Methods to simplify cooling of liquid Helium cryostats

Montoya, Rafael Álvarez; Delgado, Sara; Castilla, J. M.; Navarrete, José; Contreras, Nuria Díaz; Marijuan, Juan Ramón; Barrena, Víctor; Guillamón, Isabel; Suderow, Hermann

doi:10.1016/j.ohx.2019.e00058

Cited by 8 publications

(5 citation statements)

References 13 publications

(20 reference statements)

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“…Resistivity measurements have been performed using the four probe AC method, with four electrical contacts made by gluing 25 μm gold wires with silver epoxy on the cleaved surface of LaRu 2 P 2 samples. For MR measurements, we have used a cryostat with base temperature 1 K and equipped with a 20 + 2 T superconducting magnet [23][24][25]. Resistivity was measured using a SR 830 lock-in amplifier.…”

Section: Methodsmentioning

confidence: 99%

Large magnetoresistance in the iron-free pnictide superconductor LaRu₂P₂

Fernández-Lomana¹,

Barrena²,

Wu³

et al. 2021

J. Phys.: Condens. Matter

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The magnetoresistance (MR) of iron pnictide superconductors is often dominated by electron–electron correlations and deviates from the H 2 or saturating behaviors expected for uncorrelated metals. Contrary to similar Fe-based pnictide systems, the superconductor LaRu2P2 (T c = 4 K) shows no enhancement of electron–electron correlations. Here we report a non-saturating MR deviating from the H 2 or saturating behaviors in LaRu2P2. We present results in single crystals of LaRu2P2, where we observe a MR following H 1.3 up to 22 T. We discuss our result by comparing the bandstructure of LaRu2P2 with that of Fe based pnictide superconductors. The different orbital structures of Fe and Ru leads to a 3D Fermi surface with negligible bandwidth renormalization in LaRu2P2, that contains a large open sheet over the whole Brillouin zone. We show that the large MR in LaRu2P2 is unrelated to the one obtained in materials with strong electron–electron correlations and that it is compatible instead with conduction due to open orbits on the rather complex Fermi surface structure of LaRu2P2.

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Section: Methodsmentioning

confidence: 99%

Large magnetoresistance in the iron-free pnictide superconductor LaRu₂P₂

Fernández-Lomana¹,

Barrena²,

Wu³

et al. 2021

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

show abstract

“…Resistivity measurements have been performed using the four probe AC method, with four electrical contacts made by gluing 25 µm gold wires with silver epoxy on the cleaved surface of LaRu 2 P 2 samples. For magnetoresistance measurements, we have used a cryostat with base temperature 1 K and equipped with a 20+2 T superconducting magnet [21][22][23]. Resistivity was measured using a SR 830 lock-in amplifier.…”

Section: Methodsmentioning

confidence: 99%

Large magnetoresistance in the iron-free pnictide superconductor LaRu$_2$P$_2$

Fernández-Lomana¹,

Barrena²,

Wu³

et al. 2020

Preprint

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The magnetoresistance of iron pnictide superconductors is often dominated by electron-electron correlations and deviates from the H 2 or saturating behaviors expected for uncorrelated metals.Contrary to similar Fe-based pnictide systems, the superconductor LaRu 2 P 2 (T c = 4 K) shows no enhancement of electron-electron correlations. Here we report a non-saturating magnetoresistance deviating from the H 2 or saturating behaviors in LaRu 2 P 2 . We have grown and characterized high quality single crystals of LaRu 2 P 2 and measured a magnetoresistance following H 1.3 up to 22 T. We discuss our result by comparing the bandstructure of LaRu 2 P 2 with Fe based pnictide superconductors. The different orbital structures of Fe and Ru leads to a 3D Fermi surface with negligible bandwidth renormalization in LaRu 2 P 2 , that contains a large open sheet over the whole Brillouin zone. We show that the large magnetoresistance in LaRu 2 P 2 is unrelated to the one obtained in materials with strong electron-electron correlations and that it is compatible instead with conduction due to open orbits on the rather complex Fermi surface structure of LaRu 2 P 2 .

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“…Another highly valuable mineral resource that can be produced in rift systems is helium gas, a crucial cooling agent (Montoya et al, 2019). A highly strategic non-renewable resource, helium is normally extracted from rocks in felsic cratons, which accumulate the gas that is generated as a by-product of uranium and thorium decay (Hand, 2016).…”

Section: Helium Gasmentioning

confidence: 99%

(D)rifting in the 21^st century: Key processes, natural hazards and geo-resources

Zwaan,

Alves,

Cadenas

et al. 2023

Preprint

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Abstract. Rifting and continental break-up is a key research topic within geosciences, and a thorough understanding of the processes involved, as well as of the associated natural hazard and natural resources is of great importance to both science and society. As a result, a large body of knowledge is available in the literature, yet most of previous research focuses on tectonic and geodynamic processes and their links to the evolution of rift systems. However, we believe that the key challenge for researchers is to make our knowledge of rift systems available and applicable to face new societal challenges. In particular, we should embrace a system analysis approach, and aim to apply our knowledge to better understand the links between rift processes, natural hazards, and the geo-resources that are of critical importance to realize the energy transition and a sustainable future. The aim of this paper is therefore to provide a first-order framework for such an approach, by providing an up-to-date summary of rifting processes, hazards, and geo-resources, followed by an assessment of future challenges and opportunities for research. We address the varied terminology used to characterise rifting in the scientific literature, followed by a description of rifting processes with a focus on the impact of (1) rheology and stain rates, (2) inheritance in three dimensions, (3) magmatism, and (4) surface processes. Subsequently, we address the considerable natural hazards and risks that occur in rift settings, which are linked to (I) seismicity, (II) magmatism, and (III) mass wasting, and provide some insights in how the impacts of these hazards can be mitigated. Moreover, we classify and describe the geo-resources occurring in rift environments as (a) non-energy resources, (b) geo-energy resources, (c) water and soils, and (d) opportunities for geological storage. Finally, we discuss the key challenges for the future linked to the aforementioned themes, and identify numerous opportunities for follow-up research and knowledge application. In particular, we see great potential in systematic knowledge transfer and collaboration between researchers, industry partners and government bodies, which may be the key to future successes and advancements.

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Methods to simplify cooling of liquid Helium cryostats

Cited by 8 publications

References 13 publications

Large magnetoresistance in the iron-free pnictide superconductor LaRu₂P₂

Large magnetoresistance in the iron-free pnictide superconductor LaRu₂P₂

Large magnetoresistance in the iron-free pnictide superconductor LaRu$_2$P$_2$

(D)rifting in the 21^st century: Key processes, natural hazards and geo-resources

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Methods to simplify cooling of liquid Helium cryostats

Cited by 8 publications

References 13 publications

Large magnetoresistance in the iron-free pnictide superconductor LaRu2P2

Large magnetoresistance in the iron-free pnictide superconductor LaRu2P2

Large magnetoresistance in the iron-free pnictide superconductor LaRu$_2$P$_2$

(D)rifting in the 21st century: Key processes, natural hazards and geo-resources

Contact Info

Product

Resources

About

Large magnetoresistance in the iron-free pnictide superconductor LaRu₂P₂

Large magnetoresistance in the iron-free pnictide superconductor LaRu₂P₂

(D)rifting in the 21^st century: Key processes, natural hazards and geo-resources