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.

Interplay of actin nematodynamics and anisotropic tension controls endothelial mechanics
by Claire A. Dessalles


Nature Physics, Published online: 18 April 2025; doi:10.1038/s41567-025-02847-3

Blood flow through a vessel deforms vessel walls. Cells lining these walls sense the changes in pressure as blood flows and reorient their actin fibres in the direction of largest tension.
18 Apr 2025 at 12:00am

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Strong Intrinsic Longitudinal Coupling in Circuit Quantum Electrodynamics
by C. A. Potts, R. C. Dekker, S. Deve, E. W. Strijbis, and G. A. Steele
Author(s): C. A. Potts, R. C. Dekker, S. Deve, E. W. Strijbis, and G. A. Steele


Radiation-pressure interactions between harmonic oscillators have enabled exquisite measurement precision and control, made possible by using strong sideband drives, enhancing the coupling rate while also linearizing the interaction. In this Letter, we demonstrate a strong intrinsic longitudinal cou…


[Phys. Rev. Lett. 134, 153603] Published Fri Apr 18, 2025
18 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
Removal of excess iron by annealing processes and emergence of bulk superconductivity in sulfur-substituted FeTe
by Ryosuke Kurihara, Ryusuke Kogure, Tomotaka Ota, Yuto Kinoshita, Satoshi Hakamada, Masashi Tokunaga, and Hiroshi Yaguchi
Author(s): Ryosuke Kurihara, Ryusuke Kogure, Tomotaka Ota, Yuto Kinoshita, Satoshi Hakamada, Masashi Tokunaga, and Hiroshi Yaguchi


There are several strategies to discover new superconductors. Growing new materials and applying high pressures have been the classic ways since superconductivity was found. Also, chemical processing, such as annealing, is another way to induce superconductivity in a nonsuperconducting material. Her…


[Phys. Rev. Materials 9, 034802] Published Wed Mar 05, 2025
5 Mar 2025 at 11:00am
Pressure-driven solid–solid phase transformations of isotropic particles across diverse crystal structure types
by Hongjin Du, Hillary Pan, and Julia Dshemuchadse
Author(s): Hongjin Du, Hillary Pan, and Julia Dshemuchadse


Pressure-induced phase transformations are widely observed in crystalline materials, attracting interest across diverse fields from superconductors to pharmaceuticals. However, studying the mechanisms of these transformations in situ, with sufficient spatial and temporal resolution, remains a challe…


[Phys. Rev. Materials 9, 033401] Published Tue Mar 04, 2025
4 Mar 2025 at 11:00am
Tunable Dirac nodal line in orthorhombic ${\mathrm{RuO}}_{2}$
by Ece Uykur, Oleg Janson, Victoria A. Ginga, Marcus Schmidt, Nico Giordano, and Alexander A. Tsirlin
Author(s): Ece Uykur, Oleg Janson, Victoria A. Ginga, Marcus Schmidt, Nico Giordano, and Alexander A. Tsirlin


Hydrostatic pressure lowers the symmetry of RuO2 and controls the amount of orthorhombic strain in this material. The structural transformation upon compression is traced via single-crystal x-ray diffraction combined with ab initio calculations. It is shown that pressurized RuO2 does not become altermagnetic, but it retains the key feature of the parent tetragonal phase, the Dirac nodal line that can be shifted across the Fermi level by varying pressure.


[Phys. Rev. B 111, 134114] Published Thu Apr 24, 2025
24 Apr 2025 at 12:00pm
Low viscosity of solid MgO at high pressures and strain rates measured using the laser-driven Richtmyer-Meshkov instability
by Tyler M. Perez, Sonya C. Dick, Raymond F. Smith, Peter M. Celliers, Jon H. Eggert, Suzanne J. Ali, Eric Johnsen, and June K. Wicks
Author(s): Tyler M. Perez, Sonya C. Dick, Raymond F. Smith, Peter M. Celliers, Jon H. Eggert, Suzanne J. Ali, Eric Johnsen, and June K. Wicks


Solids are often assumed to behave as viscous fluids under high-strain rates. This behavior has been studied experimentally in metals but largely unexplored in brittle ceramic materials. In this study, we present a technique for measuring the viscosity of MgO using time-resolved velocimetry to track…


[Phys. Rev. B 111, 144108] Published Wed Apr 23, 2025
23 Apr 2025 at 12:00pm
Superconductivity in ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under pressure
by Chen Lu, Zhiming Pan, Fan Yang, and Congjun Wu
Author(s): Chen Lu, Zhiming Pan, Fan Yang, and Congjun Wu


The discovery of superconductivity (SC) in the trilayer nickelate compound ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under pressure has generated significant interest. In this work, we propose a trilayer two ${E}_{g}$-orbital $t\text{−}{J}_{∥}\text{−}{J}_{⊥}$ model to investigate the mic…


[Phys. Rev. B 111, 134515] Published Tue Apr 22, 2025
22 Apr 2025 at 12:00pm
Elastic properties of the ${\mathrm{W}}_{0.75}\mathrm{R}{\mathrm{e}}_{0.25}$ alloy at high pressure up to 183 GPa
by O. S. Pardo, P. Söderlind, R. E. Lim, C. C. Zurkowski, J. S. Smith, Zs. Jenei, and E. F. O’Bannon, III
Author(s): O. S. Pardo, P. Söderlind, R. E. Lim, C. C. Zurkowski, J. S. Smith, Zs. Jenei, and E. F. O’Bannon, III


The high pressure equation of state for the ${\mathrm{W}}_{0.75}\mathrm{R}{\mathrm{e}}_{0.25}$ alloy is experimentally determined up to 183 GPa with synchrotron angle-dispersive powder x-ray diffraction in the diamond-anvil cell and to ∼925 GPa with density-functional theory. W-Re alloys are used in…


[Phys. Rev. B 111, 134110] Published Mon Apr 21, 2025
21 Apr 2025 at 12:00pm
Ternary nickel hydrides: A platform for unconventional superconductivity and quantum magnetism
by Mateusz Domański, Antonio Santacesaria, Paolo Barone, José Lorenzana, and Wojciech Grochala
Author(s): Mateusz Domański, Antonio Santacesaria, Paolo Barone, José Lorenzana, and Wojciech Grochala


Hydrides are famous for the possibility of reaching high-${T}_{\mathrm{c}}$ superconductivity under high pressure within a conventional mechanism. Here we propose ternary nickel hydrides $M\mathrm{Ni}{\mathrm{H}}_{2}$ ($M=\mathrm{Li}$, Na) as materials that mirror key aspects of unconventional super…


[Phys. Rev. B 111, 165137] Published Mon Apr 21, 2025
21 Apr 2025 at 12:00pm
Lithium-bismuth compounds with superconducting and superionic states at high pressure
by Pei Zhou, Yang Ni, Junjie Wang, Yu Han, Yuhang Li, Qing Lu, Zhongwei Zhang, Xiaomeng Wang, and Jian Sun
Author(s): Pei Zhou, Yang Ni, Junjie Wang, Yu Han, Yuhang Li, Qing Lu, Zhongwei Zhang, Xiaomeng Wang, and Jian Sun


Lithium-rich compounds offer exciting opportunities to explore novel high-pressure phenomena, with their structural, electronic, superconducting, and superionic behaviors attracting increasing attention. Here, using crystal structure prediction and first-principles calculations, we identify three st…


[Phys. Rev. B 111, 134109] Published Fri Apr 18, 2025
18 Apr 2025 at 12:00pm
Effect of quantum anharmonicity on the superconductivity of $I\overline{4}3m {\mathrm{CH}}_{4}\text{−}{\mathrm{H}}_{3}\mathrm{S}$ at high pressures: A first-principles study
by Pugeng Hou, Francesco Belli, Tiange Bi, Eva Zurek, and Ion Errea
Author(s): Pugeng Hou, Francesco Belli, Tiange Bi, Eva Zurek, and Ion Errea


Making use of first-principles calculations, we analyze the effect of quantum ionic fluctuations and lattice anharmonicity on the crystal structure and superconductivity of $I\overline{4}3m {\mathrm{CH}}_{4}\text{−}{\mathrm{H}}_{3}\mathrm{S}$, one of the lowest enthalpy structures in the C-S-H syste…


[Phys. Rev. B 111, 144509] Published Fri Apr 18, 2025
18 Apr 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