scholarly journals Recognition of Fermi-arc states through the magnetoresistance quantum oscillations in Dirac semimetal Cd3As2 nanoplates

2017 ◽  
Vol 96 (12) ◽  
Author(s):  
Guolin Zheng ◽  
Min Wu ◽  
Hongwei Zhang ◽  
Weiwei Chu ◽  
Wenshuai Gao ◽  
...  
Keyword(s):  
Quantum Oscillations ◽  
Fermi Arc ◽  
Dirac Semimetal

Realizing topological states in type-II Dirac semimetal PdTe2: an angle-resolved photoemission and quantum oscillations study

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Jadupati Nag ◽  
Anshu Kataria ◽  
Ravi Prakash Singh ◽  
Soma Banik ◽  
Aftab Alam ◽  
...  
Keyword(s):  
Type Ii ◽  
Quantum Oscillations ◽  
Dirac Semimetal ◽  
Topological States

scholarly journals Fermi-arc supercurrent oscillations in Dirac semimetal Josephson junctions

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Cai-Zhen Li ◽  
An-Qi Wang ◽  
Chuan Li ◽  
Wen-Zhuang Zheng ◽  
Alexander Brinkman ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Fermi Arc ◽  
Dirac Semimetal

scholarly journals Evidence for strong electron correlations in a nonsymmorphic Dirac semimetal

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Yu-Te Hsu ◽  
Danil Prishchenko ◽  
Maarten Berben ◽  
Matija Čulo ◽  
Steffen Wiedmann ◽  
...  
Keyword(s):  
Electronic Excitations ◽  
Electron Correlations ◽  
Strong Electron ◽  
Brillouin Zone Boundary ◽  
Quantum Oscillations ◽  
Strong Electron Correlations ◽  
Dirac Semimetal ◽  
Linear Band ◽  
Iridium Oxides ◽  
New Phenomena

AbstractMetallic iridium oxides (iridates) provide a fertile playground to explore new phenomena resulting from the interplay between topological protection, spin-orbit and electron-electron interactions. To date, however, few studies of the low energy electronic excitations exist due to the difficulty in synthesising crystals with sufficiently large carrier mean-free-paths. Here, we report the observation of Shubnikov-de Haas quantum oscillations in high-quality single crystals of monoclinic SrIrO3 in magnetic fields up to 35 T. Analysis of the oscillations reveals a Fermi surface comprising multiple small pockets with effective masses up to 4.5 times larger than the calculated band mass. Ab-initio calculations reveal robust linear band-crossings at the Brillouin zone boundary, due to its non-symmorphic symmetry, and overall we find good agreement between the angular dependence of the oscillations and the theoretical expectations. Further evidence of strong electron correlations is realized through the observation of signatures of non-Fermi liquid transport as well as a large Kadowaki-Woods ratio. These collective findings, coupled with knowledge of the evolution of the electronic state across the Ruddlesden-Popper iridate series, establishes monoclinic SrIrO3 as a topological semimetal on the boundary of the Mott metal-insulator transition.

scholarly journals Influence of Fermi arc states and double Weyl node on tunneling in a Dirac semimetal

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Zhuo Bin Siu ◽  
Can Yesilyurt ◽  
Mansoor B. A. Jalil ◽  
Seng Ghee Tan
Keyword(s):  
Fermi Arc ◽  
Dirac Semimetal

scholarly journals Transport evidence for Fermi-arc-mediated chirality transfer in the Dirac semimetal Cd3As2

Nature ◽  
2016 ◽  
Vol 535 (7611) ◽  
pp. 266-270 ◽  
Author(s):  
Philip J. W. Moll ◽  
Nityan L. Nair ◽  
Toni Helm ◽  
Andrew C. Potter ◽  
Itamar Kimchi ◽  
...  
Keyword(s):  
Chirality Transfer ◽  
Fermi Arc ◽  
Dirac Semimetal

scholarly journals Vanishing quantum oscillations in Dirac semimetal ZrTe5

2018 ◽  
Vol 115 (37) ◽  
pp. 9145-9150 ◽  
Author(s):  
Jingyue Wang ◽  
Jingjing Niu ◽  
Baoming Yan ◽  
Xinqi Li ◽  
Ran Bi ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Berry Phase ◽  
Zeeman Splitting ◽  
Arbitrary Field ◽  
Quantum Oscillations ◽  
Topological Materials ◽  
Dirac Semimetal ◽  
Zero Effect ◽  
The Magnetic Field

One of the characteristics of topological materials is their nontrivial Berry phase. Experimental determination of this phase largely relies on a phase analysis of quantum oscillations. We study the angular dependence of the oscillations in a Dirac material ZrTe5 and observe a striking spin-zero effect (i.e., vanishing oscillations accompanied with a phase inversion). This indicates that the Berry phase in ZrTe5 remains nontrivial for arbitrary field direction, in contrast with previous reports. The Zeeman splitting is found to be proportional to the magnetic field based on the condition for the spin-zero effect in a Dirac band. Moreover, it is suggested that the Dirac band in ZrTe5 is likely transformed into a line node other than Weyl points for the field directions at which the spin zero occurs. The results underline a largely overlooked spin factor when determining the Berry phase from quantum oscillations.

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