Minicolloquium on atomic-scale imaging of quantum matter at CMD31

Submit your abstract now for minicolloquium 42 “A quantum leap: unraveling the mysteries of correlated electronic states in quantum materials through atomic-scale imaging and spectroscopy” at the CMD conference in Braga, Portugal, and join us for lively discussions about new insights from atomic-scale imaging of correlated states.

See here for a list of confirmed invited speakers.

Magnetisation-driven Lifshitz transition

How can the magnetization direction in a ferromagnet drive a Lifshitz transition? In our new study of Sr4Ru3O10 with QPI and ARPES we establish its low energy electronic structure and propose a tight-binding model that captures the key features, including the spin- and orbital character of the van Hove singularity closest to the Fermi energy. Using this model, we identify a mechanism for a Lifshitz transition that is based on the magnetization direction and spin-orbit coupling.

Reaching those conclusions was only possible by combing the millikelvin QPI results measured by Carolina and Weronika with DFT modelling from Luke and ARPES done in collaboration with Phil Murgatroyd and Phil King’s group.

Original publication:

APS March meeting

Meet members of the group at the APS March meeting in Minneapolis. Work of the group and its members features in the following contributions:

  • Luke Rhodes in A16.00011: “Structural routes to stabilize superconducting La3Ni2O7 at ambient pressure”, Mon 10am, room M100G.
  • G10.00014: “Spin-orbit coupling induced Van Hove singularity in proximity to a Lifshitz transition in Sr4Ru3O10“, Tue, 2.06pm, room M100A (talk by Phil Murgatroyd from Phil King’s group).
  • Harry Lane in:
    • G21.00003: “Orbital-driven spin-singlet dimerization in La2Ru4O10“, Tue, 12:18pm, room 101A.
    • N23.00006: “Sunny, a user-friendly Julia package for simulating generalized spin dynamics”, Wed, 12:54pm, room 101C.
    • Z62.00003: “Linear spin wave theory of large magnetic unit cells using the Kernel Polynomial Method”, Fri, 11:54am, room 208CD.


Congratulations to Olivia to her viva and a great PhD thesis on “Scanning Tunnelling Microscopy of Magnetic van der Waals Materials”, and many thanks to Philip Moriarty and Renald Schaub for examining the thesis!

Killing Corona …

How good are different surfaces at deactivating SARS-CoV-2 viruses. Copper beats them almost all – except cuprous oxide (Cu2O)! Why is that? Read more in our new paper in Applied and Environmental Microbiology ahead of print. Great interdisciplinary collaboration across CDQM and with Cathy Adamson from the School of Biology and her team.


Congratulations to Izidor to his graduation and his PhD thesis “Imaging emergent surface magnetism in ruthenates”!


Looking forward to Izidors graduation this week. If you want to find out more about his work, come to his graduant talk Wednesday, 29 November at 2pm in Lecture Theatre C on Amazing atoms, exciting electrons and mysterious magnets (in person only). Hint: it might feature compasses …

Inaugural Lecture

This image shows how ChatGPT ‘thinks’ our research looks like, in response to a prompt to produce an image representing our research as described here. If you want to find out what it looks like in reality come to Peter’s inaugural lecture on Wednesday, 22 November, 5.15pm, School 3, St Salvator’s Quad.

You can find more funky images with visualisations of our research created with ChatGPT here.

Compass-like control of electronic structure

How can one control electronic structure just with magnetic fields? In our new paper, we track how the electronic structure in Sr3Ru2O7 changes as a function of applied field direction, providing direct imaging of a field-controlled nematicity and how to control electronic structure with surprisingly modest magnetic fields. Also another good example of how the surface can differ subtly from what the bulk does …

Read more in Masahiro and Isidor’s paper:
Masahiro Naritsuka, Izidor Benedičič, Luke C. Rhodes, Carolina A. Marques, Christopher Trainer, Zhiwei Li, Alexander C. Komarek, and Peter Wahl, Compass-like manipulation of electronic nematicity in Sr3Ru2O7, Proc. Nat. Acad. Sci. 120, e2308972120 (2023), arxiv/2305.11210.

Odd triplets

Read in our new study, led by Steve Lee’s group combining μSR with STM by Chi Ming and Christopher and theory, what evidence there is for triplet pairs due to spin-orbit coupling and proximity effect in heterostructures of Platinum and Niobium.

Original publication:
M. Flokstra, R. Stewart, C.-M. Yim, C. Trainer, P. Wahl, D. Miller, N. Satchell, G. Burnell, H. Luetkens, T. Prokscha, A. Suter, E. Morenzoni, S. Lee, Spin-orbit driven superconducting proximity effects in Pt/Nb thin films, Nat. Commun. 14, 5081 (2023).