Wahl group account
@wahlgroup.bsky.social
Posts of the Tunneling Spectroscopy of Quantum Materials group at the University of St Andrews, see also https://wahl.wp.st-andrews.ac.uk
Reposted by Wahl group account
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
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 ...
arxiv.org
November 15, 2025 at 5:58 AM
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
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...
www.theguardian.com/education/20...
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
www.theguardian.com
September 21, 2025 at 4:31 PM
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...
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
t.co/tynr1C2V2h
https://www.thetimes.com/uk-university-rankings/league-table
t.co
September 19, 2025 at 7:47 PM
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
t.co/tynr1C2V2h
Reposted by Wahl group account
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
September 14, 2025 at 9:24 AM
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
Reposted by Wahl group account
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
September 3, 2025 at 5:18 PM
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/....
August 23, 2025 at 8:27 AM
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/....
August 21, 2025 at 11:24 AM
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....
July 31, 2025 at 10:30 AM
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
June 17, 2025 at 9:52 AM
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/
https://wahl.wp.st-andrews.ac.uk/2025/06/17/giant-magnetoelastic-coupling-in-a-correlated-ferromagnet/
June 17, 2025 at 9:48 AM
Giant magnetoelastic coupling in a correlated ferromagnet
https://wahl.wp.st-andrews.ac.uk/2025/06/17/giant-magnetoelastic-coupling-in-a-correlated-ferromagnet/
https://wahl.wp.st-andrews.ac.uk/2025/06/17/giant-magnetoelastic-coupling-in-a-correlated-ferromagnet/
Reposted by Wahl group account
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
From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers
npj Quantum Materials - From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers
rdcu.be
May 24, 2025 at 10:01 AM
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
Reposted by Wahl group account
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.
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...
royalsociety.org
May 20, 2025 at 8:18 AM
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.
May 14, 2025 at 8:10 PM
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/
https://wahl.wp.st-andrews.ac.uk/2025/05/14/new-preprint-quasi-particle-interference-of-monolayer-crte2/
May 14, 2025 at 8:05 PM
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/
https://wahl.wp.st-andrews.ac.uk/2025/05/14/new-preprint-quasi-particle-interference-of-monolayer-crte2/
Reposted by Wahl group account
New preprint with @wahlgroup.bsky.social on the electronic structure of antiferromagnetic monolayer CrTe2: arxiv.org/abs/2505.07942
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...
arxiv.org
May 14, 2025 at 5:47 AM
New preprint with @wahlgroup.bsky.social on the electronic structure of antiferromagnetic monolayer CrTe2: arxiv.org/abs/2505.07942
Peter's inaugural lecture is now available online at youtu.be/U87-k33xGU4?...
Inaugural Lecture Prof Peter Wahl
YouTube video by University of St Andrews
youtu.be
April 24, 2025 at 6:02 PM
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)
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)
March 17, 2025 at 4:38 PM
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)
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/
https://wahl.wp.st-andrews.ac.uk/2025/03/17/meet-us-at-the-aps-march-meeting-2025/
March 17, 2025 at 4:25 PM
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/
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.
March 11, 2025 at 11:24 AM
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
Read the 📄 here: doi.org/10.1103/Phys...
#QuantumMaterials #STM #MoiréPhysics
March 10, 2025 at 6:29 PM
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
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.
March 3, 2025 at 9:36 PM
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 ...
February 24, 2025 at 4:22 PM
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.
February 5, 2025 at 6:40 PM
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.