Johan Chang

Experimental condensed matter physicist - excited about collective electron physics of quantum matter.

[Laboratory for Quantum Matter Research @JohanChangLab]

🎉 Huge congrats to our postdoc Leonardo for winning the Best PhD Thesis Award "Carlo Lamberti" at the SILS (italian synchrotron society) conference in Rende for his stellar PhD thesis!

[Laboratory for Quantum Matter Research @JohanChangLab]

🌟Compressive c-axis pressure amplifies stripe order within the superconducting state of cuprate superconductor, while having no impact on the normal state🌟

Great work of our PhD student, Julia, published in @CommsPhys @NaturePortfolio👇
https://t.co/cCapmSjegn

[Laboratory for Quantum Matter Research @JohanChangLab]

Togehter with @UCAS1978 @BrookhavenLab @CUHKofficial @MIT_Physics @DiamondLightSou we published @NatureComms @NaturePortfolio

🌟Magnetic excitations in strained infinite-layer nickelate PrNiO2 films🌟

about the youngest family of high Tc superconductors

https://t.co/ZbD1VTZJ1H

[Laboratory for Quantum Matter Research @JohanChangLab]

Our great success @NatureComms
@NaturePortfolio ‼️

Using an effective Heisenberg Hamiltonian, we show that the magnon dispersion in AF cuprates is described well when including significant quantum corrections stemming from magnon-magnon interaction ⬇️
https://t.co/T6RvJcGwcP

[Laboratory for Quantum Matter Research @JohanChangLab]

🌟Discovery of Giant Unit-Cell Super-Structure in the Infinite-Layer Nickelate PrNiO2 !🌟

Chek our new @arxiv @ArXiv_articles👉 https://t.co/PBglZsy8se

Do we resolve the mystery of arguable CDW in nickelate 112 superconductors? Data collected at @desy @desynews

[Johan Chang @JohanChang13]

Agree - great cover picture of Daniel Mazzone and @NBC_neutron and interesting overview article from Daniel on uniaxial pressure. Thanks Gediminas for shooting this expressive photo from Thales.

[Gediminas Simutis @Gedas_Simutis]

I was happy to find the latest edition of the SPS Communications in the post this morning. Especially as the cover has a picture of @NBC_neutron and Daniel Mazzone that I took at @ILLGrenoble. Daniel has written a nice overview of recent cuprate studies with uniaxial pressure.

[Johan Chang @JohanChang13]

Congratulations Julia, Ron and Chun for completing this work on the cuprate-pseudogap-state that remains a major enigma. It took us 7 years to follow-up on our previous study https://t.co/a1rXAMgWpD. Even Ron left for Swissgrid, the next contribution should come soon!

[Physical Review Research @PhysRevResearch]

Pseudogap suppression by competition with superconductivity in La-based cuprates, J. Küspert et al @JohanChangLab @UZHPhysics #CondensedMatter #Materials #Superconductivity https://t.co/2O7sSdPdTj

[Johan Chang @JohanChang13]

Father of "entropy", Rudolf Clausius, turns 200 this year. The Swiss Physical Society #SPS celebrates this with a public symposium at the #EPFL on Oct. 8th. This event brings together young talents from across Switzerland.

[Johan Chang @JohanChang13]

@davblei 4-8 of September 2023, we have the annual Swiss and Austrian physical society meeting in Basel. Would it make sense to arrange a surface science session on 8.9.2023 in Basel?!

[Johan Chang @JohanChang13]

@PHChess The paper seems to conclude that a 2860 player has a 4.5% chance to be (momentarily) overrated by 40 Elo points. Isn't the goal to be the first carbon-based chess player reaching consistent 2900 playing skills rather than hoping for favorable statistical fluctuations?

[Johan Chang @JohanChang13]

@NBC_neutron Cool to see both Ellen and Mads as winners - you and Kim have done a great job as supervisors!

[Johan Chang @JohanChang13]

A 30 year old theoretical prediction for quasi-2D d-wave superconductors with low-energy van Hove singularities is confirmed. In high magnetic fields a square-to-square vortex lattice transition is observed by ultra-sound measurements. Congratulations to TEAM-LeBoeuf.

[The Innovation | Physics @InnovationPhys]

Phys. Rev. Lett. 129, 067001 (2022) - Evidence for a Square-Square Vortex Lattice Transition in a High-${T}_{c}$ Cuprate Superconductor https://t.co/Nkkpd2NEfQ

[Johan Chang @JohanChang13]

#IcefjordCentre (by Dorte Mandrup-Paulsen) and #UNESCO trail in #Ilulissat. Impeccable interface between nature and architecture. In the background, 20 billion tonnes of icebergs are launched into the ocean every year.

[Johan Chang @JohanChang13]

@JanoschekMarc @petrscience @figshare Indeed - very interesting! Downloaded and under digestion. Thanks.

[Johan Chang @JohanChang13]

@JanoschekMarc @JohanChangLab @m2s_conference Karin's work is posted on the arXiv:
https://t.co/FZVyL66RQl

[Johan Chang @JohanChang13]

Gazing at the #kengokuma tower under construction in #Vancouver. The unconventional design is indeed outstanding.

[Johan Chang @JohanChang13]

@JanoschekMarc @Gedas_Simutis @cqumatUZH @JohanChangLab @ILLGrenoble @psich_en @chalmersuniv @NBC_neutron Beautiful example of back-of-the-envelope estimation of counting statistics, marginal gain strategy and team work.

[Johan Chang @JohanChang13]

@UZHPhysics Thanks to Anna Véron and Qisi Wang for organising this seminar serie!

[Johan Chang @JohanChang13]

Congratulation to the organisers of “From Solid State to BioPhysics X” conference for bringing together condensed matter, biophysics and medical scientists in Cavtat - Croatia. Was delighted to learn about recent breakthroughs on #Parkinsonsdisease.

[Johan Chang @JohanChang13]

@OLYMPIAPARK turns 50 years — stadium still very impressive!