Physics at extreme conditions
The research in the unit Physics at Extreme Conditions is aimed at understanding the stability and properties of materials at ultra-high pressure and temperature conditions.
Extreme pressures and temperatures can strongly modify the potential energy surface of a given element combination and lead to the formation of new phases with functional properties. We are in particularly interested in exploiting extreme pressures and temperatures as thermodynamic variables to greatly enhance the likelihood of synthesising not only thermodynamically stable, but also so-called metastable materials. For this exploration, we use state-of-the-art theoretical tools, in particular density functional theory based computation, as well as novel approaches, including machine learning and artificial intelligence. We actively develop methods that can more reliably take into account the effect of high temperature and complex interactions between electrons on materials properties. We use the generated knowledge in our strong collaborations with experimental researchers and industry.
Staff
News
Publications
2026
High-pressure formation and characterization of a boron carbide polymorph featuring bent C-B-C chains
Physical Review B, Vol. 113, Article 104108
(Article in journal)
https://dx.doi.org/10.1103/v5kf-svcz
Stabilization of the [C2N5]7- Anion in Recoverable High-Pressure Eu4Fe0.864(6)(C2N5)2 Pyronitridocarbonate
Journal of the American Chemical Society
(Article in journal)
https://dx.doi.org/10.1021/jacs.5c21756
Vanadium photoluminescence in 3C-SiC
Physical Review B, Vol. 113, Article 075201
(Article in journal)
https://dx.doi.org/10.1103/nv8v-gwlv
Compressed MgCl2 Reveals Multiple Pathways to Cotunnite Structures
Inorganic Chemistry, Article PMID 366543
(Article in journal)
https://dx.doi.org/10.1021/acs.inorgchem.5c05774
High-Pressure Synthesis of the First Thermodynamically Stable Silver Nitride, AgN5
JACS Au, Vol. 6, p. 193-199
(Article in journal)
https://dx.doi.org/10.1021/jacsau.5c01135
High-Pressure Synthesis of Antimony Nitride Sb3N5 and Polynitride Sb2N8 Featuring Single-Bonded N810-Chains
Angewandte Chemie International Edition, Vol. 65, Article e22652
(Article in journal)
https://dx.doi.org/10.1002/anie.202522652
2025
Revisiting thermal transport in CuCl: First-principles calculations and machine learning force fields
Physical Review B, Vol. 112, Article 214306
(Article in journal)
https://dx.doi.org/10.1103/8p6y-fsmh
Correction: Corrigendum to "Elucidating dislocation core structures in titanium nitride through high-resolution imaging and atomistic simulations". [Mater. Des. 224 (2022) 111327]
Materials & design, Vol. 260, Article 115191
(Article in journal)
https://dx.doi.org/10.1016/j.matdes.2025.115191
High-Pressure Synthesis of Two Pb3(C3N6) Polymorphs Featuring Fully Deprotonated [C3N6]6- Melaminate Anions
Journal of the American Chemical Society, Vol. 147, p. 35431-35437
(Article in journal)
https://dx.doi.org/10.1021/jacs.5c09198
High-Pressure Mg3Cl7 Synthesized in a Diamond Anvil Cell as a Polar Metal with Second-Harmonic Generation
Journal of the American Chemical Society, Vol. 147
(Article in journal)
https://dx.doi.org/10.1021/jacs.5c07812
High-Pressure Synthesis of Crystalline Double-Layer Carbon Nitride Networks Stabilized in Bi7C10N18(N3(1-x)O3x)
Angewandte Chemie International Edition, Vol. 64, Article e202506406
(Article in journal)
https://dx.doi.org/10.1002/anie.202506406
High-Pressure Synthesis of Nitrogen-Rich Y(N5)3<middle dot>N2 Pentazolate with Perovskite Topology
Angewandte Chemie International Edition, Vol. 64, Article e202506334
(Article in journal)
https://dx.doi.org/10.1002/anie.202506334
Controlled polymorphic competition - A path to tough and hard ceramics
Acta Materialia, Vol. 294, Article 121121
(Article in journal)
https://dx.doi.org/10.1016/j.actamat.2025.121121
Carbon-contaminated topological defects in hexagonal boron nitride for quantum photonics
npj 2D Materials and Applications, Vol. 9, Article 33
(Article in journal)
https://dx.doi.org/10.1038/s41699-025-00559-z
Theoretical characterization of NV-like defects in 4H-SiC using ADAQ with SCAN and r2SCAN meta-GGA functionals
Applied Physics Letters, Vol. 126, Article 154001
(Article in journal)
https://dx.doi.org/10.1063/5.0252129
Evolution of the optically detected magnetic resonance spectra of divacancies in 4H-SiC from liquid-helium to room temperature
Physical Review B, Vol. 111, Article 165201
(Article in journal)
https://dx.doi.org/10.1103/PhysRevB.111.165201
Machine learning interatomic potential for the low-modulus Ti-Nb-Zr alloys in the vicinity of dynamical instability
Materials & design, Vol. 253, Article 113865
(Article in journal)
https://dx.doi.org/10.1016/j.matdes.2025.113865
Surfactant-induced hole concentration enhancement for highly efficient perovskite light-emitting diodes
Nature Materials, Vol. 24, p. 778-784
(Article in journal)
https://dx.doi.org/10.1038/s41563-025-02123-y
High Pressure Synthesis of Pr2O5 - A Unique Lanthanoid(IV) Oxide Peroxide
Angewandte Chemie International Edition, Vol. 64, Article e202422929
(Article in journal)
https://dx.doi.org/10.1002/anie.202422929
ADAQ-SYM: Automated symmetry analysis of defect orbitals
Computer Physics Communications, Vol. 308, Article 109468
(Article in journal)
https://dx.doi.org/10.1016/j.cpc.2024.109468