EHPRG

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.

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

A mid-crustal tipping point between silica-undersaturated and silica-oversaturated magmas
by Caroline R. Soderman


Nature Geoscience, Published online: 01 May 2025; doi:10.1038/s41561-025-01695-3

A narrow range of pressures at mid-crustal depth represents a tipping point between silica-undersaturated and silica-oversaturated compositions crystallizing from mafic melts in alkaline–silicate igneous systems, according to a thermodynamic modelling study.
1 May 2025 at 12:00am

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Isostructural Phase Transition of ${\mathrm{Fe}}_{2}{\mathrm{O}}_{3}$ under Laser Shock Compression
by A. Amouretti et al.
Author(s): A. Amouretti et al.


We present in situ x-ray diffraction and velocity measurements of ${\mathrm{Fe}}_{2}{\mathrm{O}}_{3}$ under laser shock compression at pressures between 38–122 GPa. None of the high-pressure phases reported by static compression studies were observed. Instead, we observed an isostructural phase tran…


[Phys. Rev. Lett. 134, 176102] Published Wed Apr 30, 2025
30 Apr 2025 at 12:00pm
Superconductivity in Trilayer Nickelate ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under Pressure
by Mingxin Zhang et al.
Author(s): Mingxin Zhang et al.


The emergence of superconductivity in the Ruddlesden-Popper phase nickelate La4Ni3O10 around 25 K under high pressure opens new search avenues for unconventional superconductivity in bulk materials.


[Phys. Rev. X 15, 021005] Published Fri Apr 04, 2025
4 Apr 2025 at 12:00pm
Colloquium: Room temperature superconductivity: The roles of theory and materials design
by Warren E. Pickett
Author(s): 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.


[Rev. Mod. Phys. 95, 021001] Published Fri Apr 07, 2023
7 Apr 2023 at 12:00pm
Impact of magnetism on Fe phase diagram under extreme conditions
by Grigory S. Smirnov, Oleg E. Peil, Andrei V. Ruban, Sergei I. Simak, and Anatoly B. Belonoshko
Author(s): Grigory S. Smirnov, Oleg E. Peil, Andrei V. Ruban, Sergei I. Simak, and Anatoly B. Belonoshko


Iron is a major component of the cores of the Earth and inhabited exoplanets. Its phase diagram at extreme pressures (P) and temperatures (T) is the subject of extensive debate. While recent experiments provide evidence for the stability of the body-centered cubic (bcc) phase, several theoretical st…


[Phys. Rev. Materials 9, L040601] Published Wed Apr 23, 2025
23 Apr 2025 at 12:00pm
${\mathrm{Ni}}^{1+δ}$ metallic state and purely $\mathrm{Ni}\text{−}{d}_{{x}^{2}−{y}^{2}}$-occupied Fermi surface in ${\mathrm{SrNiO}}_{2}$-based superlattices at ambient pressure
by Miao Li, Zhenyu Ding, Yuqiang Liu, Liangyu Li, Gang Wu, and Xiaoping Yang
Author(s): Miao Li, Zhenyu Ding, Yuqiang Liu, Liangyu Li, Gang Wu, and Xiaoping Yang


The rich physics of nickelates has garnered widespread attention, particularly for their superconductivity and the prominent $\mathrm{Ni}\text{−}{d}_{{x}^{2}−{y}^{2}}$-dominated Fermi surface. Motivated by the ${\mathrm{Ni}}^{1+δ}$ superconductivity in infinite-layer ${\mathrm{NdNiO}}_{2}$ (${T}_{c}…


[Phys. Rev. Materials 9, 044802] Published Mon Apr 21, 2025
21 Apr 2025 at 12:00pm
Pressure-tuning the spatial extension of polarons and charge mobilities in polar insulators
by Pravin Karna and Ashutosh Giri
Author(s): Pravin Karna and Ashutosh Giri


Originating from the coupling of excess charge with the ionic vibrations, polaron formation is a pervasive phenomenon that has been observed in different types of materials. Depending on their spatial extensions, these quasiparticles have conventionally been categorized into small or large polarons …


[Phys. Rev. Materials 9, 034604] Published Mon Mar 31, 2025
31 Mar 2025 at 12:00pm
Chemical pressure tuning of multipolar and magnetic orders in $\mathrm{B}{\mathrm{a}}_{2}(\mathrm{C}{\mathrm{d}}_{1−x}\mathrm{C}{\mathrm{a}}_{x})\mathrm{Re}{\mathrm{O}}_{6}$ double perovskites
by Koki Shibuya, Daigorou Hirai, and Koshi Takenaka
Author(s): Koki Shibuya, Daigorou Hirai, and Koshi Takenaka


Double perovskite compounds containing $5d$ transition metal elements have been extensively studied as platforms for multipolar order phenomena stemming from spin-orbit-entangled $5d$ electrons. In this study, we examine the interplay between crystal structure, multipolar order, and magnetic order i…


[Phys. Rev. Materials 9, 034406] Published Mon Mar 10, 2025
10 Mar 2025 at 11:00am
Pressure-induced phonon softening and superconductivity in the topological semimetal $\mathrm{Zr}{\mathrm{P}}_{2}$
by Zhuyi Zhang, Xuliang Chen, Shuyang Wang, Chao An, Lili Zhang, Yonghui Zhou, Jian Zhou, and Zhaorong Yang
Author(s): Zhuyi Zhang, Xuliang Chen, Shuyang Wang, Chao An, Lili Zhang, Yonghui Zhou, Jian Zhou, and Zhaorong Yang


In this work, we have systematically investigated the structural, vibrational, and electrical transport properties of topological semimetal $\mathrm{Zr}{\mathrm{P}}_{2}$ under pressure using synchrotron x-ray diffraction (XRD), Raman spectroscopy, electrical resistance, and Hall-effect measurements,…


[Phys. Rev. B 111, 174510] Published Thu May 08, 2025
8 May 2025 at 12:00pm
Orbital selectivity in electronic correlations and spin instabilities in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
by Min Liu and Xiaohong Shao
Author(s): Min Liu and Xiaohong Shao


Recently, the signatures of superconductivity with ${T}_{c}\phantom{\rule{4pt}{0ex}}≈$ 80 K in pressured ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ has garnered significant attention, which makes it a new candidate of the high-temperature superconductors dominated by $3d$ transition elemen…


[Phys. Rev. B 111, 195116] Published Thu May 08, 2025
8 May 2025 at 12:00pm
Pressure-induced enhancement of polar distortions in a metal and implications for the Rashba spin splitting
by Evie Ladbrook, Urmimala Dey, Nicholas C. Bristowe, Robin S. Perry, Dominik Daisenberger, Mark R. Warren, and Mark S. Senn
Author(s): Evie Ladbrook, Urmimala Dey, Nicholas C. Bristowe, Robin S. Perry, Dominik Daisenberger, Mark R. Warren, and Mark S. Senn


Polar metals are an intriguing class of materials that feature a polar crystal structure while also exhibiting metallic conductivity. The unique properties of polar metals challenge expectations, making way for the exploration of exotic phenomena such as unconventional magnetism, hyperferroelectric …


[Phys. Rev. B 111, 205110] Published Wed May 07, 2025
7 May 2025 at 12:00pm
Exploring the exciton insulator state in $1\text{T-TiS}{\mathrm{e}}_{2}$ monolayer with advanced electronic structure methods
by Hong Tang, Li Yin, Gábor I. Csonka, and Adrienn Ruzsinszky
Author(s): Hong Tang, Li Yin, Gábor I. Csonka, and Adrienn Ruzsinszky


The layered transition metal dichalcogenide $1\text{T-TiS}{\mathrm{e}}_{2}$ is of great research interest, having intriguing properties of charge density waves (CDWs) and superconductivity under doping or pressure. The monolayer form of $1\text{T-TiS}{\mathrm{e}}_{2}$ also shows a CDW with a higher …


[Phys. Rev. B 111, L201401] Published Wed May 07, 2025
7 May 2025 at 12:00pm
Chemical pressure effects on the physical properties of the quasicrystal approximants ${\mathrm{GdCd}}_{6−x}{\mathrm{Zn}}_{x}$
by J. Munevar, K. V. R. A. Silva, M. S. Dutra, F. Fabris, E. Padrón-Hernández, J. N. B. Rodrigues, and M. Cabrera-Baez
Author(s): J. Munevar, K. V. R. A. Silva, M. S. Dutra, F. Fabris, E. Padrón-Hernández, J. N. B. Rodrigues, and M. Cabrera-Baez


Quasicrystal approximants (QCAs) are a class of crystalline materials that share structural and electronic similarities with quasicrystals while maintaining periodicity. Here we report on the structural, thermodynamic, electronic, magnetic, and transport properties of the QCAs of ${\mathrm{GdCd}}_{6…


[Phys. Rev. B 111, 174408] Published Tue May 06, 2025
6 May 2025 at 12:00pm
Effective model and pairing tendency in the bilayer Ni-based superconductor ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
by Yuhao Gu, Congcong Le, Zhesen Yang, Xianxin Wu, and Jiangping Hu
Author(s): Yuhao Gu, Congcong Le, Zhesen Yang, Xianxin Wu, and Jiangping Hu


Since the discovery of cuprates, the origin of high-${T}_{c}$ superconductivity has been an outstanding puzzle. Recently, high-${T}_{c}$ superconductivity was observed in a bilayer nickelate ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ under pressure, whose structure hosts the apical oxygen …


[Phys. Rev. B 111, 174506] Published Mon May 05, 2025
5 May 2025 at 12:00pm
In situ electrical conductivity measurement of saturated rocks at shallow crustal temperatures and pressures in an autoclave
by Chaoyi Xiao Shuangming Shan Heping Li Sen Lin Shengbin Li 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 University of Chinese Academy of Sciences, Beijing, People’s Republic of China
Volume 45, Issue 1, March 2025, Page 57-66
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24 Dec 2024 at 7:38am
Temperature gradients in high pressure multi-anvil cell
by Takuya Moriguti Akira Yoneda Eiji Ito a Institute for Planetary Materials, Okayama University, Misasa, Tottori, Japanb Department of Earth and Space Science, Osaka University, Toyonaka, Osaka, Japan
Volume 45, Issue 1, March 2025, Page 1-16
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19 Dec 2024 at 1:29pm
Pressure-sensitive germanate glass-Li2GeO3, a multifunctional energy material: a theoretical study
by R. Zosiamliana L. Celestine Lalhriat Zuala B. Chettri Zodin Mawia G. Abdurakhmanov A. Laref Shalika R. Bhandari D. P. Rai a Physical Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl, Indiab Department of Physics, Mizoram University, Aizawl, Indiac Department of Physics, North-Eastern Hill University, Shillong, Indiad National University of Uzbekistan, Tashkent, Uzbekistane Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabiaf Department of Physics, Bhairahawa Multiple Campus, Tribhuvan University, Rupandehi, Nepal
Volume 45, Issue 1, March 2025, Page 29-56
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25 Dec 2024 at 7:29am
High pressure behavior of incommensurately modulated nyerereite structure
by N. Bogdanov S. Rashchenko P. Gavryushkin V. Thomas D. Fursenko Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia
Volume 45, Issue 1, March 2025, Page 67-78
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27 Dec 2024 at 8:15am
Crystalline state in a pressure region of proceeding amorphization of SnI4
by Kazuhiro Fuchizaki Hiroki Naruta Fumiya Sato Tomohiro Ohuchi Akio Suzuki a Department of Physics, Ehime University, Matsuyama, Japanb Graduate School of Science and Engineering, Ehime University, Matsuyama, Japanc Geodynamics Research Center, Ehime University, Matsuyama, Japand Department of Earth Science, Tohoku University, Sendai, Japan
Volume 45, Issue 1, March 2025, Page 90-107
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13 Jan 2025 at 12:09pm
High pressure Raman spectroscopy of boron-rich boron carbides up to 50 GPa
by Raimundas Sereika Seth Iwan Paul A. Baker Yogesh K. Vohra Department of Physics, University of Alabama at Birmingham, Birmingham, AL, USA
Volume 45, Issue 1, March 2025, Page 79-89
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6 Jan 2025 at 8:55am
Disruption of Lipomyces starkeyi cells grown in hydrolyzed cheese-whey by high pressure homogenization for enhancing lipid extraction
by Ayşe Alara Batıgün Hami Alpas Deniz Cekmecelioglu Department of Food Engineering, Middle East Technical University, Ankara, Turkey
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13 Mar 2025 at 11:57am
The magnetism and elasticity of ϵ-FeOOH across the pressure-induced electronic spin transition
by Osamu Ikeda Tatsuya Sakamaki Takaya Mitsui Kosuke Fujiwara Hiroshi Uchiyama Hiroshi Fukui Daisuke Ishikawa Alfred Q.R. Baron Akio Suzuki a Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japanb Kansai Institute for Photon Science, National Institute for Quantum Science and Technology, Sayo, Japanc Japan Synchrotron Radiation Research Institute, Sayo, Japand Materials Dynamics Laboratory, RIKEN SPring-8 Center, Sayo, Japan
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19 Feb 2025 at 7:57am
Irreversible changes in amorphous C₃N₄ under pressure: loss of chemical order and graphite-like character
by Murat Durandurdu Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Türkiye
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21 Apr 2025 at 5:23am