Suppression of decoherence in a graphene monolayer ring

Suppression of decoherence in a graphene monolayer ring

The influence of high magnetic fields on coherent transport is investigated. A monolayer graphene quantum ring is fabricated and the Aharonov-Bohm effect is observed. For increased magnitude of the magnetic field, higher harmonics appear. This phenomenon is attributed to an increase of the phase coh...

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Veröffentlicht in:Applied physics letters 2014-08, Vol.105 (8)
Hauptverfasser: Smirnov, D., Rode, J. C., Haug, R. J.
Format: Artikel
Sprache:eng
Schlagworte:
AHARONOV-BOHM EFFECT
Applied physics
COHERENCE LENGTH
Coherent scattering
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
GRAPHENE
HARMONICS
Higher harmonics
MAGNETIC FIELDS
Monolayers
Phase coherence
QUANTUM DECOHERENCE
REDUCTION
RINGS
SCATTERING
SPIN FLIP
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Beschreibung
Zusammenfassung:The influence of high magnetic fields on coherent transport is investigated. A monolayer graphene quantum ring is fabricated and the Aharonov-Bohm effect is observed. For increased magnitude of the magnetic field, higher harmonics appear. This phenomenon is attributed to an increase of the phase coherence length due to reduction of spin flip scattering.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4894471