In our group we utilize a quantum sensor - the nitrogen vacancy (NV) center in diamond - as a highly sensitive and versatile magnetometer. Situating the NV center inside a diamond tip of an atomic force microscope [1] [2], we are able to perform detailed nanoscale measurements of magnetic systems and reveal their underlying magnetic structure. Due to the NV-magnetometer having a broad range of operation temperatures (100 mK – 800 K) we are able to explore numerous condensed matter systems that are inaccessible to other techniques.

In our group, we have the ability to measure from room temperature down to 2K, as well as at Millikelvin temperatures. Research activities of our interest include the study of domain formation in antiferromagnets [3], ferromagnetic resonances, skyrmions, as well as the study of conventional and unconventional superconductors [4] and magnetism in two-dimensional van der Waals crystals [5].

Explore our other projects: Sensing Technology   Spin-Photon-Interface

[1] A robust scanning diamond sensor for nanoscale imaging with single nitrogen-vacancy centres
P. Maletinsky, S. Hong, M. S. Grinolds, B. Hausmann, M. D. Lukin, R. L. Walsworth, M. Loncar, A. Yacoby
Nature Nanotechnology 7, 320–324 (2012)  

[2] Parabolic Diamond Scanning Probes for Single-Spin Magnetic Field Imaging
N. Hedrich, D. Rohner, M. Batzer, P. Maletinsky, B. J. Shields
Phys. Rev. Applied 14, 064007 (2020) 

[3] Nanoscale mechanics of antiferromagnetic domain walls 
N. Hedrich, K. Wagner, O. V. Pylypovskyi, B. J. Shields, T. Kosub, D. D. Sheka, D. Makarov, P. Maletinsky
Nature Physics (2021)

[4] Quantitative nanoscale vortex imaging using a cryogenic quantum magnetometer
L.Thiel, D. Rohner, M. Ganzhorn, P. Appel, E. Neu, B. Mueller, R. Kleiner, D. Koelle, P. Maletinsky
Nature Nanotechnology 11, 677-681 (2016)

[5] Probing magnetism in 2D materials at the nanoscale with single spin microscopy
L. Thiel, Z. Wang, M. A. Tschudin, D. Rohner, I. Gutiérrez-Lezama, N. Ubrig, M. Gibertini, E. Giannini, A.F. Morpurgo, P. Maletinsky
Science 364, 973–976 (2019)