457 citations · 1.5k across the 22 of their papers we have counts for
22 papers
Symmetry effects on the static and dynamic properties of coupled magnetic oscillators
J P. Patchett, M. Drouhin, J. W. Liao +7
The effect of symmetry on the resonance spectra of antiferromagnetically coupled oscillators has attracted new interest with the discovery of symmetry-breaking induced anti-crossin…
Polarization dependent scattering in cavity optomagnonics
J. A. Haigh, A. Nunnenkamp, A. J. Ramsay
The polarization dependence of magnon-photon scattering in an optical microcavity is reported. Due to the short cavity length, the mode-matching conditions found in previously expl…
Cavity Magnonics
Babak Zare Rameshti, Silvia Viola Kusminskiy, James A. Haigh +7
Cavity magnonics deals with the interaction of magnons - elementary excitations in magnetic materials - and confined electromagnetic fields. We introduce the basic physics and revi…
Sub-pico-liter magneto-optical cavities
J. A. Haigh, R. A. Chakalov, A. J. Ramsay
Microwave-to-optical conversion via ferromagnetic magnons has so-far been limited by the optical coupling rates achieved in mm-scale whispering gallery mode resonators. Towards ove…
Large dispersive interaction between a CMOS double quantum dot and microwave photons
David J. Ibberson, Theodor Lundberg, James A. Haigh +11
We report fast charge state readout of a double quantum dot in a CMOS split-gate silicon nanowire transistor via the large dispersive interaction with microwave photons in a lumped…
Fast gate-based readout of silicon quantum dots using Josephson parametric amplification
S. Schaal, I. Ahmed, J. A. Haigh +12
Spins in silicon quantum devices are promising candidates for large-scale quantum computing. Gate-based sensing of spin qubits offers compact and scalable readout with high fidelit…
Low-impedance superconducting microwave resonators for strong coupling to small magnetic mode volumes
Lauren McKenzie-Sell, Junyu Xie, Chang-Min Lee +3
Recent experiments on strongly coupled microwave and ferromagnetic resonance modes have focused on large volume bulk crystals such as yttrium iron garnet, typically of millimeter-s…
Low-temperature tunable radio-frequency resonator for sensitive dispersive readout of nanoelectronic devices
David J. Ibberson, Lisa A. Ibberson, Geoff Smithson +3
We present a sensitive, tunable radio-frequency resonator designed to detect reactive changes in nanoelectronic devices down to dilution refrigerator temperatures. The resonator in…
Primary thermometry of a single reservoir using cyclic electron tunneling in a CMOS transistor
Imtiaz Ahmed, Anasua Chatterjee, Sylvain Barraud +3
Temperature is a fundamental parameter in the study of physical phenomena. At the nanoscale, local temperature differences can be harnessed to design novel thermal nanoelectronic d…
Selection rules for cavity-enhanced Brillouin light scattering from magnetostatic modes
J. A. Haigh, N. J. Lambert, S. Sharma +3
We experimentally identify the magnetostatic modes active for Brillouin light scattering in the optical whispering gallery modes of a yttrium iron garnet sphere. Each mode is ident…
Radio-frequency capacitive gate-based sensing
Imtiaz Ahmed, James A. Haigh, Simon Schaal +8
Developing fast, accurate and scalable techniques for quantum state readout is an active area in semiconductor-based quantum computing. Here, we present results on dispersive sensi…
Triple-resonant Brillouin light scattering in magneto-optical cavities
J. A. Haigh, A. Nunnenkamp, A. J. Ramsay +1
An enhancement in Brillouin light scattering of optical photons with magnons is demonstrated in magneto-optical whispering gallery mode resonators tuned to a triple resonance point…
Efficient conversion of light to charge and spin in Hall-bar microdevice
L. Nádvorník, J. A. Haigh, K. Olejník +4
We report an experimental demonstration of a local amplification of the spin Hall voltage using an expanding depletion zone at a pn-junction in GaAs/AlGaAs Hall-bar microdevices. I…
Cavity mediated coherent coupling of magnetic moments
N. J. Lambert, J. A. Haigh, S. Langenfeld +2
We demonstrate the long range strong coupling of magnetostatic modes in spatially separated ferromagnets mediated by a microwave frequency cavity. Two spheres of yttrium iron garne…
Dispersive read-out of ferromagnetic resonance for strongly coupled magnons and microwave photons
J. A. Haigh, N. J. Lambert, A. C. Doherty +1
We demonstrate the dispersive measurement of ferromagnetic resonance in a yttrium iron garnet sphere embedded within a microwave cavity. The reduction in the longitudinal magnetiza…
Identification of spin wave modes strongly coupled to a co-axial cavity
N. J. Lambert, J. A. Haigh, A. J. Ferguson
We demonstrate, at room temperature, the strong coupling of the fundamental and non-uniform magnetostatic modes of an yttrium iron garnet (YIG) ferrimagnetic sphere to the electrom…
Anisotropic magneto-capacitance in ferromagnetic-plate capacitors
J. A. Haigh, C. Ciccarelli, A. C. Betz +4
The capacitance of a parallel plate capacitor can depend on applied magnetic field. Previous studies have identified capacitance changes induced via classical Lorentz force or spin…
Optical spin transfer torque driven domain wall motion in ferromagnetic semiconductor
A. J. Ramsay, P. E. Roy, J. A. Haigh +6
We demonstrate optical manipulation of the position of a domain wall in a dilute magnetic semiconductor, GaMnAsP. Two main contributions are identified. Firstly, photocarrier spin…
Piezoelectric strain induced variation of the magnetic anisotropy in a high Curie temperature (Ga,Mn)As sample
A. Casiraghi, A. W. Rushforth, J. Zemen +5
We show that effective electrical control of the magnetic properties in the ferromagnetic semiconductor (Ga,Mn)As is possible using the strain induced by a piezoelectric actuator e…
Strain control of magnetic anisotropy in (Ga,Mn)As microbars
C. King, J. Zemen, K. Olejník +8
We present an experimental and theoretical study of magnetocrystalline anisotropies in arrays of bars patterned lithographically into (Ga,Mn)As epilayers grown under compressive la…
A low field technique for measuring magnetic and magneto-resistance anisotropy coefficients applied to (Ga,Mn)As
J A Haigh, A W Rushforth, C S King +4
We demonstrate a simple, low cost, magneto-transport method for rapidly characterizing the magnetic anisotropy and anisotropic magneto-resistance (AMR) of ferromagnetic devices wit…
Manipulation of the magnetic configuration of (Ga,Mn)As nanostructures
J. A. Haigh, M. Wang, A. W. Rushforth +5
We have studied the magnetic reversal of L-shaped nanostructures fabricated from (Ga,Mn)As. The strain relaxation due to the lithographic patterning results in each arm having a un…