Quantum Phases and Spin Liquid Properties of 1T-TaS2
arXiv:2007.15905 · doi:10.1038/s41535-021-00367-w
Abstract
Quantum materials exhibiting magnetic frustration are connected to diverse phenomena including high-Tc superconductivity, topological order and quantum spin liquids (QSLs). A QSL is a quantum phase (QP) related to a quantum-entangled fluid-like state of matter. Previous experiments on QSL candidate materials are usually interpreted in terms of a single QP, although theories indicate that many distinct QPs are closely competing in typical frustrated spin models. Here we report on combined temperature-dependent muon spin relaxation and specific heat measurements for the triangular-lattice QSL candidate material 1T-TaS2 that provide evidence for competing QPs. The measured properties are assigned to arrays of individual QSL layers within the layered charge density wave structure of 1T-TaS2 and their characteristic parameters can be interpreted as those of distinct Z2 QSL phases. The present results reveal that a QSL description can extend beyond the lowest temperatures, offering a new perspective in the search for novel quantum materials.
arXiv commentMain Text + Supplementary Information
References in corpus (38)
- Quantum Spin Liquids
- Quantum Spin Liquid States
- Spin Liquid State in an Organic Mott Insulator with Triangular Lattice
- Quantum Orders and Symmetric Spin Liquids
- Quantum phase transitions
- Weak magnetism and non-Fermi liquids near heavy-fermion critical points
- Variational study of triangular lattice spin-1/2 model with ring exchanges and spin liquid state in κ-(ET)_2 Cu_2 (CN)_3
- Evidence for a spinon Fermi surface in a triangular lattice quantum spin liquid candidate
- Is 1T-TaS a 40 year old quantum spin liquid?
- Visualizing Exotic Orbital Texture in the Single-Layer Mott Insulator 1T-TaSe2
- SR evidence for the U(1) quantum spin liquid ground state in the triangular antiferromagnet YbMgGaO
- Band insulator to Mott insulator transition in 1T-TaS
- A new high-temperature quantum spin liquid with polaron spins
- Three Dimensional Metallic and Two Dimensional Insulating Behavior in Tantalum Dichalcogenides
- Mottness versus unit-cell doubling as the driver of the insulating state in 1T-TaS2
- Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application to
- Disrupted orbital order and the pseudo-gap in layered 1T-TaS
- Quantum Phase Transition in Frustrated Two-Dimensional Antiferromagnets
- Precision calculation of critical exponents in the universality classes with the nonperturbative renormalization group
- Spinon Fermi surface in a cluster Mott insulator model on a triangular lattice and possible application to 1T-TaS
- Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2
- Global phase diagrams of frustrated quantum antiferromagnets in two dimensions: doubled Chern-Simons theory
- Weak Mott insulators on the triangular lattice: possibility of a gapless nematic quantum spin liquid
- Gapless excitations in the ground state of 1T-TaS
- Theory of a competitive spin liquid state for weak Mott insulators on the triangular lattice
- The low-temperature highly correlated quantum phase in the charge-density-wave 1T-TaS_2 compound
- Pressure-Tuned Exchange Coupling of a Quantum Spin Liquid in the Molecular Triangular Lattice -(ET)Ag(CN)
- Dynamics and transport of the Z_2 spin liquid: application to kappa-(ET)2Cu2(CN)3
- Transport Properties of a spinon Fermi surface coupled to a U(1) gauge field
- Emergent Honeycomb Network of Topological Excitations in Correlated Charge Density Wave
- Statistics of fractionalized excitations through threshold spectroscopy
- Symmetric spin liquids and their neighboring phases on triangular lattice
- Spin-triplet pairing instability of the spinon Fermi surface in a U(1) spin liquid
- Preferential out-of-plane conduction and quasi-one-dimensional electronic states in layered 1T-TaS2
- Out-of-plane transport of 1T-TaS2/graphene-based van der Waals heterostructures
- Theoretical description of time-resolved pump/probe photoemission in TaS\_2: a single-band DFT+DMFT(NRG) study within the quasiequilibrium approximation
- van der Waals heterostructures based on atomically-thin superconductors
- Quantum Orders and Spin Liquids in CsCuCl