• Pressure cell: In order to apply pressure on the samples up to 2 GPas (~ 20 kbar).

Hydrostatic pressure influence the distance of the atoms in a solid compound and consequently affect the physical properties of the compound; it may even cause a phases transition or reveal new phenomenon. Therefore, the physical properties of the compound can be understood by the invaluable tool.

Many materials can show superconductivity features by pressure application; see for example Refs. [1-6]. This may be compared with the effects of doping impurities (internal pressure); the efforts have been made to simulate the effect of chemical pressure on superconducting transition temperature, T_c, through applied pressure. Variations of T_c under pressure has attracted great attention to advance our understanding of the paring in new superconductors [7].

A 2GPa Pressure cell is designated and developed for studying the electronic properties of various compounds under pressure, in a temperature range of 300 K to 30 K. It is exploited especially for electrical resistivity experiments.

Ref.

[1] Pascal Reiss et al., Quenched nematic criticality and two superconducting domes in an iron-based superconductor, Nature Physics 16 (2020) 89. https://doi.org/10.5287/bodleian:2REyEPKZX.

[2]  P. Ball, Cosmic superconductiviy, Nature material 19 (2020) 490. https://doi.org/10.1038/s41563-020-0671-2

[3] A. Legros et al., Universal T-linear resistivity and Planckian dissipation in overdoped cuprates, Nature Physics 15 (2019) 142. https://doi.org/10.1038/s41567-018-0334-2

[4] S. Arumugam1, et al., Effect of pressure on normal and superconducting state properties of iron based superconductor PrFeAsO0.6Fy (y = 0.12, 0.14), ScientificReports 7 (2017) 11731. https://doi:10.1038/s41598-017-11927-1

[5] F.F. Tafti, et al., Sudden reversal in the pressure dependence of T_c  in the iron-based superconductor KFe₂As₂, Nature Physics 9 (2013) 349. https://doi.org/10.1038/nphys2617

[6] N.D. Mathur, et al., Magnetically mediated superconductivity in heavy fermion compounds, Nature 394 (1998) 39-43. https://doi.org/10.1038/27838.

[7] Eremets gorup: Nature 569 (2019) 528, Superconductivity at 250 K in lanthanum hydride under high pressures, https://doi.org/10.1038/s41586-019-1201-8; ….

• Glovebox:

A sealed container, providing a specific (neutral) atmosphere such as Argon or Nitorgen gases, arranges a desired working atmosphere for sensitive materials.

•  Machine Press  

These works have been fulfilled with Mr. Kambiz Shogi collaboration, Metallurgy engineer.