Suppression of Superconductivity in Heavy-ion Irradiated 2H-NbSe2 Caused by Negative Pressure

Abstract

Effects of columnar defects created by 320 MeV Au irradiation on 2H-NbSe2 single crystals with a dose equivalent matching field up to 16 T were studied. Critical temperature is found to be suppressed almost linearly at a rate of 0.07 K/T. At the same time, the lattice parameters a and c are found to be expanded at rates of 0.016%/T and 0.030%/T, respectively. Such a lattice expansion should work as negative pressure to affect Tc. By separating the effect of heavy-ion irradiation on Tc suppression through lattice expansion and disorder, it is found that Tc is suppressed more by lattice expansion rather than by disorder.

References in corpus (13)

• Pressure evolution of low-temperature crystal structure and bonding of 37 K $T_c$ FeSe superconductor
• Unusual competition of superconductivity and charge-density-wave state in a compressed topological kagome metal
• Heat Conduction in the Vortex State of NbSe_2: Evidence for Multi-Band Superconductivity
• Pressure-induced Superconductivity in the Iron-based Ladder Material BaFe2S3
• Enhancement of Critical Current Densities in Co-Doped BaFe${}_2$As${}_2$ with Columnar Defects Introduced by Heavy-Ion Irradiation
• Change of pairing symmetry in the iron-based superconductor KFe2As2
• Using controlled disorder to probe the interplay between charge order and superconductivity in NbSe2
• Magneto-optical study of Ba(Fe${}_{1-x}$T${}_x$)${}_2$As${}_2$ (T=Co, Ni) single crystals irradiated with heavy-ions
• Gap structure of FeSe determined by field-angle-resolved specific heat measurements
• Hydrostatic and uniaxial pressure tuning of iron-based superconductors: Insights into superconductivity, magnetism, nematicity and collapsed tetragonal transitions
• Columnar defects acting as passive internal field detectors
• Charge density wave and superconductivity competition in Lu${}_5$Ir${}_4$Si${}_{10}$ : a proton irradiation study
• Glassy Dynamics in a heavy ion irradiated NbSe2 crystal

Cited by in corpus (5)

• Strong-coupling superconductivity and weak vortex pinning in Ta-doped CsV${}_3$Sb${}_5$ single crystals
• Effects of 3 MeV Proton Irradiation on Superconductivity and CDW in 2H-NbSe2 Single Crystals
• Peak Effects Induced by Particle Irradiations in 2H-NbSe2
• $H$-linear magnetoresistance in NbSe${}_2$ due to impeded cyclotron motion
• Enhancement of $J$${}_c$ by Proton Irradiation in HgBa${}_2$Ca${}_2$Cu${}_3$O${}_8$${}_{+}$${}_{\delta }$ Single Crystals