Broad frequency and amplitude control of vibration in freestanding graphene via scanning tunneling microscopy with calculated dynamic pseudo-magnetic fields

A technique to locally generate mechanical vibrations in freestanding graphene using scanning tunneling microscopy (STM) is presented. The frequency of the mechanical vibrations is tuned over nearly four decades and is centered around 10 Hz. The amplitude of the vibrations also changes over nearly t...

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Veröffentlicht in:	Journal of applied physics 2012-12, Vol.112 (12)
Hauptverfasser:	Xu, P., Schoelz, J. K., Barber, S. D., Ackerman, M. L., Thibado, P. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplitudes Electric potential Graphene Mathematical analysis Scanning Scanning tunneling microscopy Vibration Voltage
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container_title	Journal of applied physics
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description	A technique to locally generate mechanical vibrations in freestanding graphene using scanning tunneling microscopy (STM) is presented. The frequency of the mechanical vibrations is tuned over nearly four decades and is centered around 10 Hz. The amplitude of the vibrations also changes over nearly three decades centered on 1 nm. The oscillating motion is generated in two ways: first, by scanning the STM tip on the surface and second, by scanning the bias voltage on the STM tip. The frequency and amplitude of the displaced freestanding graphene is quantitatively transformed to the frequency and strength of the locally generated pseudo-magnetic field for our specific geometry.
doi_str_mv	10.1063/1.4771874
format	Article
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source	AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection
subjects	Amplitudes Electric potential Graphene Mathematical analysis Scanning Scanning tunneling microscopy Vibration Voltage
title	Broad frequency and amplitude control of vibration in freestanding graphene via scanning tunneling microscopy with calculated dynamic pseudo-magnetic fields
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