Quantum oscillations and transport properties of layered single-crystal SrCu${}_4$As${}_2$

Abstract

We report a systematic investigation of the physical properties and Fermi-surface topology of layered single-crystal \ce{SrCu4As2} using electrical transport, magnetotransport, and quantum-oscillation experiments plus band-structure calculations. The temperature-dependent electrical resistivity reveals a hysteretic phase transition at $T_P$ = 59 K, most likely associated with a structural change. Hall resistivity data suggest a marked change in the average hole density resulting from the latter phase transition near $T_P$. A large, linear, and nonsaturating magnetoresistance is observed at low temperatures in \ce{SrCu4As2}, likely attributable to the multipocket Fermi surface. Quantum-oscillation data measured in magnetic fields of up to 60 T show several oscillation frequencies exhibiting low effective masses, indicating the presence of Dirac-like band dispersion in \ce{SrCu4As2}, as suggested by the band structure calculations.

arXiv comment8 Pages, 4 figures

References in corpus (25)

• Titanic Magnetoresistance in WTe2
• Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd${}_3$As${}_2$
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Non-saturating magnetoresistance in heavily disordered semiconductors
• Topological nodal-line fermions in ZrSiSe and ZrSiTe
• FermiSurfer: Fermi-surface viewer providing multiple representation schemes
• Linear magnetoresistance caused by mobility fluctuations in the n-doped Cd3As2
• Electronic Transport and quantum oscillation of Topological Semimetals
• Numerical extraction of de Haas - van Alphen frequencies from calculated band energies
• Large linear magnetoresistance in the Dirac semimetal TlBiSSe
• Compensated semimetal LaSb with unsaturated magnetoresistance
• Electron and hole Dirac cone states in-pairs in Ba(FeAs)${}_2$ confirmed by magnetoresistance
• Large Magnetoresistance in Compensated Semimetals TaAs${}_2$ and NbAs${}_2$
• Large Linear Magnetoresistance and Shubnikov-de Hass Oscillations in Single Crystals of YPdBi Heusler Topological Insulators
• Observation of Dirac-like band dispersion in LaAgSb${}_2$
• Topologically-Driven Linear Magnetoresistance in Helimagnetic FeP
• NbIr${}_2$B${}_2$ and TaIr${}_2$B${}_2$ -- new low symmetry noncentrosymmetric superconductors with strong spin orbit coupling
• Structural distortion and incommensurate noncollinear magnetism in EuAg4As2
• Significant change in the electronic behavior associated with structural distortions in the single crystalline SrAg4As2
• Metamagnetic transitions and anomalous magnetoresistance in EuAg${}_4$As${}_2$ single crystal
• Large magnetoresistance and first-order phase transition in antiferromagnetic single-crystalline EuAg${}_4$Sb${}_2$
• Unusual phase boundary of the magnetic-field-tuned valence transition in CeOs${}_4$Sb${}_{12}$
• Coexistence of Dirac fermion and charge density wave in square-net-based semimetal LaAuSb2
• Observation of quantum oscillations, linear magnetoresistance, and crystalline electric field effect in quasi-two-dimensional PrAgBi${}_2$
• Fragile superconductivity in a Dirac metal