136 citations · 632 across the 14 of their papers we have counts for
14 papers
Formation of a lateral p-n junction light-emitting diode on an n-type high-mobility GaAs/AlGaAs heterostructure
C. P. Dobney, A. Nasir, P. See +5
We have fabricated a device which includes two lateral p-n junctions on an n-type GaAs/AlGaAs heterostructure. A section of the n-type material has been converted…
Robust operation of a GaAs tunable barrier electron pump
S. P. Giblin, M. -H. Bae, N. Kim +2
We demonstrate the robust operation of a gallium arsenide tunable-barrier single-electron pump operating with 1 part-per-million accuracy at a temperature of ~K and a pumping…
Rectification in mesoscopic AC-gated semiconductor devices
S. P. Giblin, M. Kataoka, J. D. Fletcher +6
We measure the rectified dc currents resulting when a 3-terminal semiconductor device with gate-dependent conductance is driven with an ac gate voltage. The rectified currents exhi…
High-resolution error detection in the capture process of a single-electron pump
S. P. Giblin, P. See, A. Petrie +6
The dynamic capture of electrons in a semiconductor quantum dot (QD) by raising a potential barrier is a crucial stage in metrological quantized charge pumping. In this work, we us…
Thermal-error regime in high-accuracy gigahertz single-electron pumping
R. Zhao, A. Rossi, S. P. Giblin +5
Single-electron pumps based on semiconductor quantum dots are promising candidates for the emerging quantum standard of electrical current. They can transfer discrete charges with…
Ultrafast Voltage Sampling using Single-Electron Wavepackets
N. Johnson, J. D. Fletcher, D. A. Humphreys +8
We demonstrate an ultrafast voltage sampling technique using a stream of electron wavepackets. Electrons are emitted from a single-electron pump and travel through electron wavegui…
Phonon emission and arrival times of electrons from a single-electron source
C. Emary, A. Dyson, Sungguen Ryu +2
In recent charge-pump experiments, single electrons are injected into quantum Hall edge channels at energies significantly above the Fermi level. We consider here the relaxation of…
Clock-controlled emission of single-electron wavepackets in a solid-state circuit
J. D. Fletcher, M. Kataoka, H. Howe +8
We demonstrate the transmission of single electron wavepackets from a clock-controlled source through an empty high-energy edge channel. The quantum dot source is loaded with singl…
Gigahertz quantized charge pumping in graphene quantum dots
M. R. Connolly, K. L. Chiu, S. P. Giblin +8
Single electron pumps are set to revolutionize electrical metrology by enabling the ampere to be re-defined in terms of the elementary charge of an electron. Pumps based on lithogr…
Stabilization of single-electron pumps by high magnetic fields
J. D. Fletcher, M. Kataoka, S. P. Giblin +8
We study the effect of perpendicular magnetic fields on a single-electron system with a strongly time-dependent electrostatic potential. Continuous improvements to the current quan…
Single- and few-electron dynamic quantum dots in a perpendicular magnetic field
S. J. Wright, A. L. Thorn, M. D. Blumenthal +9
We present experimental studies of the current pumped through a dynamic quantum dot over a wide range of magnetic fields. At low fields we observe repeatable structure indicating i…
Coulomb blockade of tunnelling through compressible rings formed around an antidot: an explanation for Aharonov-Bohm oscillations
M. Kataoka, C. J. B. Ford, G. Faini +3
We consider single-electron tunnelling through antidot states using a Coulomb-blockade model, and give an explanation for h/2e Aharonov-Bohm oscillations, which are observed experi…
Detection of Coulomb Charging around an Antidot
M. Kataoka, C. J. B. Ford, G. Faini +5
We have detected oscillations of the charge around a potential hill (antidot) in a two-dimensional electron gas as a function of a perpendicular magnetic field B. The field confine…
Detection of Coulomb Charging around an Antidot in the Quantum Hall Regime
M. Kataoka, C. J. B. Ford, G. Faini +5
We have detected oscillations of the charge around a potential hill (antidot) in a two-dimensional electron gas as a function of a large magnetic field B. The field confines electr…