Optical conductivity of the type-II Weyl semimetal TaIrTe4

  title={Optical conductivity of the type-II Weyl semimetal 
  author={F. Le Mardel{\'e} and David Santos-Cottin and Edoardo Martino and Konstantin Semeniuk and S. Ben David and Filip Orbani{\'c} and Mario Novak and Zoran Rukelj and Christopher C. Homes and Ana Akrap},
  journal={Physical Review B},
TaIrTe4 is an example of a candidate Weyl type-II semimetal with a minimal possible number of Weyl nodes. Four nodes are reported to exist in a singl 

Figures from this paper

Optical conductivity of the type-II Weyl semimetal WTe2 under pressure
Tungsten ditelluride WTe$_2$ is a type-II Weyl semimetal with electronic properties highly sensitive to external pressure, as demonstrated by the superconductivity emerging under pressure. Here, we
A Raman probe of phonons and electron–phonon interactions in the Weyl semimetal NbIrTe4
It is shown using polarized angular-resolved micro-Raman scattering at two excitation energies that it is possible to extract the phonon mode dependence of the Raman tensor elements from the shape of the scattering efficiency versus angle.
Dynamical evolution of anisotropic response of type-II Weyl semimetal TaIrTe4 under ultrafast photoexcitation
The angle-resolved measurement of transient reflection reveals that the reflectivity becomes less anisotropic in the quasi-equilibrium state, indicating a reduction in the anisotropy of dynamical conductivity in presence of photoexcited hot carriers.
Tunable photonic spin Hall effect due to the chiral Hall effect in strained Weyl semimetals
The latest research suggests that strain can be utilized to engineer the electronic states of Weyl semimetals (WSMs) through creating a pseudo-magnetic field B el. The response of strained WSMs to a


TaIrTe4: A ternary type-II Weyl semimetal
In metallic condensed matter systems two different types of Weyl fermions can in principle emerge, with either a vanishing (type-I) or with a finite (type-II) density of states at the Weyl node
Low-energy excitations in type-II Weyl semimetal Td−MoTe2 evidenced through optical conductivity
Molybdenum ditelluride, MoTe2, is a versatile material where the topological phase can be readily tuned by manipulating the associated structural phase transition. The fine details of the band
Optical spectroscopy of the Weyl semimetal TaAs
Here, we present a systematic study of both the temperature and frequency dependence of the optical response in TaAs, a material that has recently been realized to host the Weyl semimetal state. Our
Coexistence of tunable Weyl points and topological nodal lines in ternary transition-metal telluride TaIrTe4
We report a combined theoretical and experimental study on TaIrTe4, a potential candidate of the minimal model of type-II Weyl semimetals. Unexpectedly, an intriguing node structure with twelve Weyl
Optical properties of the perfectly compensated semimetal WTe 2
The optical properties of layered tungsten ditelluride have been measured over a wide temperature and frequency range for light polarized in the a-b planes. A striking low-frequency plasma edge
Nonlinear photoresponse of type-II Weyl semimetals
Signs of the singular topology of the type-II Weyl semimetal TaIrTe4 are revealed in the photoresponses, which are related to divergence of the Berry curvature, which may open the door for studying and controlling the chiral polarization of Weyl fermions with an electric field in addition to the optical helicities.
Bipolar Conduction is the Origin of the Electronic Transition in Pentatellurides: Metallic vs. Semiconducting Behavior
The pentatellurides, ZrTe5 and HfTe5 are layered compounds with one dimensional transition-metal chains that show a never understood temperature dependent transition in transport properties as well
Surface superconductivity in the type II Weyl semimetal TaIrTe4
The discovery of the surface superconductivity in TaIrTe4 provides a new novel platform to explore topologicalsuperconductivity and Majorana modes.
Signatures of a time-reversal symmetric Weyl semimetal with only four Weyl points
The authors show that TaIrTe4 has only four Weyl points, the minimal number required by time-reversal symmetry, a simpler platform for accessing exotic transport phenomena arising in Weyl semimetals.
Two-Dimensional Conical Dispersion in ZrTe_{5} Evidenced by Optical Spectroscopy.
A combined optical and transport study of ZrTe_{5}, which reveals an alternative view of electronic bands in this material, concludes that the dispersion is approximately linear only in the a-c plane, while remaining relatively flat and parabolic in the third direction.