studies and microwave applications. The discu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0111400
Publikováno v:
Appl. Phys. Lett., vol. 18, issue 3, p. 228, 4. February 2002
We have investigated the nonlinear surface impedance and two-tone intermodulation distortion of nine epitaxial YBa2Cu3O7-d films on MgO substrates, using stripline resonators, at frequencies f=2.3-11.2GHz and temperatures T=1.7K-Tc. The power dissipa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108346
We have investigated the anomalous nonlinear microwave response of epitaxial electron-beam coevaporated YBa2Cu3O7-x films on MgO. The power and temperature dependent surface impedance and two-tone intermodulation distortion were measured in stripline
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105613
Autor:
Kharel, A. P., Velichko, Anton V., Powell, J. R., Porch, A., Lancaster, M. J., Humphreys, R. G.
Publikováno v:
Published in Phys.Rev. B 58, 11189-11192 (1998)
Striking features have been found in the nonlinear microwave (8 GHz) surface impedance $Z_s=R_s + jX_s$ of high-quality YBaCuO thin films with comparable low power characteristics [$R_{res}\sim 35--60 \mu\Omega$ and $\lambda_L(15 K)\sim 130--260 nm$]
Externí odkaz:
http://arxiv.org/abs/cond-mat/9904137
Autor:
Kharel, A. P., Soon, K. H., Powell, J. R., Porch, A., Lancaster, M. J., Velichko, A. V., Humphreys, R. G.
We have carried out non-linear microwave (8 GHz) surface impedance measurements of three YBaCuO thin films in dc magnetic fields $H_{dc}$ (parallel to c axis) up to 12 mT using a coplanar resonator technique. In zero dc field the three films, deposit
Externí odkaz:
http://arxiv.org/abs/cond-mat/9903309
Autor:
Berlouis, L. E. A., Peter, L. M., Astles, M. G., Gough, J., Humphreys, R. G., Irvine, S. J. C., Steward, V.
Publikováno v:
Journal of Applied Physics; 12/1/1987, Vol. 62 Issue 11, p4518, 5p, 1 Chart, 5 Graphs
Publikováno v:
Journal of Applied Physics; 6/1/1996, Vol. 79 Issue 11, p8783, 9p, 2 Diagrams, 2 Charts, 5 Graphs
Publikováno v:
Immunology. Jul90, Vol. 70 Issue 3, p398-404. 7p.
Autor:
Hedges, S. J., Humphreys, R. G.
Publikováno v:
1994 24th European Microwave Conference; 1994, Issue 1, p517-521, 5p