Graphene meets diamond: 2D spintronics probed with diamond quantum sensors

Quantum magnetic imaging of iron organelles within the pigeon cochlea

Robert W de Gille, Julia M McCoey, Liam T Hall, Jean-Philippe Tetienne, E Pascal Malkemper, David A Keays, Lloyd CL Hollenberg, David A Simpson

2021-11-23

The ability of pigeons to sense geomagnetic fields has been conclusively established despite a notable lack of determination of th..

Polarization Transfer to External Nuclear Spins Using Ensembles of Nitrogen-Vacancy Centers

AJ Healey, LT Hall, GAL White, T Teraji, M-A Sani, F Separovic, J-P Tetienne, LCL Hollenberg

2021-05-24

The nitrogen-vacancy (N-V) center in diamond has emerged as a candidate to noninvasively hyperpolarize nuclear spins in molecular ..

Prospects for nuclear spin hyperpolarization of molecular samples using nitrogen-vacancy centers in diamond

J-P Tetienne, LT Hall, AJ Healey, GAL White, M-A Sani, F Separovic, LCL Hollenberg

2021-01-21

After initial proof-of-principle demonstrations, optically pumped nitrogen-vacancy (NV) centers in diamond have been proposed as a..

Comparison of different methods of nitrogen-vacancy layer formation in diamond for wide-field quantum microscopy

AJ Healey, A Stacey, BC Johnson, DA Broadway, T Teraji, DA Simpson, J-P Tetienne, LCL Hollenberg

2020-10-29

Thin layers of near-surface nitrogen-vacancy (NV) defects in diamond substrates are the workhorse of NV-based wide-field magnetic ..

Investigation of charge carrier trapping in H-terminated diamond devices

CT-K Lew, N Dontschuk, DA Broadway, J-P Tetienne, JC McCallum, LCL Hollenberg, BC Johnson

2020-10-05

Surfaces and interfaces can dominate charge carrier transport dynamics in electronic devices, impeding realization of a material's..

Imaging Domain Reversal in an Ultrathin Van der Waals Ferromagnet

David A Broadway, Sam C Scholten, Cheng Tan, Nikolai Dontschuk, Scott E Lillie, Brett C Johnson, Guolin Zheng, Zhenhai Wang, Artem R Oganov, Shangjie Tian, Chenghe Li, Hechang Lei, Lan Wang, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-10-01

The recent isolation of 2D van der Waals magnetic materials has uncovered rich physics that often differs from the magnetic behavi..

Improved Current Density and Magnetization Reconstruction Through Vector Magnetic Field Measurements

DA Broadway, SE Lillie, SC Scholten, D Rohner, N Dontschuk, P Maletinsky, J-P Tetienne, LCL Hollenberg

2020-08-26

Stray magnetic fields contain significant information about the electronic and magnetic properties of condensed matter systems. Fo..

MoO3 induces p-type surface conductivity by surface transfer doping in diamond

Kaijian Xing, Yang Xiang, Ming Jiang, Daniel L Creedon, Golrokh Akhgar, Steve A Yianni, Haiyan Xiao, Lothar Ley, Alastair Stacey, Jeffrey C McCallum, Serge Zhuiykov, Christopher Pakes, Dong-Chen Qi

2020-04-15

Surface transfer doping of diamond using high electron affinity transition metal oxides (TMOs), such as MoO3, has emerged as a key..

Enhanced Widefield Quantum Sensing with Nitrogen-Vacancy Ensembles Using Diamond Nanopillar Arrays

Daniel J McCloskey, Nikolai Dontschuk, David A Broadway, Athavan Nadarajah, Alastair Stacey, Jean-Philippe Tetienne, Lloyd CL Hollenberg, Steven Prawer, David A Simpson

2020-03-18

Surface micro- and nano-patterning techniques are often employed to enhance the optical interface to single photoluminescent emitt..

Quantum Magnetic Imaging of Iron Biomineralization in Teeth of the Chiton Acanthopleura hirtosa

Julia M McCoey, Mirai Matsuoka, Robert W de Gille, Liam T Hall, Jeremy A Shaw, Jean-Philippe Tetienne, David Kisailus, Lloyd CL Hollenberg, David A Simpson

2020-03-13

Iron is critical for life. Nature capitalizes on the physical attributes of iron biominerals for functional, structural, and senso..

Laser Modulation of Superconductivity in a Cryogenic Wide-field Nitrogen-Vacancy Microscope.

Scott E Lillie, David A Broadway, Nikolai Dontschuk, Sam C Scholten, Brett C Johnson, Sebastian Wolf, Stephan Rachel, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-03-11

We realize a cryogenic wide-field nitrogen-vacancy microscope and use it to image Abrikosov vortices and transport currents in a s..

Quantum Bath Control with Nuclear Spin State Selectivity via Pulse-Adjusted Dynamical Decoupling

JE Lang, DA Broadway, GAL White, LT Hall, A Stacey, LCL Hollenberg, TS Monteiro, J-P Tetienne

2019-11-22

Dynamical decoupling (DD) is a powerful method for controlling arbitrary open quantum systems. In quantum spin control, DD general..

Imaging Graphene Field-Effect Transistors on Diamond Using Nitrogen-Vacancy Microscopy

Scott E Lillie, Nikolai Dontschuk, David A Broadway, Daniel L Creedon, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2019-08-09

The application of imaging techniques based on ensembles of nitrogen-vacancy (N-V) sensors in diamond to characterize electrical d..

Microscopic Imaging of the Stress Tensor in Diamond Using in Situ Quantum Sensors

DA Broadway, BC Johnson, MSJ Barson, SE Lillie, N Dontschuk, DJ McCloskey, A Tsai, T Teraji, DA Simpson, A Stacey, JC McCallum, JE Bradby, MW Doherty, LCL Hollenberg, J-P Tetienne

2019-07-01

The precise measurement of mechanical stress at the nanoscale is of fundamental and technological importance. In principle, all si..

Rapid, High-Resolution Magnetic Microscopy of Single Magnetic Microbeads

Julia M McCoey, Robert W de Gille, Babak Nasr, Jean-Philippe Tetienne, Liam T Hall, David A Simpson, Lloyd CL Hollenberg

2019-05-01

Magnetic microparticles or “beads” are used in a variety of research applications from cell sorting through to optical force tract..

Evidence for Primal sp(2) Defects at the Diamond Surface: Candidates for Electron Trapping and Noise Sources

Alastair Stacey, Nikolai Dontschuk, Jyh-Pin Chou, David A Broadway, Alex K Schenk, Michael J Sear, Jean-Philippe Tetienne, Alon Hoffman, Steven Prawer, Chris I Pakes, Anton Tadich, Nathalie P de Leon, Adam Gali, Lloyd CL Hollenberg

2019-02-08

Many advanced applications of diamond materials are now being limited by unknown surface defects, including in the fields of high ..

Apparent delocalization of the current density in metallic wires observed with diamond nitrogen-vacancy magnetometry

J-P Tetienne, N Dontschuk, DA Broadway, SE Lillie, T Teraji, DA Simpson, A Stacey, LCL Hollenberg

2019-01-29

We report on a quantitative analysis of the magnetic field generated by a continuous current running in metallic microwires fabric..

Nonvanishing effect of detuning errors in dynamical-decoupling-based quantum sensing experiments

JE Lang, T Madhavan, J-P Tetienne, DA Broadway, LT Hall, T Teraji, TS Monteiro, A Stacey, LCL Hollenberg

2019-01-09

Characteristic dips appear in the coherence traces of a probe qubit when dynamical decoupling (DD) is applied in synchrony with th..

Magnetic noise from ultrathin abrasively deposited materials on diamond

Scott E Lillie, David A Broadway, Nikolai Dontschuk, Ali Zavabeti, David A Simpson, Tokuyuki Teraji, Torben Daeneke, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2018-11-08

Sensing techniques based on the negatively charged nitrogen-vacancy (NV) center in diamond have emerged as promising candidates to..

Spatial mapping of band bending in semiconductor devices using in situ quantum sensors

DA Broadway, N Dontschuk, A Tsai, SE Lillie, CT-K Lew, JC McCallum, BC Johnson, MW Doherty, A Stacey, LCL Hollenberg, J-P Tetienne

2018-09-01

Local variations in the charge distribution at semiconductor interfaces can lead to energy level band bending in the structure’s b..

Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond

Jean-Philippe Tetienne, David A Broadway, Scott E Lillie, Nikolai Dontschuk, Tokuyuki Teraji, Liam T Hall, Alastair Stacey, David A Simpson, Lloyd CL Hollenberg

2018-04-01

Magnetic imaging with ensembles of nitrogen-vacancy (NV) centres in diamond is a recently developed technique that allows for quan..

Quantum probe hyperpolarisation of molecular nuclear spins

David A Broadway, Jean-Philippe Tetienne, Alastair Stacey, James DA Wood, David A Simpson, Liam T Hall, Lloyd CL Hollenberg

2018-03-28

Hyperpolarisation of nuclear spins is important in overcoming sensitivity and resolution limitations of magnetic resonance imaging..

High precision single qubit tuning via thermo-magnetic field control

David A Broadway, Scott E Lillie, Nikolai Dontschuk, Alastair Stacey, Liam T Hall, Jean-Philippe Tetienne, Lloyd CL Hollenberg

2018-03-05

Precise control of the resonant frequency of a spin qubit is of fundamental importance to quantum sensing protocols. We demonstrat..

Spin properties of dense near-surface ensembles of nitrogen-vacancy centers in diamond

J-P Tetienne, RW de Gille, DA Broadway, T Teraji, SE Lillie, JM McCoey, N Dontschuk, LT Hall, A Stacey, DA Simpson, LCL Hollenberg

2018-02-02

We present a study of the spin properties of dense layers of near-surface nitrogen-vacancy (NV) centers in diamond created by nitr..

Environmentally Mediated Coherent Control of a Spin Qubit in Diamond

Scott E Lillie, David A Broadway, James DA Wood, David A Simpson, Alastair Stacey, Jean-Philippe Tetienne, Lloyd CL Hollenberg

2017-04-19

The coherent control of spin qubits forms the basis of many applications in quantum information processing and nanoscale sensing, ..

Quantum imaging of current flow in graphene

Jean-Philippe Tetienne, Nikolai Dontschuk, David A Broadway, Alastair Stacey, David A Simpson, Lloyd CL Hollenberg

2017-04-01

Since its first discovery in 2004, graphene has been found to host a plethora of unusual electronic transport phenomena, making it..