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.

Immediate past EHPRG Meeting

 


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.
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.

    Drift-free iontronic sensing enabled by a creep-free polyelectrolyte elastomer

    Nature Materials, Published online: 10 April 2024; doi:10.1038/s41563-024-01851-x

    Soft pressure sensors drift under prolonged high stress because of the creep of soft materials, which causes inaccurate measurements. Now, through molecular-level design, a leakage-free and creep-free polyelectrolyte elastomer is synthesized, and an iontronic sensor using the polyelectrolyte elastomer shows very low signal drift under a high static pressure.
    10 Apr 2024 at 12:00am
    Kinetic coevolutionary models predict the temporal emergence of HIV-1 resistance mutations under drug selection pressure
    by Avik BiswasIndrani ChoudhuriEddy ArnoldDmitry LyumkisAllan HaldaneRonald M. LevyaCenter for Biophysics and Computational Biology, College of Science and Technology, Temple University, Philadelphia, PA 19122bLaboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, CA 92037cDepartment of Physics, University of California San Diego, La Jolla, CA 92093dDepartment of Chemistry, Temple University, Philadelphia, PA 19122eDepartment of Chemistry and Chemical Biology, Center for Advanced Biotechnology and Medicine, Rutgers University, Piscataway, NJ 08854fGraduate School of Biological Sciences, Department of Molecular Biology, University of California San Diego, La Jolla, CA 92093gDepartment of Physics, Temple University, Philadelphia, PA 19122
    Proceedings of the National Academy of Sciences, Volume 121, Issue 15, April 2024.

    1 Apr 2024 at 9:00am

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    Exotic Magnetism in Perovskite ${\mathrm{KOsO}}_{3}$
    by Jie Chen, Hongze Li, Javier Gainza, Angel Muñoz, Jose A. Alonso, Jue Liu, Yu-Sheng Chen, Alexei A. Belik, Kazunari Yamaura, Jiaming He, Xinyu Li, John B. Goodenough, and J.-S. Zhou
    Author(s): Jie Chen, Hongze Li, Javier Gainza, Angel Muñoz, Jose A. Alonso, Jue Liu, Yu-Sheng Chen, Alexei A. Belik, Kazunari Yamaura, Jiaming He, Xinyu Li, John B. Goodenough, and J.-S. Zhou

    A new perovskite ${\mathrm{KOsO}}_{3}$ has been stabilized under high-pressure and high-temperature conditions. It is cubic at 500 K ($Pm−3m$) and undergoes subsequent phase transitions to tetragonal at 320 K ($P4/mmm$) and rhombohedral ($R−3m$) at 230 K as shown from refining synchrotron x-ray powd…


    [Phys. Rev. Lett. 132, 156701] Published Tue Apr 09, 2024
    9 Apr 2024 at 12:00pm
    Interlayer-Coupling-Driven High-Temperature Superconductivity in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ under Pressure
    by Chen Lu, Zhiming Pan, Fan Yang, and Congjun Wu
    Author(s): Chen Lu, Zhiming Pan, Fan Yang, and Congjun Wu

    The newly discovered high-temperature superconductivity in ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ under pressure has attracted a great deal of attention. The essential ingredient characterizing the electronic properties is the bilayer ${\mathrm{NiO}}_{2}$ planes coupled by the interlay…


    [Phys. Rev. Lett. 132, 146002] Published Fri Apr 05, 2024
    5 Apr 2024 at 12:00pm
    Pressure-Induced Superconductivity In Polycrystalline ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7−δ}$
    by G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng
    Author(s): G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng

    Researchers have measured a zero-resistance state for the nickelate La3Ni2O7, which measurements suggest may superconduct at temperatures above the boiling point of liquid nitrogen.


    [Phys. Rev. X 14, 011040] Published Thu Mar 07, 2024
    7 Mar 2024 at 11:00am
    Smectic and Soap Bubble Optofluidic Lasers
    by Zala Korenjak and Matjaž Humar
    Author(s): Zala Korenjak and Matjaž Humar

    Using a soap bubble, researchers have created a laser that could act as a sensitive sensor for environmental parameters including atmospheric pressure.


    [Phys. Rev. X 14, 011002] Published Fri Jan 05, 2024
    5 Jan 2024 at 11:00am
    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
    Structural routes to stabilize superconducting ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ at ambient pressure
    by Luke C. Rhodes and Peter Wahl
    Author(s): Luke C. Rhodes and Peter Wahl

    The bilayer perovskite ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ has recently been found to enter a superconducting state under hydrostatic pressure at temperatures as high as 80 K. The onset of superconductivity is observed concurrent with a structural transition which suggests that supe…


    [Phys. Rev. Materials 8, 044801] Published Tue Apr 09, 2024
    9 Apr 2024 at 12:00pm
    Polymorphism of two-dimensional antiferromagnets, ${\mathrm{AgF}}_{2}$ and ${\mathrm{CuF}}_{2}$
    by Daniel Jezierski and Wojciech Grochala
    Author(s): Daniel Jezierski and Wojciech Grochala

    We present a theoretical study of relative stability, as well as of the magnetic and electronic properties, of ${\mathrm{AgF}}_{2}$ and ${\mathrm{CuF}}_{2}$, in two related structural forms: orthorhombic (ambient pressure form of ${\mathrm{AgF}}_{2}$) and monoclinic (ambient pressure form of ${\math…


    [Phys. Rev. Materials 8, 034407] Published Tue Mar 26, 2024
    26 Mar 2024 at 11:00am
    Temperature-induced structural and electronic phase transitions in λ-phase $\mathrm{T}{\mathrm{i}}_{3}{\mathrm{O}}_{5}$
    by K. Yoshimatsu, H. Nakao, and H. Kumigashira
    Author(s): K. Yoshimatsu, H. Nakao, and H. Kumigashira

    Metastable λ-Ti3O5, which undergoes phase transition to other polymorphs by external stimuli such as light, pressure, and temperature, is a candidate material for optolectronic and heat-storage devices. Here, the authors investigate the changes in the electrical and structural properties of λ-Ti3O5 with a single-crystalline thin film form across the temperature-induced phase transition. Resistivity and synchrotron X-ray diffraction measurements unveils a complex phase diagram divided into three temperature regions, which is composed of metal-insulator transition and second-order structural phase transition.


    [Phys. Rev. Materials 8, 035002] Published Wed Mar 13, 2024
    13 Mar 2024 at 11:00am
    Electronic structure of nitrogen-doped lutetium hydrides
    by Adam Denchfield, Hyowon Park, and Russell J. Hemley
    Author(s): Adam Denchfield, Hyowon Park, and Russell J. Hemley

    Hydrides at high pressures constitute the only materials to be superconducting above 200 K, and are typically marked by an appreciable hydrogen density of states and van Hove singularities at the Fermi energy. Given the recent interest in nitrogen-doped lutetium hydride, the authors focused on finding the structures which would have electronic properties that could plausibly support high-temperature superconductivity within a narrow pressure range. They have identified a narrow range of stoichiometries Lu8H23−xN with hydrogen-dominant conduction states, and found one structure which exhibits a very large hydrogen density of states with an extremely sharp van Hove singularity, whose properties may therefore change dramatically under pressure.


    [Phys. Rev. Materials 8, L021801] Published Fri Feb 16, 2024
    16 Feb 2024 at 11:00am
    Impact of $\mathrm{CaC}{\mathrm{l}}_{2}$-induced chemical pressure on the phase transition of ${\mathrm{H}}_{2}\mathrm{O}$ at high pressure
    by Xinmiao Wei, Xinyang Li, Zihan Zhang, Hanns-Peter Liermann, Sergio Speziale, Mengqiong Pu, Caizi Zhang, Ruiyu Li, Hongyu Yu, Liang Li, Fangfei Li, and Qiang Zhou
    Author(s): Xinmiao Wei, Xinyang Li, Zihan Zhang, Hanns-Peter Liermann, Sergio Speziale, Mengqiong Pu, Caizi Zhang, Ruiyu Li, Hongyu Yu, Liang Li, Fangfei Li, and Qiang Zhou

    Understanding the phase behavior and structural properties of salt water at high pressures is essential for understanding the dynamics and physical characteristics of icy planets. In this study, we employed high-pressure experimental and ab initio simulation techniques to investigate the impact of $…


    [Phys. Rev. B 109, 134108] Published Fri Apr 12, 2024
    12 Apr 2024 at 12:00pm
    Electronic structure and vibrational stability of copper-substituted lead apatite LK-99
    by J. Cabezas-Escares, Nicolás F. Barrera, Robert H. Lavroff, Anastassia N. Alexandrova, C. Cardenas, and F. Munoz
    Author(s): J. Cabezas-Escares, Nicolás F. Barrera, Robert H. Lavroff, Anastassia N. Alexandrova, C. Cardenas, and F. Munoz

    Two recent preprints [Lee et al., arXiv:2307.12008 and Lee et al., arXiv:2307.12037] have received attention because they claim experimental evidence that a Cu-substituted apatite material (dubbed LK-99) exhibits superconductivity at room temperature and pressure. If this proves to be true, LK-99 …


    [Phys. Rev. B 109, 144515] Published Fri Apr 12, 2024
    12 Apr 2024 at 12:00pm
    Theoretical analysis on the possibility of superconductivity in the trilayer Ruddlesden-Popper nickelate ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under pressure and its experimental examination: Comparison with ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
    by Hirofumi Sakakibara, Masayuki Ochi, Hibiki Nagata, Yuta Ueki, Hiroya Sakurai, Ryo Matsumoto, Kensei Terashima, Keisuke Hirose, Hiroto Ohta, Masaki Kato, Yoshihiko Takano, and Kazuhiko Kuroki
    Author(s): Hirofumi Sakakibara, Masayuki Ochi, Hibiki Nagata, Yuta Ueki, Hiroya Sakurai, Ryo Matsumoto, Kensei Terashima, Keisuke Hirose, Hiroto Ohta, Masaki Kato, Yoshihiko Takano, and Kazuhiko Kuroki

    We study the possibility of superconductivity in a trilayer Ruddlesden-Popper nickelate ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ under pressure both theoretically and experimentally, making comparison with the recently discovered high ${T}_{c}$ superconductor ${\mathrm{La}}_{3}{\mathrm{…


    [Phys. Rev. B 109, 144511] Published Wed Apr 10, 2024
    10 Apr 2024 at 12:00pm
    High-temperature superconductivity of boron-carbon clathrates at ambient pressure
    by Junda Li, Jincheng Yue, Siqi Guo, Ao Zhang, Li Zhu, Hao Song, Zhao Liu, Yanhui Liu, and Tian Cui
    Author(s): Junda Li, Jincheng Yue, Siqi Guo, Ao Zhang, Li Zhu, Hao Song, Zhao Liu, Yanhui Liu, and Tian Cui

    The successful synthesis of the carbon-boron clathrate ${\mathrm{SrB}}_{3}{\mathrm{C}}_{3}$ under high-pressure conditions of 50 GPa opens up a new possibility for exploring high-temperature superconductors at ambient pressure. Based on the first-principle calculation, we designed a class of ${\math…


    [Phys. Rev. B 109, 144509] Published Tue Apr 09, 2024
    9 Apr 2024 at 12:00pm
    Sound velocity of α-quartz under pressure: First-principles calculations
    by Zhi-Xin Bai, Xin Qu, Cheng-Lu Jiang, Zheng-Tang Liu, and Qi-Jun Liu
    Author(s): Zhi-Xin Bai, Xin Qu, Cheng-Lu Jiang, Zheng-Tang Liu, and Qi-Jun Liu

    As the most abundant substance on the earth's crust, the behavior of α-quartz under pressure has always been a research hotspot, which has inherent crystallographic significance and is of significance to understanding the rocky parts of the earth. This paper provides the discussion about the stabili…


    [Phys. Rev. B 109, 144105] Published Mon Apr 08, 2024
    8 Apr 2024 at 12:00pm
    High-pressure synthesis of half-doped perovskites MnV0.5Nb0.5O3 and MnV0.5Ta0.5O3 with unusual A-site small Mn2+ cations
    by Xun KangHiroaki HayashiAlexei A. BelikYoshihiro TsujimotoKazunari Yamauraa Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki, Japanb Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
    Volume 44, Issue 1, March 2024, Page 25-37
    .

    21 Nov 2023 at 6:09am
    Scintillator efficiency enhancement potential consequent to the pressure-dependent electronic, optical and elastic properties of CaI2: first-principles calculations
    by Pradeep KumarAgnikumar G. Vedeshwara Department of Physics, Hansraj College, University of Delhi, Delhi, Indiab Thin Film Laboratory, Department of Physics & Astrophysics, University of Delhi, Delhi, India
    Volume 44, Issue 1, March 2024, Page 69-83
    .

    2 Feb 2024 at 7:12am
    Simultaneous compression of NaCl, Au, and ruby: toward mutually consistent pressure scales
    by Yanbin WangGuoyin ShenJesse S. Smitha Center for Advanced Radiation Sources, The University of Chicago, Argonne, IL, USAb HPCAT, X-Ray Science Division, Argonne National Laboratory, Argonne, IL, USA
    Volume 44, Issue 1, March 2024, Page 53-68
    .

    9 Jan 2024 at 3:57am
    Effect of incubation temperature after high hydrostatic pressure treatment of Escherichia coli on the detection of injured populations
    by Yoshiko NakauraClaudia SokKazuya MorimatsuKazutaka Yamamotoa Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba, Japanb Food Technology and Biotechnology, Technical University of Munich, Munich, Germanyc Faculty of Agriculture, Ehime University, Matsuyama, Japan
    .

    4 Apr 2024 at 9:13am
    Structure and properties of a quasi-one-dimensional compound BaTiS3 under pressure
    by L. C. FuW. J. ChengY. LiuL. C. ShiY. PengJ. ZhangZ. W. LiX. D. LiJ. L. ZhuX. C. WangC. Q. Jina Department of Physics, Southern University of Science and Technology, Shenzhen, People's Republic of Chinab Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of Chinac School of Physics, University of Chinese Academy of Sciences, Beijing, People's Republic of Chinad Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
    .

    11 Mar 2024 at 5:32am