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pro vyhledávání: '"Speller S"'
To reduce the impact of charging effects on satellites, cheap and lightweight conductive coatings are desirable. We mimic space-like charging environments in ultra-high vacuum (UHV) chambers during deposition of charges via the electron beam of a sca
Externí odkaz:
http://arxiv.org/abs/2309.01631
Autor:
Voelkner, C., Wendt, M., Lange, R., Ulbrich, M., Gruening, M., Staehlke, S., Nebe, J. B., Barke, I., Speller, S.
Functionality of living cells is inherently linked to subunits with dimensions on the nanoscale. In case of osteoblasts the cell surface plays a particularly important role for adhesion and spreading which are crucial properties with regard to bone i
Externí odkaz:
http://arxiv.org/abs/2011.07850
Autor:
Bahrami, M., Kraft, S., Becker, J., Hartmann, H., Vogler, B., Wardelmann, K., Behle, H., Elemans, J. A. A. W., Barke, I., Speller, S.
Transfer of energy and information through molecule aggregates requires as one important building block anisotropic, cable-like structures. Knowledge on the spatial correlation of luminescence and morphology represents a prerequisite in the understan
Externí odkaz:
http://arxiv.org/abs/1709.06956
Autor:
Figueroa, A. I., Zhang, S. L., Baker, A. A., Chalasani, R., Kohn, A., Speller, S. C., Gianolio, D., Pfleiderer, C., van der Laan, G., Hesjedal, T.
Publikováno v:
Phys. Rev. B 94, 174107 (2016)
We report a study of the strain state of epitaxial MnSi films on Si(111) substrates in the thick film limit (100-500~\AA) as a function of film thickness using polarization-dependent extended x-ray absorption fine structure (EXAFS). All films investi
Externí odkaz:
http://arxiv.org/abs/1611.07736
Autor:
Coldea, A. I., Blake, S. F., Kasahara, S., Haghighirad, A. A., Watson, M. D., Knafo, W., Choi, E. S., McCollam, A., Reiss, P., Yamashita, T., Bruma, M., Speller, S., Matsuda, Y., Wolf, T., Shibauchi, T., Schofield, A. J.
Publikováno v:
npj Quantum Materials volume 4, Article number: 2 (2019)
We investigate the evolution of the Fermi surfaces and electronic interactions across the nematic phase transition in single crystals of FeSe1-xSx using Shubnikov-de Haas oscillations in high magnetic fields up to 45 tesla in the low temperature regi
Externí odkaz:
http://arxiv.org/abs/1611.07424
Publikováno v:
The Journal of Education, 1903 Nov . 5821 (1455), 367-367.
Externí odkaz:
https://www.jstor.org/stable/44064823
Akademický článek
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Autor:
Speller, S. C., Dudin, P., Fitzgerald, S., Hughes, G. M., Kruska, K., Britton, T. B., Krzton-Maziopa, A., Pomjakushina, E., Conder, K., Barinov, A., Grovenor, C. R. M.
Publikováno v:
Phys. Rev. B 90, 024520 (2014)
The superconducting and magnetic properties of phase-separated A$_x$Fe$_{2-y}$Se$_2$ compounds are known to depend on post-growth heat treatments and cooling profiles. This paper focusses on the evolution of microstructure on annealing, and how this
Externí odkaz:
http://arxiv.org/abs/1406.0837
Autor:
Speller, S. C., Britton, T. B., Hughes, G. M., Krzton-Maziopa, A., Pomjakushina, E., Conder, K., Boothroyd, A. T., Grovenor, C. R. M.
Publikováno v:
Supercond. Sci. Technol. 25 (2012) 084023
The interplay between superconductivity, magnetism and crystal structure in iron-based superconductors is a topic of great interest amongst the condensed matter physics community as it is thought to be the key to understanding the mechanisms responsi
Externí odkaz:
http://arxiv.org/abs/1204.5472
Autor:
Weigand, M., Speller, S. C., Hughes, G. M., Rutter, N. A., Lozano-Perez, S., Grovenor, C. R. M., Durrell, J. H.
Publikováno v:
Physical Review B vol 81, art-no 174537 (2010)
We have investigated single grain boundaries (GBs) isolated in coated conductors produced by Metal-Organic Deposition (MOD). When a magnetic field is swept in the film plane, an angle-dependent crossover from boundary to grain limited critical curren
Externí odkaz:
http://arxiv.org/abs/1004.2204