Electron-Spin-Echo Envelope Modulation

Rowan, L. G.; Hahn, E. L.; Mims, W. B.

doi:10.1103/physrev.137.a61

Cited by 346 publications

(217 citation statements)

References 11 publications

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“…4(d). This level splitting causes reporter spin-echo modulation at frequencies ω þ and ω − , with the modulation depth scaling as 2bω n =ω þ ω − [24]. When the proton Larmor frequency ω n FIG.…”

mentioning

confidence: 99%

“…The hyperfine interaction between them can be described by the Hamiltonian H ¼ ℏaJ z I z þ ℏbJ z I x , where J is the spin operator of the reporter spin, I is the nuclear spin operator, and the z axis is along the applied magnetic field [19,24]. This Hamiltonian can be interpreted as an effective hyperfine field, created by the reporter spin at the site of the proton spin [ Fig.…”

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confidence: 99%

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Magnetic Resonance Detection of Individual Proton Spins Using Quantum Reporters

et al. 2014

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confidence: 99%

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confidence: 99%

Magnetic Resonance Detection of Individual Proton Spins Using Quantum Reporters

et al. 2014

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“…The precession of the nuclear spin about the resultant nuclear precession field will then induce a change in the field at the site of S. This acts as a field modulation, causing a slight difference in the precession frequency of the electron spin about the external magnetic field B. Such a field modulation is known to have an effect on the ESE spectrum which can be detected by ESEEM [23]. From ESEEM, the nuclear Zeeman frequency can be directly deduced in a similar way as in electron nuclear double resonance (ENDOR) experiments [24].…”

Section: Resultsmentioning

confidence: 99%

“…The doublets with anisotropic splitting show a large variation in the line intensity and their forbidden lines were detected. This is typical for a dipolar interaction between two separated spins S=1/2 and I=1/2 [23]. …”

Section: Resultsmentioning

confidence: 99%

Magnetic resonance identification of hydrogen at a zinc vacancy in ZnO

Són

Isoya

Ivanov

et al. 2013

J. Phys.: Condens. Matter

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Hydrogen (H) at a zinc vacancy (V Zn ) in ZnO is identified by electron paramagnetic resonance (EPR) and electron spin echo envelope modulation (ESEEM). In ZnO irradiated by 2 MeV electrons, a doublet EPR spectrum, labelled S1, was observed. The doublet structure and the accompanied weak satellites are shown to be the allowed and forbidden lines of the hyperfine structure due to the dipolar interaction between an electron spin S=1/2 and a nuclear spin I=1/2 of 1 H located at a V Zn . The involvement of a single H atom in the S1 defect is further confirmed by the observation of the nuclear Zeeman frequency of 1 H in ESEEM experiments. We show that at a V Zn , H prefers making a short O-H bond with one O neighbour and is off the substitutional site, forming a low symmetry C 1 defect. In this partly H passivated V Zn , the unpaired electron localizes on the p orbital of another O neighbour of V Zn , and not on H.

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“…2 the probe spin undergoes a spin-echo sequence induced by pulses on resonance with the transition between the states |0 and |1 before being measured. For any given evolution of the environment, the signal can then be calculated from S(t) = [1 + S(t)]/2, with [15,16]:…”

Section: The Environment-assisted Metrology Schemementioning

confidence: 99%

Environment-assisted metrology with spin qubits

et al. 2012

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We investigate the sensitivity of a recently proposed method for precision measurement [Phys. Rev. Lett. 106, 140502 (2011)], focusing on an implementation based on solid-state spin systems. The scheme amplifies a quantum sensor response to weak external fields by exploiting its coupling to spin impurities in the environment. We analyze the limits to the sensitivity due to decoherence and propose dynamical decoupling schemes to increase the spin coherence time. The sensitivity is also limited by the environment spin polarization; therefore, we discuss strategies to polarize the environment spins and present a method to extend the scheme to the case of zero polarization. The coherence time and polarization determine a figure of merit for the environment's ability to enhance the sensitivity compared to echo-based sensing schemes. This figure of merit can be used to engineer optimized samples for high-sensitivity nanoscale magnetic sensing, such as diamond nanocrystals with controlled impurity density.

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Electron-Spin-Echo Envelope Modulation

Cited by 346 publications

References 11 publications

Magnetic Resonance Detection of Individual Proton Spins Using Quantum Reporters

Magnetic Resonance Detection of Individual Proton Spins Using Quantum Reporters

Magnetic resonance identification of hydrogen at a zinc vacancy in ZnO

Environment-assisted metrology with spin qubits

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