The observation of in-plane quantum Griffiths singularity in two-dimensional crystalline superconductors
arXiv:2011.00268 · doi:10.1103/PhysRevLett.127.137001
Abstract
Quantum Griffiths singularity (QGS) reveals the profound influence of quenched disorder on the quantum phase transitions, characterized by the divergence of the dynamical critical exponent at the boundary of the vortex glass-like phase, named as quantum Griffiths phase. However, in the absence of vortices, whether the QGS can exist under parallel magnetic field remains a puzzle. Here we study the magnetic field induced superconductor-metal transition in ultrathin crystalline PdTe2 films grown by molecular beam epitaxy. Remarkably, the QGS emerges under both perpendicular and parallel magnetic field in 4-monolayer PdTe2 films. The direct activated scaling analysis with a new irrelevant correction has been proposed, providing important evidence of QGS. With increasing film thickness to 6 monolayers, the QGS disappears under perpendicular field but persists under parallel field, and this discordance may originate from the differences in microscopic processes. Our work demonstrates the universality of parallel field induced QGS and can stimulate further investigations on novel quantum phase transitions under parallel magnetic field.
References in corpus (20)
- Continuous Quantum Phase Transitions
- Highly crystalline 2D superconductors
- Metallic ground state in an ion-gated two-dimensional superconductor
- Corrections to scaling at the Anderson transition
- Ising Superconductivity and Quantum Phase Transition in Macro-Size Monolayer NbSe2
- Critical exponent for the quantum Hall transition
- Infinite-randomness critical point in the two-dimensional disordered contact process
- Renormalization group study of the two-dimensional random transverse-field Ising model
- Infinite-randomness quantum critical points induced by dissipation
- Type-II Ising superconductivity in two-dimensional materials with strong spin-orbit coupling
- Quantum phase transitions in highly crystalline two-dimensional superconductors
- Type-II Ising superconductivity and anomalous metallic state in macro-size ambient-stable ultrathin crystalline films
- Finite Size Effects and Irrelevant Corrections to Scaling near the Integer Quantum Hall Transition
- Numerical study of the localization length critical index in a network model of plateau-plateau transitions in the quantum Hall effect
- Observation of Quantum Griffiths Singularity and Ferromagnetism at Superconducting LaAlO3/SrTiO3(110) Interface
- Interface induced Zeeman-protected superconductivity in ultrathin crystalline lead films
- Dynamical conductivity at the dirty superconductor-metal quantum phase transition
- Infinite-randomness fixed point of the quantum superconductor-metal transitions in amorphous thin films
- Anomalous quantum Griffiths singularity in ultrathin crystalline lead films
- Theory of the pairbreaking superconductor-metal transition in nanowires
Cited by in corpus (11)
- Electrically controlled superconductor-insulator transition and giant anomalous Hall effect in kagome metal CsV3Sb5 nanoflakes
- Quantum phase transitions in two-dimensional superconductors: a review on recent experimental progress
- Quantum phase transition in two-dimensional NbN superconducting thin films
- Large scale behavior of the energy spectra of the quantum random antiferromagnetic Ising chain with mixed transverse and longitudinal fields
- Robust Quantum Griffiths Singularity at above 1.5 Kelvin in Nitride Thin Films
- Two-dimensional non-van der Waals niobium nitride nanosheets with high-temperature two-gap superconductivity
- The activated scaling behavior of quantum Griffiths singularity in two-dimensional superconductors
- Three-dimensional quantum Griffiths singularity in bulk iron-pnictide superconductors
- Quantum Griffiths singularity in a three-dimensional superconductor to Anderson critical insulator transition
- Quantum Griffiths singularity in three-dimensional MoTiN superconducting films
- Divergence of thermalization rates driven by the competition between finite temperature and quantum coherence