Pressure-induced concomitant topological and metal-insulator quantum phase transitions in CePdBi
arXiv:2202.03292 · doi:10.1038/s41535-022-00427-9
Abstract
The electronic property and magnetic susceptibility of CePdBi were systemically investigated from 18 K to 290 K for varying values of cell-volume using dynamic mean-field theory coupled with density functional theory. By extrapolating to zero temperature, the ground state of CePdBi at ambient pressure is found to be a correlated semimetal due to insufficient hybridization. Upon applying pressure, the hybridization strength increases and a crossover to Kondo insulator is observed at finite temperatures. The characteristic temperature signaling the formation of Kondo singlet, as well as the characteristic temperature associated with -electron delocalization-localization change, simultaneously vanishes around a critical volume of 0.992, suggesting that such metal-insulator transition is possibly associated with a quantum critical point. Finally, the Wilson's loop calculations indicate that the Kondo insulating side is topologically trivial, thus a topological transition also occurs across the quantum critical point.
References in corpus (21)
- Electronic Structure Calculations with Dynamical Mean-Field Theory: A Spectral Density Functional Approach
- Fermi-liquid instabilities at magnetic quantum phase transitions
- Quantum Criticality in Heavy Fermion Metals
- An equivalent expression of Z2 Topological Invariant for band insulators using Non-Abelian Berry's connection
- Topological Kondo Insulators
- Quantum Monte Carlo Impurity Solver for Cluster DMFT and Electronic Structure Calculations in Adjustable Base
- Quantum magnetism and criticality
- Cubic Topological Kondo Insulators
- Weyl-Kondo Semimetal in Heavy Fermion Systems
- Giant spontaneous Hall effect in a nonmagnetic Weyl-Kondo semimetal
- Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling
- Topological Hamiltonian as an Exact Tool for Topological Invariants
- Möbius Kondo Insulators
- Emergent non-Fermi liquid at the quantum critical point of a topological phase transition in two dimensions
- WannSymm: A symmetry analysis code for Wannier orbitals
- transition in cerium: magnetic form factor and dynamic magnetic susceptibility in dynamical mean-field theory
- From Trivial Kondo Insulator CePtBi to Topological Nodal-line Semimetal CePdBi
- Magnetic field-tuned quantum criticality in a Kondo insulator
- Topological quantum critical point in a triple-Weyl semimetal: non-Fermi-liquid behaviors and instabilities
- Resistivity saturation in Kondo insulators
- Isoelectronic tuning of heavy fermion systems: Proposal to synthesize Ce3Sb4Pd3