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Joaquín Fernández-Rossier

@jfrossier.bsky.social
65 followers 54 following 33 posts

Born in '71, PhD Physics '99 (UAM Madrid), Professor at @ua.es, working for INL (Braga). Condensed matter theory. Personal web: jfrossier.blogspot.com INL web: inl.int/research-groups/rossier-res… Opinions are my own.

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Joaquín Fernández-Rossier @jfrossier.bsky.social · 07/10/2025
A few minutes before the announcement, let me go with my wish list/prediction for the Nobel Prize in Physics. First, the prediction 1) Martinis, Devore, Clarke, for the discovery of quantum behaviour of the relative phase in Josephson junctions. This makes superconducting quantum hardware possible.
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 23/05/2025
Today is John Bardeen birthday. I wrote this piece to celebrate inl.int/john-bardeen...
inl.int
John Bardeen and the Quantum Roots of the Transistor - INL
Celebrating a giant of modern technology on his 117th birthday This Friday, 23 May, marks the 117th anniversary of the birth of John Bardeen. The vast majority of people, despite being surrounded by b...
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 17/05/2025
Check out our paper "One-dimensional CrI3 encapsulated within multi-walled carbon nanotubes", in collaboration with the group of L. Francis at INL and Manuel Valvidares at ALBA. We are reporting the first observation and characterization of a new type of nanostructure, a CrI3 nanotube.
nature.com
One-dimensional CrI3 encapsulated within multi-walled carbon nanotubes - Communications Chemistry
Producing single-walled inorganic nanotubes is challenging because their multi-walled counterparts are favored during synthesis. Here, the authors produce one-dimensional single-walled CrI3 encapsulat...
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Reposted by Joaquín Fernández-Rossier
Sabine Hossenfelder @hossenfelder.bsky.social · 15/04/2025
It was supposed to be impossible, but a group of researchers say they can generate electricity from Earth's magnetic field. I've had a look. www.youtube.com/watch?v=Qod2...
youtube.com
"Impossible" Device Creates Free Electricity from Earth's Magnetic Field
YouTube video by Sabine Hossenfelder
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 15/04/2025
The conference Condensed Matter in the City, held every other year in London, is accepting abstracts now. Focus topic: quantum materials. Very good list of invited speakers. I participated in 2023 and I loved it. research.kent.ac.uk/pqm/cmpcity2...
research.kent.ac.uk
Condensed Matter Physics in the City 2025 - RESEARCH GROUP / PHYSICS OF QUANTUM AND MATERIALS - Research at Kent
The Hubbard Theory Consortium's annual conference on Condensed Matter Physics, stimulating discussions linking Experiment and Theory.
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 14/04/2025
Happy Quantum day to everyone !
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 25/03/2025
How did it take 14 years for me to find out this great talk by Don Eigler about one of my favorite topics? www.youtube.com/watch?v=rd2d...
youtube.com
TEDxCaltech - Don Eigler - Moving Atoms, one-by-one
YouTube video by TEDx Talks
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 21/03/2025
Check out our work on olympicene spin chains, featured in phys.org @rfasel.bsky.social phys.org/news/2025-03...
phys.org
Olympicene molecular chains create quantum spin systems with spintronics applications
In a new publication in Nature Materials, an international team of researchers has developed groundbreaking artificial chains of the iconic "olympicene" molecules to realize the antiferromagnetic (AF)...
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 14/03/2025
Today our paper "Spin excitations in nanographene-based antiferromagnetic spin-1/2 Heisenberg chains" has been published in Nature Materials. www.nature.com/articles/s41... This is a collaboration with the groups of @rfasel.bsky.social at EMPA, Xingliang Feng at MPI and TUD, and my group at INL.
nature.com
Spin excitations in nanographene-based antiferromagnetic spin-1/2 Heisenberg chains - Nature Materials
Open-shell nanographenes are used to fabricate length-controlled antiferromagnetic spin-1/2 Heisenberg chains. It is revealed that the spin excitation spectra evolve from gapped to gapless following a...
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Reposted by Joaquín Fernández-Rossier
Nature Synthesis @natsynth.nature.com · 21/02/2025
Now online: Article by X Fu, L Huang, K Liu, J Ma, J Fernández-Rossier & co-workers Building spin-1/2 antiferromagnetic Heisenberg chains with diaza-nanographenes www.nature.com/articles/s44... ($) #ChemSky
nature.com
Building spin-1/2 antiferromagnetic Heisenberg chains with diaza-nanographenes - Nature Synthesis
Graphene nanostructures with π magnetism offer a chemically tunable platform to explore correlated magnetic interactions. Here, the on-surface synthesis of spin-1/2 antiferromagnetic Heisenberg chains...
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 23/02/2025
Can you use (Scanning Tunnel Microscopy) STM to determine the energy dispersion of spin excitations in spin chains? Well, in our latest preprint (arxiv.org/abs/2502.13770) we give the answer: it depends. Some context: excitations in crystals have energy E and momentum, k. 👇
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 12/02/2025
I wish days had 48 hours to be able to catch up with so many exciting things going on in Science these days. This paper got my eye (I was going to say attention, but that would be misleading, check the title): arxiv.org/abs/2502.05383.
arxiv.org
Is attention all you need to solve the correlated electron problem?
The attention mechanism has transformed artificial intelligence research by its ability to learn relations between objects. In this work, we explore how a many-body wavefunction ansatz constructed fro...
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Joaquín Fernández-Rossier @jfrossier.bsky.social · 11/02/2025
Hi bsky, I have just created my account here, to discuss about science (mostly condensed matter theory, quantum sensing, quantum computing) with colleagues and friends.
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