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

@article{Xu2017EnhancedEC,
  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},
  year={2017},
  volume={1},
  pages={064201}
}
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… 
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References

SHOWING 1-10 OF 41 REFERENCES
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.
TLDR
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
TLDR
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.
TLDR
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.
TLDR
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
TLDR
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.
...
1
2
3
4
5
...