EHPRG: The European High Pressure Research Group

Welcome

Welcome to the official website of the European High Pressure Research Group (EHPRG).

EHPRG is non-profitable academic association established in 1963 which is devoted to science and technology of matter under high pressure. It organizes an annual meeting which brings together hundreds of scientists of various fields, mainly physics, chemistry, Earth and planetary sciences, bio- and food science and technology.

The reasonable size of the group, low conference fees, and a friendly relationship between the attendants have made EHPRG meetings a major event in the European high-pressure community for more than half a century.

Upcoming EHPRG Meeting

The 62nd EHPRG Meeting will take place in Manchester, UK, at the Lowry, in the period August 31-September 5, 2025.
The conference will be chaired by John Proctor, Salford University, UK.
For more information, please visit the official webpage of EHPRG-62 (to appear).

Immediate past EHPRG Meetings

The 61st EHPRG Meeting has taken place in Thessaloniki, Greece, at the Porto Palace Hotel, in the period September 1-6, 2024.
The conference has been chaired by John Arvanitidis and Dimitris Christofilos, Aristotle University of Thessaloniki.
For more information, please visit the official webpage of EHPRG-61.

The Joint 28th AIRAPT and 60th EHPRG International Conference on High Pressure Science and Technology (AIRAPT-2023) took place in Edinburgh, UK, at the Edinburgh International Conference Centre (EICC), from July 23-28, 2023.
Immediately prior to AIRAPT/EHPRG, from the 19th to 23rd of July 2023, a Summer School had taken place, also based in Edinburgh, with accommodation provided in University Halls of Residence. The School was aimed at young researchers, and experimentalists wanting a grounding in theory and vice versa.
A photo album is available on the AIRAPT website.
For more information, please visit the official webpage of AIRAPT-23.

High-pressure in the headlines

Selection of high-pressure related titles from top scientific journals.

Continuously tunable negative pressure for engineering high-symmetry nanocrystalline phases

by Arkita ChakrabartiRamchandra GawasCraig L. JohnsonAaron T. FafarmanaDepartment of Chemical and Biological Engineering, Drexel University, Philadelphia, PA 19104bMaterials Characterization Core, Drexel University, Philadelphia, PA 19104

7 Nov 2024 at 9:00am

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Colloquium: Room temperature superconductivity: The roles of theory and materials design

by Warren E. Pickett

Superconductivity, discovered in 1911 and first theoretically understood in 1957, remains a fascinating phenomenon for reasons both fundamental and applied. Reliably calculating the critical temperature of a given material, and even more so predicting it, turned out to be a considerable challenge. This Colloquium explains how theoretical developments have led to increasingly reliable predictions that have culminated in the discovery of the hydride materials that display superconductivity under high pressure at temperatures just shy of room temperature.

7 Apr 2023 at 12:00pm

Assessing spin-density wave formation in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ from electronic structure calculations

by Harrison LaBollita, Victor Pardo, Michael R. Norman, and Antia S. Botana

Materials with strongly interacting electrons can exhibit remarkable behaviors, such as stripe ordering, where charge and spin form periodic patterns. These states often precede unconventional superconductivity, as in the bilayer nickelate La3Ni2O7 under pressure. Using correlated density-functional methods, the authors interrogate possible magnetic ground states of La3Ni2O7. The stripe-ordered ground state reproduces several experimental features, including insulating behavior at ambient pressure and strong antiferromagnetic coupling within the Ni-dz2 orbitals. Moreover, they find that the Ni-dx2−y2 orbitals play a dominant role at low-energy. Overall, their findings provide fresh insights into the stripe ordering and its potential link to superconductivity in this fascinating material.

20 Nov 2024 at 11:00am

First-principles design of ambient-pressure ${\mathrm{Mg}}_{x}{\mathrm{B}}_{2}{\mathrm{C}}_{2}$ and ${\mathrm{Na}}_{x}\mathrm{BC}$ superconductors

by Charlsey R. Tomassetti, Daviti Gochitashvili, Christopher Renskers, Elena R. Margine, and Aleksey N. Kolmogorov

We employ ab initio modeling to investigate the possibility of attaining high-temperature conventional superconductivity in ambient-pressure materials based on the known ${\mathrm{MgB}}_{2}{\mathrm{C}}_{2}$ and recently proposed thermodynamically stable NaBC ternary compounds. The constructed $(T,{P…

14 Nov 2024 at 11:00am

Interplay of altermagnetism and pressure in hexagonal and orthorhombic MnTe

by Nayana Devaraj, Anumita Bose, and Awadhesh Narayan

Alternative magnetic materials, or “altermagnets,” characterized by their unconventional nonrelativistic, momentum-dependent spin-split states, represent a cutting-edge advancement in the field of collinear magnetism, offering promising avenues for spintronic applications. Among these materials, hex…

17 Oct 2024 at 12:00pm

Republished: Colossal density-driven resistance response in the negative charge transfer insulator ${\mathrm{MnS}}_{2}$

by Jasmine K. Hinton, Dylan Durkee, Melanie White, Nathan Dasenbrock-Gammon, G. Alexander Smith, Elliot Snider, Dean Smith, Christian Childs, Keith V. Lawler, and Ashkan Salamat

The Mn chalcogenides show a remarkable variation in structural and physical properties with density. In ${\mathrm{MnS}}_{\text{2}}$ we observe a pronounced difference with the effects of varying hydrostaticity with pressure inducing a structural transition at 300 K. Within the pyrite phase, a coloss…

16 Oct 2024 at 12:00pm

High-pressure synthesis and neutron scattering study of tantalum hydride ${\mathrm{TaH}}_{1.23(5)}$ and a tantalum polymorph with A15-type structure

by Mikhail A. Kuzovnikov, Thomas Hansen, Alexandre S. Ivanov, Alexander I. Kolesnikov, Valery I. Kulakov, Stanislav Savvin, and Marek Tkacz

A unique type of tantalum hydride was synthesized by exposing tantalum dihydride to the high hydrogen pressure of 9 GPa and a temperature of $580{\phantom{\rule{0.16em}{0ex}}}^{∘}\mathrm{C}$ using toroid-type high-pressure chambers. The samples of this hydride were cooled down to 100 K, recovered to…

20 Nov 2024 at 11:00am

Superconductivity of metal doped-boron-nitrogen clathrates under ambient pressure

by Chen Chen, Junyi Miao, Jingning Zuo, Shi He, and Cheng Lu

The ${\mathrm{LaH}}_{10}$ superconductor has attracted much attention due to its near-room-temperature superconducting transition temperature. However, ${\mathrm{LaH}}_{10}$ requires extremely high pressure, about 200 GPa, to maintain its stability, thereby limiting its potential for industrial appl…

19 Nov 2024 at 11:00am

Importance of London dispersion force in stabilizing $\mathrm{L}{\mathrm{a}}_{3}\mathrm{N}{\mathrm{i}}_{2}{\mathrm{O}}_{7}$ under hydrostatic or anisotropic pressure

by Junhao Peng, Huafeng Dong, Jingyi Zhang, Renhai Wang, Ping Cui, Wei Zhang, and Zhenyu Zhang

Accurate determination of the bilayer structure of the recently discovered high transition temperature superconductor $\mathrm{L}{\mathrm{a}}_{3}\mathrm{N}{\mathrm{i}}_{2}{\mathrm{O}}_{7}$ under pressure is a prerequisite for understanding its electronic properties and revealing its dominant superco…

19 Nov 2024 at 11:00am

Fermi surface reconstruction under pressure in the kagome metal ${\mathrm{CsV}}_{3}{\mathrm{Sb}}_{5}$

by Cole Phillips, Kyryl Shtefiienko, Thinh Nguyen, Andrea N. Capa Salinas, Birendra A. Magar, Ganesh Pokharel, Stephen D. Wilson, David E. Graf, and Keshav Shrestha

This work presents the evolution of the electronic properties of kagome superconductor ${\mathrm{CsV}}_{3}{\mathrm{Sb}}_{5}$ under pressure. The magnetoresistance under high fields of 43 T showed clear Shubnikov–de Haas (SdH) oscillations with multiple frequencies up to 2000 T. With the application …

18 Nov 2024 at 11:00am

Advanced X-ray absorption spectroscopy under high pressures at the ESRF beamline ID12

by Fabrice Wilhelm Andrei Rogalev European Synchrotron Radiation Facility, Grenoble Cedex, France

24 Jul 2024 at 8:16am

New opportunities for high pressure X-ray absorption spectroscopy at ID24-DCM and BM23 with the Extremely Brilliant Source of the ESRF

by A. D. Rosa G. Garbarino J. E. Rodrigues E. Mijit J. Jacobs D. Bugnazet S. Pasternak G. Berruyer A. Moyne C. Clavel F. Perrin S. Anzellini C. Meneghini F. Occelli X. Zhan N. Ishimatsu T. Sakai S. Boccato R. Torchio J.-A. Hernandez C. J. S. Heath S. Dominijanni G. Morard D. Antonangeli S. Petitdemange B. Wehinger M. Mezouar G. Kovalskii W. Morgenroth M. Wilke A. Di Cicco M. A. Bouhifd T. Irifune K. A. Lomachenko O. Mathon a European Synchrotron Radiation Facility, ESRF, Grenoble, Franceb CELLS−ALBA Synchrotron Light Source, Barcelona, Spainc Departamento de F´ısica Aplicada - Instituto de Ciencia de Materiales, Matter at High Pressure (MALTA) Consolider Team, Universidad de Valencia, Edificio de Investigac´ıon, Valencia, Spaind Physics Department, Sapenzia, University of Romee CEA, DAM, DIF, Arpajon, Francef Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima, Japang Geodynamics Research Center, Ehime University, Matsuyama, Japanh Department of Physics, University of Toronto, Toronto, Canadai Sorbonne Université, Muséum National d’Histoire Naturelle, UMR CNRS 7590, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, Paris, Francej Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, IRD, Université Gustave Eiffel, ISTerre, Grenoble, Francek Institut für Geowissenschaften, Universität Potsdam, Potsdam, Germanyl School of Science and Technology, University of Camerino, Camerino, Italym Laboratoire Magmas et Volcans, Université Clermont Auvergne, CNRS–OPGC–IRD, Clermont-Ferrand, France

17 Jun 2024 at 6:38am

High pressure phonon spectroscopy at ESRF: ID28 beamline

by Alexeï Bosak Daniel A. Chaney European Synchrotron Radiation Facility, Grenoble, France

13 Jun 2024 at 9:20am

Nuclear resonance techniques for high-pressure research: example of the ID18 beamline of the European Synchrotron Radiation Facility

by I. Kupenko X. Li S. C. Müller D. Bessas S. Yaroslavtsev G. Aprilis A. I. Chumakov J.-P. Celse R. Rüffer a European Synchrotron Radiation Facility – The European Synchrotron, Grenoble, Franceb Institut für Mineralogie, Universität Münster, Münster, Germany

4 Jul 2024 at 9:08am

Synchrotron x-ray diffraction and DFT study of non-centrosymmetric EuRhGe3 under high pressure

by N. S. Dhami V. Balédent I. Batistić O. Bednarchuk D. Kaczorowski J. P. Itié S. R. Shieh C. M. N. Kumar Y. Utsumi a Department for Research of Materials Under Extreme Conditions, Institute of Physics, Zagreb, Croatiab Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, Orsay, Francec Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatiad Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Polande PSICHÉ beamline, Synchrotron SOLEIL, Saint-Aubin, Francef Department of Earth Sciences, Department of Physics and Astronomy, University of Western Ontario, London, Ontario, Canadag Department of Molecular Magnetism, The Henryk Niewodniczański, Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland

4 Sep 2024 at 4:50am

Use of molybdenum as a pressure calibrant in a cubic press and sound velocity measurement of tungsten to 5 GPa

by Wei Song Chao Liu Chang Su Yonggang Liu a Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People’s Republic of Chinab School of Earth Sciences, Institute of Disaster Prevention, Sanhe, People’s Republic of China

11 Nov 2024 at 6:22am

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