Výsledky vyhledávání - "Porfyrakis K"

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High pressure electron spin resonance of the endohedral fullerene $^{15}\mathrm{N@C}_{60}$

Autor: Harding, R. T., Folli, A., Zhou, J., Briggs, G. A. D., Porfyrakis, K., Laird, E. A.

We measure the electron spin resonance spectrum of the endohedral fullerene molecule $^{15}\mathrm{N@C}_{60}$ at pressures ranging from atmospheric pressure to 0.25 GPa, and find that the hyperfine coupling increases linearly with pressure. We presen

Externí odkaz: http://arxiv.org/abs/1712.05991

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The spin resonance clock transition of the endohedral fullerene $^{15}\mathrm{N@C}_{60}$

Autor: Harding, R. T., Zhou, S., Zhou, J., Lindvall, T., Myers, W. K., Ardavan, A., Briggs, G. A. D., Porfyrakis, K., Laird, E. A.

Publikováno v: Phys. Rev. Lett. 119, 140801 (2017)

The endohedral fullerene $^{15}\mathrm{N@C}_{60}$ has narrow electron paramagnetic resonance lines which have been proposed as the basis for a condensed-matter portable atomic clock. We measure the low-frequency spectrum of this molecule, identifying

Externí odkaz: http://arxiv.org/abs/1705.04817

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Hyperfine structure of Sc@C82 from ESR and DFT

Autor: Morley, G. W., Herbert, B. J., Lee, S. M., Porfyrakis, K., Dennis, T. J. S., Nguyen-Manh, D., Scipioni, R., van Tol, J., Horsfield, A. P., Ardavan, A., Pettifor, D. G., Green, J. C., Briggs, G. A. D.

Publikováno v: Nanotechnology 16, 2469 (2005)

The electron spin g- and hyperfine tensors of the endohedral metallofullerene Sc@C82 are anisotropic. Using electron spin resonance (ESR) and density functional theory (DFT), we can relate their principal axes to the coordinate frame of the molecule,

Externí odkaz: http://arxiv.org/abs/0809.2029

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Dynamic nuclear polarization with simultaneous excitation of electronic and nuclear transitions

Autor: Morley, G. W., Porfyrakis, K., Ardavan, A., van Tol, J.

Publikováno v: Appl. Magn. Reson. 34, 347-353 (2008)

Dynamic nuclear polarization transfers spin polarization from electrons to nuclei. We have achieved this by a new method, simultaneously exciting transitions of electronic and nuclear spins. The efficiency of this technique improves with increasing m

Externí odkaz: http://arxiv.org/abs/0805.4357

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Pauli spin blockade in carbon nanotube double quantum dots

Autor: Buitelaar, M. R., Fransson, J., Cantone, A. L., Smith, C. G., Anderson, D., Jones, G. A. C., Ardavan, A., Khlobystov, A. N., Watt, A. A. R., Porfyrakis, K., Briggs, G. A. D.

We report Pauli spin blockade in an impurity defined carbon nanotube double quantum dot. We observe a pronounced current suppression for negative source-drain bias voltages which is investigated for both symmetric and asymmetric coupling of the quant

Externí odkaz: http://arxiv.org/abs/0805.4212

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