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Room temperature electrical detection of spin coherence in C60
W Harneit1, C Boehme, S Schaefer
1Institut für Experimentalphysik, Freie Universität Berlin, Arnimalle 14, 14195 Berlin, Germany. harneit@physik.fu-berlin.de
Physical Review Letters
|August 7, 2007
Summary
Researchers demonstrated electrical detection of electron spin motion in fullerene C60 films at room temperature. This spin-to-charge conversion advances readout for fullerene spin qubits.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Information Science
Background:
- Localized electron spins are crucial for quantum information processing.
- Efficient spin-to-charge conversion is needed for scalable quantum readout.
- Fullerene C60 films offer a promising platform for spintronic applications.
Purpose of the Study:
- To experimentally demonstrate electrical detection of coherent spin motion in fullerene C60 films.
- To investigate spin-to-charge conversion mechanisms at room temperature.
- To explore the implications for endohedral fullerene spin qubit readout.
Main Methods:
- Utilized pulsed electrically detected magnetic resonance (pEDMR) spectroscopy.
- Employed vertical photocurrent measurements in Al/C(60)/ZnO device structures.
- Analyzed transient current changes reflecting electron spin Rabi oscillations.
Main Results:
- Successfully demonstrated electrical detection of coherent spin motion in localized electron spins within C60 films.
- Observed transient current changes directly correlated with electron spin Rabi oscillations.
- Established room-temperature operation for spin detection in this system.
Conclusions:
- Coherent spin motion in fullerene C60 films can be electrically detected.
- This electrical readout mechanism is promising for developing robust spin qubits.
- The findings pave the way for advanced spintronic devices and quantum computing applications.
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