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2019

Axion detection with precision frequency metrology

Goryachev, M., McAllister, B. T. & Tobar, M. E., 1 Dec 2019, In : Physics Of The Dark Universe. 26, 100345.

Research output: Contribution to journalArticle

metrology
cavity
electrodynamics
frequency control
electronic control
1 Citation (Scopus)

Broadening frequency range of a ferromagnetic axion haloscope with strongly coupled cavity–magnon polaritons

Flower, G., Bourhill, J., Goryachev, M. & Tobar, M. E., 1 Sep 2019, In : Physics Of The Dark Universe. 25, 100306.

Research output: Contribution to journalArticle

polaritons
frequency ranges
cavity
bandwidth
cavities
2 Citations (Scopus)

Combined Search for a Lorentz-Violating Force in Short-Range Gravity Varying as the Inverse Sixth Power of Distance

Shao, C-G., Chen, Y-F., Tan, Y-J., Yang, S-Q., Luo, J., Tobar, M. E., Long, J. C., Weisman, E. & Kostelecky, V. A., 10 Jan 2019, In : Physical Review Letters. 122, 1, 7 p., 011102.

Research output: Contribution to journalArticle

Electrodynamic improvements to the theory of magnetostatic modes in ferrimagnetic spheres and their applications to saturation magnetization measurements

Krupka, J., Pacewicz, A., Salski, B., Kopyt, P., Bourhill, J., Goryachev, M. & Tobar, M., 1 Oct 2019, In : Journal of Magnetism and Magnetic Materials. 487, 165331.

Research output: Contribution to journalArticle

Magnetostatics
Electrodynamics
magnetostatics
Saturation magnetization
electrodynamics

Experimental implementation of a large scale multipost re-entrant array

Goryachev, M., Jeong, J. & Tobar, M. E., 1 May 2019, In : Applied Physics Express. 12, 5, 4 p., 054002.

Research output: Contribution to journalArticle

Isotopically Pure Silcon-28 Whispering Gallery Mode Resonators: A Host for Narrow Linewidth Spin Ensembles

Tobar, M. E., Bourhill, J., Goryachev, M., Creedon, D., Johnson, B. C. & Jamieson, D., 14 May 2019, 2018 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD 2018. IEEE, Institute of Electrical and Electronics Engineers, p. 41-42 2 p. 8715244. (2018 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD 2018).

Research output: Chapter in Book/Conference paperConference paper

Whispering gallery modes
whispering gallery modes
Linewidth
Q factors
Resonators

Low-Temperature Properties of Whispering-Gallery Modes in Isotopically Pure Silicon-28

Bourhill, J., Goryachev, M., Creedon, D. L., Johnson, B. C., Jamieson, D. N. & Tobar, M. E., 15 Apr 2019, In : Physical Review Applied. 11, 4, 044044.

Research output: Contribution to journalArticle

whispering gallery modes
Q factors
resonators
machining
silicon
electrodynamics
magnetization
induced polarization
polarization
electromagnetism
1 Citation (Scopus)

Probing dark universe with exceptional points

Goryachev, M., McAllister, B. & Tobar, M. E., 1 Jan 2019, In : Physics Of The Dark Universe. 23, 100244.

Research output: Contribution to journalArticle

universe
cavity
cavities
cryogenic temperature
acceleration (physics)
2018
3 Citations (Scopus)
Jahn-Teller effect
Dielectric resonators
Paramagnetic resonance
Anisotropy
resonators
11 Citations (Scopus)
cavities
curves
chirality
harmonic oscillators
coils

Better than Brillouin

Bourhill, J. & Tobar, M., Jun 2018, In : Nature Physics. 14, 6, p. 531-532 2 p.

Research output: Contribution to journalArticle

resonators
acoustics
scattering
interactions
5 Citations (Scopus)

Cavity magnon polaritons with lithium ferrite and three-dimensional microwave resonators at millikelvin temperatures

Goryachev, M., Watt, S., Bourhill, J., Kostylev, M. & Tobar, M. E., 13 Apr 2018, In : Physical Review B. 97, 15, 155129.

Research output: Contribution to journalArticle

Microwave resonators
Lithium
polaritons
Ferrite
ferrites
Open Access
Quartz
SQUIDs
Resonators
quartz
resonators
1 Citation (Scopus)
80 Downloads (Pure)

Next Generation of Phonon Tests of Lorentz Invariance using Quartz BAW Resonators

Goryachev, M., Kuang, Z., Ivanov, E. N., Haslinger, P., Muller, H. & Tobar, M. E., Jun 2018, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 65, 6, p. 991-1000

Research output: Contribution to journalArticle

Open Access
File
Invariance
Quartz
Resonators
invariance
sectors

Novel Resonators for Axion Haloscopes

McAllister, B. T., Goryachev, M. & Tobar, M. E., 1 Jan 2018, Microwave Cavities and Detectors for Axion Research - Proceedings of the 2nd International Workshop. Carosi, G., Rybka, G. & van Bibber, K. (eds.). USA: Springer Science + Business Media, Vol. 211. p. 53-59 7 p.

Research output: Chapter in Book/Conference paperConference paper

resonators
microwaves
cavities
rooms
dark matter

Rigorous ESR spectroscopy of Fe3+ impurity ion with oxygen vacancy in ferroelectric SrTiO3 crystal at 20 mK

Hosain, M. A., Le Floch, J-M., Krupka, J. & Tobar, M. E., 25 Jul 2018, In : Journal of Physics-Condensed Matter. 30, 29, 6 p., 295805.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Stabilized Free-Space Optical Frequency Transfer

Gozzard, D. R., Schediwy, S. W., Stone, B., Messineo, M. & Tobar, M., 29 Aug 2018, In : Physical Review Applied. 10, 2, 024046.

Research output: Contribution to journalArticle

atomic clocks
ground stations
frequency stability
atmospheric turbulence
low Earth orbits

The ORGAN Experiment

McAllister, B. T. & Tobar, M. E., 1 Jan 2018, Microwave Cavities and Detectors for Axion Research - Proceedings of the 2nd International Workshop. Carosi, G., Rybka, G. & van Bibber, K. (eds.). USA: Springer Science + Business Media, Vol. 211. p. 119-125 7 p.

Research output: Chapter in Book/Conference paperConference paper

resonators
methodology
9 Citations (Scopus)

Tunable supermode dielectric resonators for axion dark-matter haloscopes

McAllister, B. T., Flower, G., Tobar, L. E. & Tobar, M. E., 26 Jan 2018, In : Physical Review Applied. 9, 1, 014028.

Research output: Contribution to journalArticle

dark matter
resonators
Bragg reflectors
cavities
cavity resonators

Whispering gallery mode dielectric spectroscopy of SrLaAlO4 at milliKelvin temperatures

Hosain, M. A., Le Floch, J. M., Krupka, J., Bourhill, J. F. & Tobar, M. E., 21 Jun 2018, In : Journal of Applied Physics. 123, 23, 234103.

Research output: Contribution to journalArticle

whispering gallery modes
Q factors
spectroscopy
temperature
microwaves
2017
90 Downloads (Pure)

A stabilized frequency reference transfer system for the square kilometre array

Gozzard, D. R., 2017, (Unpublished)

Research output: ThesisDoctoral Thesis

File
telescopes
Republic of South Africa
theses
field tests
microwave frequencies

Cryogenic optomechanics and the resurgence of the resonant-mass gravitational wave detector

Tobar, M. E., 13 Sep 2017, In : New Journal of Physics. 19, 2 p., 091001.

Research output: Contribution to journalEditorial

Open Access
5 Citations (Scopus)

Determination of low loss in isotopically pure single crystal 28Si at low temperatures and single microwave photon energy

Kostylev, N., Goryachev, M., Bulanov, A. D., Gavva, V. A. & Tobar, M. E., 20 Mar 2017, In : Scientific Reports. 7, 44813.

Research output: Contribution to journalArticle

Open Access
Microwaves
Photons
Optics and Photonics
Temperature
1 Citation (Scopus)

Electromagnetic properties of terbium gallium garnet at millikelvin temperatures and low photon energy

Kostylev, N., Goryachev, M., Bushev, P. & Tobar, M. E., 31 Jul 2017, In : Applied Physics Letters. 111, 5, 052402.

Research output: Contribution to journalArticle

terbium
electromagnetic properties
garnets
gallium
whispering gallery modes
1 Citation (Scopus)

Experiments match simulations in a multiple post reentrant cavity

De Paula, L. A. N., Goryachev, M. & Tobar, M. E., 1 Dec 2017, In : Review of Scientific Instruments. 88, 12, 125104.

Research output: Contribution to journalArticle

cavities
simulation
Experiments
Microwaves
spacing

First search for axions of mass 110 μeV using milliKelvin cooled 26.6 GHz microwave resonator

McAlister, B., Kruger, J., Flower, G., Bourhill, J., Goryachev, M., Parker, S., Ivanov, E. & Tobar, M., 27 Oct 2017, 2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFC 2017 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 179-180 2 p. 8088839

Research output: Chapter in Book/Conference paperConference paper

Microwave resonators
resonators
microwaves
High electron mobility transistors
high electron mobility transistors
91 Downloads (Pure)

Frequency-temperature sensitivity reduction with optimized microwave Bragg resonators

Le Floch, J. M., Murphy, C., Hartnett, J. G., Madrangeas, V., Krupka, J., Cros, D. & Tobar, M. E., 7 Jan 2017, In : Journal of Applied Physics. 121, 1, 014102.

Research output: Contribution to journalArticle

Open Access
File
resonators
microwaves
Q factors
temperature
whispering gallery modes

Glasses: Achieving long phonon lifetimes

Goryachev, M. & Tobar, M. E., 22 Feb 2017, In : Nature Materials. 16, 3, p. 285-286 2 p.

Research output: Contribution to journalComment/debate

5 Citations (Scopus)

Higher order reentrant post modes in cylindrical cavities

McAllister, B. T., Shen, Y., Flower, G., Parker, S. R. & Tobar, M. E., 14 Oct 2017, In : Journal of Applied Physics. 122, 14, 144501.

Research output: Contribution to journalArticle

cavities
tuning
LC circuits
physics
cavity resonators

Improving phonon sector tests of Lorentz Invariance

Goryachev, M., Ivanov, E. N., Tobar, M. E., Haslinger, P. & Muller, H., 27 Oct 2017, 2017 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFC 2017 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 104-105 2 p. 8088814

Research output: Chapter in Book/Conference paperConference paper

Invariance
invariance
sectors
Quartz
quartz

Indirect methods to control population distribution in a large spin system

Zhao, L., Goryachev, M., Bourhill, J. & Tobar, M. E., 1 Mar 2017, In : New Journal of Physics. 19, 3, 033016.

Research output: Contribution to journalArticle

Open Access
photons
nonequilibrium thermodynamics
whispering gallery modes
excitation
pumping
1 Citation (Scopus)

Low-temperature microwave properties of biaxial YAlO3

Carvalho, N. C., Goryachev, M., Krupka, J., Bushev, P. & Tobar, M. E., 27 Jul 2017, In : Physical Review B: Covering condensed matter and materials physics. 96, 4, 7 p., 045141.

Research output: Contribution to journalArticle

Sensitivity characterisation of a parametric transducer for gravitational wave detection through optical spring effect

Carvalho, N. C., Bourhill, J., Tobar, M. E. & Aguiar, O. D., 28 Jul 2017, In : Classical and Quantum Gravity. 34, 17, 175001.

Research output: Contribution to journalArticle

gravitational waves
transducers
spherical antennas
sensitivity
gravitational wave antennas
26 Citations (Scopus)

The ORGAN experiment: An axion haloscope above 15 GHz

McAllister, B. T., Flower, G., Ivanov, E. N., Goryachev, M., Bourhill, J. & Tobar, M. E., Dec 2017, In : Physics Of The Dark Universe. 18, p. 67-72 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Whispering Gallery mode ESR spectroscopy and parameters measurement in single crystal SrLaAlO4 at millikelvin temperature

Hosain, M. A., Le Floch, J. M., Krupka, J. & Tobar, M. E., 1 Aug 2017, In : Journal of Magnetic Resonance. 281, p. 209-216 8 p.

Research output: Contribution to journalArticle

Whispering gallery modes
whispering gallery modes
Paramagnetic resonance
Spectrum Analysis
Single crystals
2016
10 Citations (Scopus)
121 Downloads (Pure)

3D lumped LC resonators as low mass axion haloscopes

Mcallister, B., Parker, S. & Tobar, M., 11 Aug 2016, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 94, 4, p. 042001-1 - 042001-6

Research output: Contribution to journalArticle

Open Access
File
resonators
cavity resonators
cavities
dark matter
photons
9 Citations (Scopus)

A 3D printed superconducting aluminium microwave cavity

Creedon, D. L., Goryachev, M., Kostylev, N., Sercombe, T. & Tobar, M., 2016, In : Applied Physics Letters. 109, 3, p. 032601-1 - 032601-4 032601.

Research output: Contribution to journalArticle

printing
aluminum
microwaves
cavities
metals
16 Citations (Scopus)

Acoustic Tests of Lorentz Symmetry Using Quartz Oscillators

Lo, A., Haslinger, P., Mizrachi, E., Anderegg, L., Mueller, H., Hohensee, M., Goryachev, M. & Tobar, M., 24 Feb 2016, In : Physical Review X. 6, 1, 011018.

Research output: Contribution to journalArticle

Open Access
sectors
quartz
oscillators
acoustics
symmetry
2 Citations (Scopus)
96 Downloads (Pure)

A new method of probing mechanical losses of coatings at cryogenic temperatures

Galliou, S., Deléglise, S., Goryachev, M., Neuhaus, L., Cagnoli, G., Zerkani, S., Dolique, V., Bon, J., Vacheret, X., Abbé, P., Pinard, L., Michel, C., Karassouloff, T., Briant, T., Cohadon, P. F., Heidmann, A., Tobar, M. E. & Bourquin, R., 1 Dec 2016, In : Review of Scientific Instruments. 87, 12, 123906.

Research output: Contribution to journalArticle

Open Access
File
cryogenic temperature
Cryogenics
coatings
Coatings
chromium
19 Citations (Scopus)
145 Downloads (Pure)

Axion Dark Matter Coupling to Resonant Photons via Magnetic Field

Mcallister, B., Parker, S. & Tobar, M., 21 Apr 2016, In : Physical Review Letters. 116, 16, p. 161804-1-161804-5 161804.

Research output: Contribution to journalArticle

Open Access
File
dark matter
photons
magnetic fields
cavities
sensitivity

Behavior of quartz crystal resonators at liquid helium temperature

Galliou, S., Abbé, P., Goryachev, M., Ivanov, E. N., Tobar, M. E. & Bourquin, R., 2016, 2016 European Frequency and Time Forum. Everard, J. (ed.). IEEE, Institute of Electrical and Electronics Engineers

Research output: Chapter in Book/Conference paperConference paper

quartz crystals
liquid helium
resonators
Q factors
acoustics
27 Citations (Scopus)
194 Downloads (Pure)

Combined Search for Lorentz Violation in Short-Range Gravity

Shao, C. G., Tan, Y. J., Tan, W. H., Yang, S. Q., Luo, J., Tobar, M., Bailey, Q. G., Long, J. C., Weisman, E., Xu, R. & Kostelecký, V. A., 10 Aug 2016, In : Physical Review Letters. 117, 7, p. 071102-1 - 071102-6

Research output: Contribution to journalArticle

Open Access
File
curvature
gravitation
invariance
sectors
probes
11 Citations (Scopus)

Enhanced sensitivity to Lorentz invariance violations in short-range gravity experiments

Shao, C. G., Chen, Y. F., Tan, Y. J., Luo, J., Yang, S. Q. & Tobar, M. E., 2016, In : Physical Review D - Particles, Fields, Gravitation and Cosmology. 94, 10, 104061.

Research output: Contribution to journalArticle

invariance
gravitation
sensitivity
pendulums
geometry
12 Citations (Scopus)

High-Stability Comparison of Atomic Fountains Using Two Different Cryogenic Oscillators

Abgrall, M., Guena, J., Lours, M., Santarelli, G., Tobar, M. E., Bize, S., Grop, S., Dubois, B., Fluhr, C. & Giordano, V., 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 8, p. 1198-1203 6 p.

Research output: Contribution to journalArticle

Fountains
Cryogenics
cryogenics
oscillators
Atomic clocks

Impact of coatings on the quality factor of a quartz crystal resonator at liquid helium temperature

Galliou, S., Vacheret, X., Abbe, P., Bourquin, R., Deleglise, S., Neuhaus, L., Karassouloff, T., Briant, T., Cohadon, P. F., Heidmann, A., Goryachev, M., Tobar, M. E., Dolique, V., Pinard, L., Michel, C. & Cagnoli, G., 2016, 2016 IEEE International Frequency Control Symposium, IFCS 2016 - Proceedings. Partridge, A. (ed.). IEEE, Institute of Electrical and Electronics Engineers

Research output: Chapter in Book/Conference paperConference paper

quartz crystals
liquid helium
Q factors
resonators
coatings
6 Citations (Scopus)

Piezoelectric tunable microwave superconducting cavity

Carvalho, N. C., Fan, Y. & Tobar, M. E., 20 Sep 2016, In : Review of Scientific Instruments. 87, 9, p. 094702-1 - 094702-4

Research output: Contribution to journalArticle

Tuning
Microwaves
microwaves
cavities
Piezoelectric actuators
5 Citations (Scopus)

Quality factor measurements of various types of quartz crystal resonators operating near 4 K

Galliou, S., Goryachev, M., Abbe, P., Vacheret, X., Tobar, M. & Bourquin, R., 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 7, p. 975-980

Research output: Contribution to journalArticle

Crystal resonators
quartz crystals
Helium
Quartz
Q factors
7 Citations (Scopus)
134 Downloads (Pure)

Quartz-superconductor quantum electromechanical system

Woolley, M. J., Emzir, M. F., Milburn, G. J., Jerger, M., Goryachev, M., Tobar, M. & Fedorov, A., 28 Jun 2016, In : Physical Review B - Condensed Matter and Materials Physics. 93, 22, 224518.

Research output: Contribution to journalArticle

Open Access
File
Oscillators (mechanical)
Quartz
Superconducting materials
quartz
oscillators