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Electron spin coherence and electron nuclear double resonance of Bi donors in natural Si

George, RE; Witzel, W; Riemann, H; Abrosimov, NV; Notzel, N; Thewalt, MLW; Morton, JJL; (2010) Electron spin coherence and electron nuclear double resonance of Bi donors in natural Si. Phys. Rev. Lett. , 105 (6) , Article 067601. 10.1103/PhysRevLett.105.067601. Green open access

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Abstract

Donors in silicon hold considerable promise for emerging quantum technologies, due to the their uniquely long electron spin coherence times. Bi donors in silicon differ from P and other Group V donors in several significant respects: they have the strongest binding energy (70.98 meV), a large nuclear spin (I = 9/2) and strong hyperfine coupling constant (A = 1475.4 MHz). These larger energy scales allow a detailed test of theoretical models describing the spectral diffusion mechanism that is known to govern the electron spin coherence time (T2e) of P-donors in natural silicon. We report the electron nuclear double resonance spectra of the Bi donor, across the range 200 MHz to 1.4 GHz, and confirm that coherence transfer is possible between electron and nuclear spin degrees of freedom at these higher frequencies.

Type: Article
Title: Electron spin coherence and electron nuclear double resonance of Bi donors in natural Si
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.105.067601
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.105.067601
Language: English
Additional information: © 2010 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1362764
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