Anisotropic superconductivity in the quasi-one-dimensional superconductor

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{
  "created": "2025-03-18T14:29:58.383779+00:00", 
  "revision": 7, 
  "updated": "2025-03-19T15:17:44.115721+00:00", 
  "id": "2605", 
  "metadata": {
    "is_last": true, 
    "doi": "10.24435/materialscloud:d5-x1", 
    "license": "Creative Commons Attribution 4.0 International", 
    "license_addendum": null, 
    "references": [
      {
        "citation": "Scientific Reports (accepted)", 
        "type": "Journal reference"
      }
    ], 
    "description": "The intermetallic quasi-one-dimensional binary superconductor V<sub>2</sub>Ga<sub>5</sub> was recently found to exhibit a topologically nontrivial normal state, making it a natural candidate for a topological superconductor.\nBy combining dc-magnetization, nuclear magnetic resonance, and muon-spin rotation (\u00b5SR) measurements on high-quality V<sub>2</sub>Ga<sub>5</sub> single crystals, we investigate the electronic properties of its normal- and superconducting ground states. NMR measurements in the normal state indicate a strong anisotropy in both the line shifts and the relaxation rates. Such anisotropy persists also in the superconducting state, as shown by the magnetization and \u00b5SR-spectroscopy results. In the latter case, data collected at different temperatures, pressures, and directions of the magnetic field (with respect to the crystalline axes) evidence a fully-gapped, strongly anisotropic superconductivity. At the same time, hydrostatic pressure is shown to only lower the Tc value, but not to change the superfluid density nor its temperature dependence. Lastly, we discuss the search for topological signatures in the normal state of V<sub>2</sub>Ga<sub>5</sub>, as well as a peak splitting in the FFT of the \u00b5SR spectrum, possibly related to an unconventional vortex lattice. Our results suggest that V<sub>2</sub>Ga<sub>5</sub> is a novel system, whose anisotropy plays a key role in determining its unusual electronic properties.", 
    "mcid": "2025.43", 
    "status": "published", 
    "contributors": [
      {
        "affiliations": [
          "CNR-SPIN, I-16152 Genova, Italy"
        ], 
        "givennames": "Gianrico", 
        "familyname": "Lamura"
      }, 
      {
        "affiliations": [
          "Laboratorium f\u00fcr Festk\u00f6rperphysik, ETH Z\u00fcrich, CH-8093 Z\u00fcrich, Switzerland"
        ], 
        "givennames": "Daniel", 
        "familyname": "Tay"
      }, 
      {
        "affiliations": [
          "PSI Center for Neutron and Muon Sciences CNM, CH-5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Roustem", 
        "familyname": "Khassanov"
      }, 
      {
        "affiliations": [
          "CNR-SPIN, I-84084 Fisciano (Salerno), Italy"
        ], 
        "givennames": "Paola", 
        "familyname": "Gentile"
      }, 
      {
        "affiliations": [
          "School of Physical Science and Technology, Ningbo University, 315211 Ningbo, China"
        ], 
        "givennames": "Chunqiang", 
        "familyname": "Xu"
      }, 
      {
        "affiliations": [
          "Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-2320, USA"
        ], 
        "givennames": "Xianglin", 
        "familyname": "Ke"
      }, 
      {
        "affiliations": [
          "Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Universit\u00e0 di Parma, Parco Area delle Scienze 7/A, I-43124 Parma, Italy"
        ], 
        "givennames": "Ifeanyi John", 
        "familyname": "Onuorah"
      }, 
      {
        "email": "pietro.bonfa@unimore.it", 
        "affiliations": [
          "Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Universit\u00e0 di Modena e Reggio Emilia, via Campi 213/a, 41125 Modena, Italy", 
          "CNR \u2014 Istituto Nanoscienze, via Campi 213/a, 41125 Modena, Italy"
        ], 
        "givennames": "Pietro", 
        "familyname": "Bonf\u00e0"
      }, 
      {
        "email": "xuxiaofeng@zjut.edu.cn", 
        "affiliations": [
          "School of Physics, Zhejiang University of Technology, Hangzhou 310023, China"
        ], 
        "givennames": "Xiaofeng", 
        "familyname": "Xu"
      }, 
      {
        "email": "toni.shiroka@psi.ch", 
        "affiliations": [
          "Laboratorium f\u00fcr Festk\u00f6rperphysik, ETH Z\u00fcrich, CH-8093 Z\u00fcrich, Switzerland", 
          "PSI Center for Neutron and Muon Sciences CNM, CH-5232 Villigen PSI, Switzerland"
        ], 
        "givennames": "Toni", 
        "familyname": "Shiroka"
      }
    ], 
    "edited_by": 576, 
    "_files": [
      {
        "description": "Archive with computational results.", 
        "key": "archive.zip", 
        "checksum": "md5:fa9de31eb798b2da0d5ed839fea78f02", 
        "size": 107949036
      }
    ], 
    "owner": 80, 
    "conceptrecid": "2604", 
    "version": 1, 
    "_oai": {
      "id": "oai:materialscloud.org:2605"
    }, 
    "keywords": [
      "Superconductivity", 
      "Nuclear Magnetic Resonance", 
      "Muon Spin Rotation and Relaxation Spectroscopy"
    ], 
    "id": "2605", 
    "publication_date": "Mar 19, 2025, 16:17:44", 
    "title": "Anisotropic superconductivity in the quasi-one-dimensional superconductor"
  }
}