Quantum mechanics

Electrical resistivity and conductivity

Fermi level

Magnetic field

Magnetization

Materials science

Effective mass (spring–mass system)

Acoustics

Lattice (music)

Physics

Fermi energy

Charge carrier

Superconductivity

Condensed matter physics

Charge (physics)

Electron

Hall effect

Chinese Physics Letters

We report the discovery of superconductivity and detailed normal-state physical properties of RbV3Sb5 single crystals with V kagome lattice. RbV3Sb5 single crystals show a superconducting transition at Tc ~ 0.92 K. Meanwhile, resistivity, magnetization and heat capacity measurements indicate that it exhibits anomalies of properties at T* ~ 102 - 103 K, possibly related to the formation of charge ordering state. When T is lower than T*, the Hall coefficient RH undergoes a drastic change and sign reversal from negative to positive, which can be partially explained by the enhanced mobility of hole-type carriers. In addition, the results of quantum oscillations show that there are some very small Fermi surfaces with low effective mass, consistent with the existence of multiple highly dispersive Dirac band near the Fermi energy level.

Superconductivity and Normal-State Properties of Kagome Metal RbV<sub>3</sub>Sb<sub>5</sub> Single Crystals

Superconductivity and Normal-State Properties of Kagome Metal RbV3Sb5 Single Crystals

Superconductivity and Normal-State Properties of Kagome Metal RbV₃Sb₅ Single Crystals