Wahl group account

Flat electronic bands from cooperative moiré and charge order The formation of flat electronic bands from long-wavelength superperiodic moiré potentials in van der Waals heterostructures underpins the creation and control of a host of highly-tuneable correlated ...

New preprint showing how long-wavelength moiré potentials and flat electronic bands can be generated from the interplay of a large lattice mismatch and an additional periodic modulation from a charge-density wave; with @wahlgroup.bsky.social & @maxivlaboratory.bsky.social. arxiv.org/abs/2511.05648

Quarter of UK university physics departments at risk of closing, survey finds Four out of five making staff cuts as physicists say findings are ‘great concern’ for UK’s leadership in important areas

This is really scary - I always thought physics was safe. It would be huge loss to see physics departments close across the country.
www.theguardian.com/education/20...

Where to study Physics in the UK? St Andrews in top spot for Physics&Astronomy and place 2 overall! #evertoexcel @uniofstandrews.bsky.social
t.co/tynr1C2V2h

Welcome to Ferran Aliagas Puigdomènech, who joins us from Universiteit van Amsterdam as a new PhD student in the group, working jointly with us and @wahlgroup.bsky.social

Many congratulations to Dan on successfully defending his PhD thesis: using LEED-IV to track minute structural distortions at ruthenate surfaces, and understanding their implications on electronic structure. Dan worked jointly with us, @wahlgroup.bsky.social and @diamondlightsource.bsky.social

Looking for highly motivated individuals who are keen to work on superconductivity in thin films of lanthanum nickelates. The project encompasses thin film growth by MBE, ARPES and STM. For the full advert, see www.vacancies.st-andrews.ac.uk/Vacancies/W/....

Currently recruiting

https://wahl.wp.st-andrews.ac.uk/2025/08/21/currently-recruiting-3/

simulated QPI image

That’s calcQPI, our code to calculate quasiparticle interference images, published. We find it indispensable to decipher our measurements! Find a survey of its features at www.arxiv.org/abs/2507.22137, the code is on GitHub at github.com/gpwahl/calcq....

Quantum materials making a stretch: giant magnetoelasticity driven by exchange interactions in Sr₄Ru₃O₁₀. Read in www.nature.com/articles/s41... how Carolina established control of the surface magnetization and probed it through Van Hove singularities. #evertoexcel @uniofstandrews.bsky.social

Giant magnetoelastic coupling in a correlated ferromagnet

https://wahl.wp.st-andrews.ac.uk/2025/06/17/giant-magnetoelastic-coupling-in-a-correlated-ferromagnet/

From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers npj Quantum Materials - From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers

Paper on phase-selective growth control and magnetic properties of monolayer CrTe2 and Cr2Te3, together with @wahlgroup.bsky.social and @diamondlightsource.bsky.social, out now in npj Quantum Materials: rdcu.be/enrwg

University Research Fellowship | Royal Society This scheme is for outstanding scientists who are in the early stages of their research career and have the potential to become leaders in their field. These long-term fellowships provide the opportun...

We are taking applications for the URF call (royalsociety.org/grants/unive...). Candidates should submit their application documents (draft for the 4 page proposal (royalsociety.org/-/media/gran...) and an up to date CV) by 1 July to physdor@st-andrews.ac.uk. Candidates will be informed by 4th July.

New preprint from CDQM at arxiv.org/abs/2505.07942: a study by quasi-particle interference and ARPES of the electronic structure of monolayer CrTe₂. Some of the first results from Olivia's STM4. Great collaboration with Naina, Akhil and King group.

New preprint: Quasi-particle interference of monolayer CrTe2

https://wahl.wp.st-andrews.ac.uk/2025/05/14/new-preprint-quasi-particle-interference-of-monolayer-crte2/

Electronic structure of monolayer-CrTe$_2$: an antiferromagnetic 2D van der Waals material Magnetic van der Waals materials are an important building block to realize spintronic functionalities in heterostructures of two-dimensional (2D) materials. Yet, establishing their magnetic and elect...

New preprint with @wahlgroup.bsky.social on the electronic structure of antiferromagnetic monolayer CrTe2: arxiv.org/abs/2505.07942

YouTube video by University of St Andrews Inaugural Lecture Prof Peter Wahl

Peter's inaugural lecture is now available online at youtu.be/U87-k33xGU4?...

Meet us and hear about our research at the APS March meeting in Anaheim:

Peter Wahl on 'Why the surface of Sr₂RuO₄ is not superconducting'

Carolina Marques on 'Exchange-driven Magnetoelastic Coupling in a Strongly Correlated Electron Material'

(for times see rb.gy/x6we8k)

Meet us at the APS March Meeting 2025

https://wahl.wp.st-andrews.ac.uk/2025/03/17/meet-us-at-the-aps-march-meeting-2025/

Enjoying exciting talks and discussions at the retreat of the Centre for Designer Quantum Materials (www.cdqm.uk) at the Burn.

Our paper on how quasiparticle interference (QPI) can probe moiré electronic structures in twisted bilayer materials is out, bridging modelling of QPI imaging and electronic structure in twisted heterostructures! 🌀🔬
Read the 📄 here: doi.org/10.1103/Phys...
#QuantumMaterials #STM #MoiréPhysics

Looking forward to the retreat of the Centre for Designer Quantum Materials at the Burn and a programme (theburn2025.wp.st-andrews.ac.uk) full of exciting talks and discussions.

Celebrating 10 years of ultra-low vibrations in St Andrews, and whatever else there is to celebrate, with a ULV lab cake ...

Interested in an exciting PhD project working in a stimulating environment in the Centre for Designer Quantum Materials, combining cutting-edge experiments, bespoke instrumentation, complex data analysis and numerical modelling? Any questions get in touch, apply at www.st-andrews.ac.uk/pgr/home.htm.