Contribution of dielectrics to frequency and noise of NbTiN superconducting resonators (2008)
Barends, R., Hortensius, H. L., Zijlstra, T., Baselmans, J. J. A., Yates, S. J. C., Gao, J. R., ...
We study NbTiN resonators by measurements of the temperature dependent resonance frequency and frequency noise. Additionally, resonators are studied covered with SiOx dielectric layers of various...
Quasiparticle relaxation in optically excited high-Q superconducting resonators (2008)
Barends, R., Baselmans, J. J. A., Yates, S. J. C., Gao, J. R., Hovenier, J. N., Klapwijk, T. M.
The quasiparticle relaxation time in superconducting films has been measured as a function of temperature using the response of the complex conductivity to photon flux. For tantalum and aluminium,...
Fabrication of large NbSi bolometer arrays for CMB applications (2006)
Ukibe, M., Belier, B., Camus, P., Dobrea, C., Dumoulin, L., Fernandez, B., ...
Future cosmic microwave background experiments for high-resolution anisotropy mapping and polarisation detection require large arrays of bolometers at low temperature. We have developed a process to...
Ferromagnetic Properties of ZrZn$_2$ (2005)
Yelland, E. A., Yates, S. J. C., Taylor, O., Griffiths, A., Hayden, S. M., Carrington, A.
The low Curie temperature (T_C approx 28K) and small ordered moment (M_0 approx 0.17 mu_B f.u.^-1) of ZrZn2 make it one of the few examples of a weak itinerant ferromagnet. We report results of...
Superconductivity induced by spark erosion in ZrZn2 (2005)
Yelland, E. A., Hayden, S. M., Yates, S. J. C., Pfleiderer, C., Uhlarz, M., Vollmer, R., ...
We show that the superconductivity observed recently in the weak itinerant ferromagnet ZrZn2 [C. Pfleiderer et al., Nature (London) 412, 58 (2001)] is due to remnants of a superconducting layer...
The ground state of heavily-overdoped non-superconducting La$_{2-x}$Sr$_x$CuO$_4$ (2002)
Nakamae, S., Behnia, K., Mangkorntong, N., Nohara, M., Takagi, H., Yates, S. J. C., ...
We report detailed thermodynamic and transport measurements for non-superconducting La$_{1.7}$Sr$_{0.3}$CuO$_4$. Collectively, these data reveal that a highly-correlated Fermi-liquid ground state...
Heavy quasiparticles in the ferromagnetic superconductor ZrZn2 (2002)
Yates, S. J. C., Santi, G., Hayden, S. M., Meeson, P. J., Dugdale, S. B.
We report a study of the de Haas-van Alphen effect in the normal state of the ferromagnetic superconductor ZrZn2. Our results are generally consistent with an LMTO band structure calculation which...