Enhanced electron correlations in the binary stannide PdSn4 : A homologue of the Dirac nodal arc semimetal PtSn4

  title={Enhanced electron correlations in the binary stannide PdSn4 : A homologue of the Dirac nodal arc semimetal PtSn4},
  author={C. Q. Xu and W. Zhou and Raman Sankar and Xiangzhuo Xing and Z. X. Shi and Z. D. Han and Bin Qian and Jing-han Wang and Zengwei Zhu and Jingjing Zhang and Alimamy F. Bangura and Nigel E. Hussey and Xiaofeng Xu},
  journal={Physical Review Materials},
The advent of nodal-line semi-metals, i.e. systems in which the conduction and valence bands cross each other along a closed trajectory (line or loop) inside the Brillouin zone, has opened up a new arena for the exploration of topological condensed matter in which, due to a vanishing density of states near the Fermi level, electron correlation effects may also play an important role. In spite of this conceptual richness however, material realization of nodal-line (loop) fermions is rare, with… 
17 Citations

Figures and Tables from this paper

Extremely large magnetoresistance and Kohler's rule in PdSn4 : A complete study of thermodynamic, transport, and band-structure properties
A new type of a topological quantum structure was identified recently in PtSn${}_{4}$ as a Dirac node arc feature on the surface. More importantly, PtSn${}_{4}$ shows extremely large
Electronic Structure and Electronic Properties of PtSn4 Single Crystal
A topological semimetal PtSn4 single crystal is grown and the following properties are studied: its electrical resistivity in the temperature range from 4.2 to 300 K, galvanomagnetic properties at
Kondo behavior and metamagnetic phase transition in the heavy-fermion compound CeBi2
Heavy fermions represent an archetypal example of strongly correlated electron systems which, due to entanglement among different interactions, often exhibit exotic and fascinating physics involving
Two-dimensional superconductivity and magnetotransport from topological surface states in AuSn4 semimetal
Topological materials such as Dirac or Weyl semimetals are new states of matter characterized by symmetry-protected surface states responsible for exotic low-temperature magnetotransport properties.
Two-gap superconductivity and topological surface states in TaOsSi
The occurrence of superconductivity in topological materials is considered as a promising route for realizing topological superconductors, a platform able to host the long-sought Majorana fermions in
Evidence of s-wave superconductivity in the noncentrosymmetric La7Ir3
It is found that La7Ir3 displays a moderately large electronic heat capacity and a significantly enhanced Kadowaki-Woods ratio that is greater than the typical value for strongly correlated electron systems, placing severe constraints on any theory of exotic superconductivity in this system.
Topological Type-II Dirac Fermions Approaching the Fermi Level in a Transition Metal Dichalcogenide NiTe2
Type-II Dirac/Weyl semimetals are characterized by strongly tilted Dirac cones such that the Dirac/Weyl node emerges at the boundary of electron and hole pockets as a new state of quantum matter,
Quantum oscillations and anomalous angle-dependent magnetoresistance in the topological candidate Ag3Sn
Because of their unique electronic structure and peculiar physical properties, topological materials have attracted considerable attention in condensed matter physics. In both physics and material
Normal-state negative longitudinal magnetoresistance and Dirac-cone-like dispersion in PtPb4 single crystals: a potential Weyl-semimetal superconductor candidate
Magnetotransport measurements of PtPb4 single crystals with the T c of ∼2.80 K reveal pronounced exotic topological nature. An anomalous negative longitudinal magnetoresistance (MR) related to the
Layer-locked spin states revealed in the centrosymmetric nodal-line semimetal HfSiS
  • H. J. Qian, X. Zhang, +8 authors S. Qiao
  • Physics
    Physical Review B
  • 2021
The spin-polarized bulk states in the centrosymmetric nodal-line semimetal HfSiS were observed by spin- and angle-resolved photoelectron spectroscopy. Combining with density functional theory


Unconventional mass enhancement around the Dirac nodal loop in ZrSiS
The topological properties of fermions arise from their low-energy Dirac-like band dispersion and associated chirality. Initially confined to points, extensions of the Dirac dispersion to lines, and
Evidence of Topological Nodal-Line Fermions in ZrSiSe and ZrSiTe.
ZrSiSe and ZrSiTe single crystals can be thinned down to 2D atomic thin layers through microexfoliation, which offers the first platform to explore exotic properties of topological nodal-line fermions in low dimensions.
Long-range Coulomb interaction in nodal-ring semimetals
Recently there have been several proposals of materials predicted to be nodal-ring semimetals, where zero energy excitations are characterized by a nodal ring in the momentum space. This class of
Topological nodal line semimetals
We review the recent, mainly theoretical, progress in the study of topological nodal line semimetals in three dimensions. In these semimetals, the conduction and the valence bands cross each other
Dirac cone protected by non-symmorphic symmetry and three-dimensional Dirac line node in ZrSiS
This work shows that the highly stable, non-toxic and earth-abundant material, ZrSiS, has an electronic band structure that hosts several Dirac cones that form a Fermi surface with a diamond-shaped line of Dirac nodes, making it a very promising candidate to study Dirac electrons, as well as the properties of lines ofDirac nodes.
Quantum oscillations of the metallic triangular-lattice antiferromagnet PdCrO2.
The reported electronic and transport properties of the triangular antiferromagnet PdCrO(2) at high magnetic fields up to 33 T are reported, using measurements of the de Haas-van Alphen oscillations and the Hall resistivity and suggest significant coupling of the itinerant electrons to the underlying spin texture.
Interacting line-node semimetal and spontaneous symmetry breaking
strong onsite ( U) and nearest- neighbor (V ) repulsions, respectively. While onset of these two orderings from the semimetallic phase takes place through continuous quantum phase transitions, a rst
Correlation and transport phenomena in topological nodal-loop semimetals
We study the unique physical properties of topological nodal-loop semimetals protected by the coexistence of time-reversal and inversion symmetries with negligible spin-orbit coupling. We argue that
Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd3As2.
This work reports a property of Cd3As2 that was unpredicted, namely a remarkable protection mechanism that strongly suppresses backscattering in zero magnetic field and discusses how this may relate to changes to the Fermi surface induced by the applied magnetic field.
Topological nodal-line fermions in spin-orbit metal PbTaSe2
The detailed angle-resolved photoemission measurements, first-principles simulations and theoretical topological analysis illustrate the physical mechanism underlying the formation of the topological nodal-line states and associated surface states for the first time, thus paving the way towards exploring the exotic properties of the bottom-line fermions in condensed matter systems.