Pressure induced superconducting dome in LaNiGa2

Abstract

LaNiGa2 is a time-reversal symmetry breaking superconductor with symmetry protected band crossings, making it an ideal platform for investigating the interplay between unconventional superconductivity and electronic structure topology. Here we present a transport study of LaNiGa2 under pressure. The application of pressure to LaNiGa2 induces a significant enhancement of the superconducting transition temperature Tc at a pressure of 7 GPa. In contrast, powder X-ray diffraction (XRD) results show no evidence of structural phase transitions up to 26.3 GPa. Moreover, the ratio of band diffusivity shows a sudden increase at around 7 GPa, suggesting possible pressure-induced changes in the electronic structure that are closely linked to the evolution of superconductivity.

References in corpus (41)

• Topological superconductors: a review
• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Observation of broken time-reversal symmetry in the heavy fermion superconductor UPt${}_3$
• Pressure-Induced Unconventional Superconducting Phase in the Topological Insulator Bi2Se3
• Observation of Time-Reversal Symmetry Breaking in the Non-Centrosymmetric Superconductor Re6Zr
• Split superconducting and time-reversal symmetry-breaking transitions, and magnetic order in Sr${}_2$RuO${}_4$ under uniaxial stress
• Polar Kerr Effect as Probe for Time-Reversal Symmetry Breaking in Unconventional Superconductors
• Non-unitary triplet pairing in the centrosymmetric superconductor LaNiGa${}_2$
• Pressure-induced monotonic enhancement of Tc to over 30 K in the superconducting Pr0.82Sr0.18NiO2 thin films
• Importance of Fermi surface topology for high temperature superconductivity in electron-doped iron arsenic superconductors
• Recent progress on superconductors with time-reversal symmetry breaking
• Intrinsic magnetism in superconducting infinite-layer nickelates
• Emerging superconductivity with broken time reversal symmetry inside a superconducting $s$-wave state
• Time-reversal symmetry breaking in Re-based superconductors
• Evidence for two-gap superconductivity in the non-centrosymmetric compound LaNiC${}_2$
• Observation of strong electron pairing on bands without Fermi surfaces in LiFe1-xCoxAs
• Emergent Kondo scaling in iron-based superconductors AFe2As2 (A = K, Rb, Cs)
• Relativistic analysis of the pairing symmetry of the noncentrosymmetric superconductor LaNiC${}_2$
• Simultaneous Nodal Superconductivity and Time-Reversal Symmetry Breaking in the Noncentrosymmetric Superconductor CaPtAs
• Two-gap superconductivity in LaNiGa${}_2$ with non-unitary triplet pairing and even parity gap symmetry
• Broken time-reversal symmetry probed by muon spin relaxation in the caged type superconductor Lu${}_5$Rh${}_6$Sn${}_{18}$
• NMR Evidence of Antiferromagnetic Spin Fluctuations in Nd${}_{0.85}$Sr${}_{0.15}$NiO${}_2$
• Universal behavior of the upper critical field in iron based superconductors
• Comparative study of the centrosymmetric and non-centrosymmetric superconducting phases of Re3W using muon-spin spectroscopy and heat capacity measurements
• Quantitative Theory of Triplet Pairing in the Unconventional Superconductor LaNiGa${}_2$
• The Superconductivity of Sr${}_2$RuO${}_4$ Under $c$-Axis Uniaxial Stress
• Pressure effects on the unconventional superconductivity of the noncentrosymmetric LaNiC2
• Chiral singlet superconductivity in the weakly correlated metal LaPt3P
• CaPtAs: a new noncentrosymmetric superconductor
• Spin-triplet superconductivity in Weyl nodal-line semimetals
• Dirac lines and loop at the Fermi level in the Time-Reversal Symmetry Breaking Superconductor LaNiGa${}_2$
• Fully-gapped superconductivity in single crystals of noncentrosymmetric Re${}_6$Zr with broken time-reversal symmetry
• Concise guide for electronic topological transitions
• Evidence for the coexistence of time-reversal symmetry breaking and Bardeen-Cooper-Schrieffer-like superconductivity in La${}_7$Pd${}_3$
• Electron irradiation reveals robust fully gapped superconductivity in LaNiGa${}_2$
• Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa${}_2$
• A Family of Lanthanide Noncentrosymmetric Superconductors La${}_4$$TX$ ($T$ = Ru, Rh, Ir; $X$ = Al, In)