Real spin and pseudospin topologies in the noncentrosymmetric topological nodal-line semimetal CaAgAs
arXiv:2002.05597 · doi:10.1103/PhysRevB.101.245104
Abstract
We present the topology of spin-split Fermi surface of CaAgAs as determined by de Haas-van Alphen (dHvA) effect measurements combined with ab initio calculations. We have determined the torus-shaped nodal-line Fermi surface from the dHvA oscillations of and orbits. The former orbit encircles the nodal-line, while the latter does not. Nevertheless, a nontrivial Berry phase is found for both orbits. The nontrivial phase of arises from the orbital characters, which can be expressed as a pseudospin rotating around the nodal-line. On the other hand, the phase of is attributed to the vortex of real spin texture induced by an antisymmetric spin-orbit interaction. Our result demonstrates that both the real- and pseudo-spin textures are indispensable in interpreting the electronic topology in noncentrosymmetric nodal-line semimetals.
arXiv comment11 pages, 7 figures
References in corpus (50)
- Quantum Spin Hall Effect in Graphene
- Advanced capabilities for materials modelling with Quantum ESPRESSO
- Optimized norm-conserving Vanderbilt pseudopotentials
- Wannier90 as a community code: new features and applications
- Topological nodal semimetals
- Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
- Optimization Algorithm for the Generation of ONCV Pseudopotentials
- Dirac Line Nodes in Inversion Symmetric Crystals
- Topological Nodal Line Semimetal and Dirac Semimetal State in Antiperovskite CuPdN
- Dirac Cone Protected by Non-Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS
- Topological Node-Line Semimetal in Three Dimensional Graphene Networks
- Topological nodal line semimetals
- High-temperature surface superconductivity in topological flat-band systems
- Topological nodal-line fermions in ZrSiSe and ZrSiTe
- Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
- Drumhead Surface States and Topological Nodal-Line Fermions in TlTaSe2
- Potential ring of Dirac nodes in a new polymorph of CaP
- Line of Dirac Nodes in Hyper-Honeycomb Lattices
- Node-Surface and Node-Line Fermions From Nonsymmorphic Lattice Symmetries
- Discovery of Dirac Node Arcs in PtSn4
- Line-Node Dirac Semimetal and Topological Insulating Phase in Noncentrosymmetric Pnictides CaAgX (X = P, As)
- Numerical extraction of de Haas - van Alphen frequencies from calculated band energies
- Towards resolution of the Fermi surface in underdoped high-Tc superconductors
- Unexpected Dirac-Node Arc in the Topological Line-Node Semimetal HfSiS
- Spin Hall effect and Berry phase in two dimensional electron gas
- Landau Level Quantization and Almost Flat Modes in Three-dimensional Semi-metals with Nodal Ring Spectra
- Dirac Line-nodes and Effect of Spin-orbit Coupling in Non-symmorphic Critical Semimetal MSiS (M=Hf, Zr)
- Long-range Coulomb interaction in nodal-ring semimetals
- Coexistence of four-band nodal rings and triply-degenerate nodal points in centrosymmetric metal diborides
- Topological nodal line states and a potential catalyst of hydrogen evolution in the TiSi family
- Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs
- Rules for Phase Shifts of Quantum Oscillations in Topological Nodal-line Semimetals
- Topological transport in Dirac nodal-line semimetals
- Correlation and transport phenomena in topological nodal-loop semimetals
- Topological surface electronic states in candidate nodal-line semimetal CaAgAs
- Kondo effect in three-dimensional Dirac and Weyl systems
- Magneto-transport properties of the "hydrogen atom" nodal-line semimetal candidates CaTX (T=Ag, Cd, X=As, Ge)
- Topo-fermiology
- Pseudospin Vortex Ring with a Nodal Line in Three Dimensions
- Quasi-Topological Electromagnetic Response of Line-node Semimetals
- Transport and optics at the node in a nodal loop semimetal
- Optical conductivity of three and two dimensional topological nodal line semimetals
- Low Carrier Density Metal Realized in Candidate Line-Node Dirac Semimetals CaAgP and CaAgAs
- Electron transport in nodal-line semimetals
- Topological Nodal Line Electrides: Realization of Ideal Nodal Line State Nearly Immune from Spin-Orbit Coupling
- Trivial topological phase of CaAgP and the topological nodal-line transition in CaAg(P1-xAsx)
- Topological and trivial magnetic oscillations in nodal loop semimetals
- Quantum oscillations probe the Fermi surface topology of the nodal-line semimetal CaAgAs
- Fermi surface with Dirac fermions in CaFeAsF determined via quantum oscillation measurements
- Electronic properties of topological insulator candidate CaAgAs