Topological Lifshitz transition of the intersurface Fermi-arc loop in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>NbIrTe</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>

Ekahana, Sandy Adhitia; Li, Y. W.; Sun, Yan; Namiki, Hiromasa; Yang, Haifeng; Jiang, Juan; Yang, Lexian; Shi, Wujun; Zhang, C. F.; Pei, Ding; Chen, C.; Sasagawa, T.; Felser, Claudia; Yan, Binghai; Liu, Z. K.; Chen, Y. L.

doi:10.1103/physrevb.102.085126

Cited by 23 publications

(16 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been revealed that the dispersion of surface state in electronic systems is sensitive to the surface decoration, even leading to Lifshitz transition of surface states in some topological semimetals 29 , 30 . Here, the dispersion of the photonic DSS can also be tuned significantly by a simple surface characteristic, as depicted in Fig.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Flatness and boundness of photonic drumhead surface state in a metallic lattice

Wang

Zhou

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Nodal chain (NC) semi-metals have the degeneracy of interlacing rings in their band structure in momentum space. With the projection of degenerate rings towards crystal boundaries, there is a special type of surface dispersion appearing at surface Brillouin zone and termed drumhead surface state (DSS). Previously, experimental investigations on photonic NC and DSS have been done on metallic photonic crystals at microwave frequencies. However, far-field detection of DSS and its coupling to radiative modes in free space have not been studied. In the work, we analyze the photonic DSS in a metallic lattice by angle-resolved far-field reflection measurement and numerical simulation at terahertz (THz) frequencies, and reveal its flatness and boundness in band structure, even in the radiation continuum. Particularly, the DSS band can be tuned being from negatively dispersive via flat to positively dispersive by a single surface parameter, and the DSS at Γ point in surface Brillouin zone is in fact a symmetry-protected bound state in the continuum. Our results might have some potential applications towards THz photonics.

show abstract

Section: Analysis and Discussionmentioning

confidence: 99%

Flatness and boundness of photonic drumhead surface state in a metallic lattice

Wang

Zhou

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…For example, the length of the electrodes along the smooth boundary can reach 4 μm [66], whereas the Fermi wavelength of the WSM in our system is boundaries are smooth enough, then the transverse momentum k z is approximately conserved during scattering. The WSM with a pair of FAs is a crucial building block in our proposal, which has been reported in NbIrTe 4 [49,[61][62][63], WP 2 [71], MoTe 2 [72], and YbMnBi 2 [73]. The main reason for the choice of the current time-reversal (T )-symmetric model is that it is the minimal model which contains a pair of FAs.…”

Section: Discussion and Summarymentioning

confidence: 99%

“…3(a). To simulate the FAs in real materials [49,[61][62][63], we have introduced an on-site potential V on the top layer of the WSM lattice to introduce surface dispersion that yields curved FAs [51,52].…”

Section: B Numerical Simulationmentioning

confidence: 99%

“…There are also theoretical studies of the FA and its transport properties [40][41][42][43][44], like quasiparticle interference (QPI) [45,46]. Recent progress has also shown that the configurations of the FAs are sensitive to the details of the sample boundary [47][48][49], thus opening the possibility for engineering FAs and exploring their novel effects and potential applications through surface device fabrication and transport measurements. In contrast to the photoemission spectroscopy experiments, the surface transport measurement has the advantage of extracting useful information of the spatial distribution of the surface states [50][51][52].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Conductance oscillation in surface junctions of Weyl semimetals

Chen

Zheng

et al. 2021

Phys. Rev. B

View full text Add to dashboard Cite

Fermi arc surface states, the manifestation of the bulk-edge correspondence in Weyl semimetals, have attracted much research interest. In contrast to the conventional Fermi loop, the disconnected Fermi arcs provide an exotic two-dimensional (2D) system for exploration of novel physical effects on the surface of Weyl semimetals. Here, we propose that visible conductance oscillation can be achieved in planar junctions fabricated on the surface of a Weyl semimetal with a pair of Fermi arcs. It is shown that Fabry-Pérot-type interference inside the 2D junction can generate conductance oscillation with its visibility strongly relying on the shape of the Fermi arcs and their orientation relative to the strip electrodes, the latter clearly revealing the anisotropy of the Fermi arcs. Moreover, we show that the visibility of the oscillating pattern can be significantly enhanced by a magnetic field perpendicular to the surface taking advantage of the bulk-surface connected Weyl orbits. Our work offers an effective way to identify Fermi arc surface states through transport measurement and predicts the surface of Weyl semimetals as a novel platform for the implementation of 2D conductance oscillations.

show abstract

“…As a result, the negative MR due to the chiral anomaly can even have the opposite sign as the inter-node scattering is taken into account simultaneously [24]. Besides the smooth deformation of the Fermi surface, topological Lifshitz transition of the Fermi surface is studied as well in various topological materials [25][26][27][28][29][30], which is driven by different methods such as the temperature. An interesting question that arises is whether both the smooth deformation and the abrupt Lifshitz transition of the Fermi surface can be implemented by imposing a magnetic field, such that the underlying physics can be manifested under the same framework of MR measurements.…”

Section: Introductionmentioning

confidence: 99%

Sign reversal of magnetoresistivity in massive nodal-line semimetals due to Lifshitz transition of Fermi surface

Yang,

Geng,

Luo

et al. 2021

Preprint

View full text Add to dashboard Cite

Topological nodal-line semimetals offer an interesting research platform to explore novel phenomena associated with its torus-shaped Fermi surface. Here, we study magnetotransport in the massive nodal-line semimetal with spin-orbit coupling and finite Berry curvature distribution which exists in many candidates. The magnetic field leads to a deformation of the Fermi torus through its coupling to the orbital magnetic moment, which turns out to be the main scenario of the magnetoresistivity (MR) induced by the Berry curvature effect. We show that a small deformation of the Fermi surface yields a positive MR ∝ B 2 , different from the negative MR by pure Berry curvature effect in other topological systems. As the magnetic field increases to a critical value, a topological Lifshitz transition of the Fermi surface can be induced, and the MR inverts its sign at the same time. The temperature dependence of the MR is investigated, which shows a totally different behavior before and after the Lifshitz transition. Our work uncovers a novel scenario of the MR induced solely by the deformation of the Fermi surface and establishes a relation between the Fermi surface topology and the sign of the MR.

show abstract

Topological Lifshitz transition of the intersurface Fermi-arc loop in NbIrTe4

Cited by 23 publications

References 32 publications

Flatness and boundness of photonic drumhead surface state in a metallic lattice

Flatness and boundness of photonic drumhead surface state in a metallic lattice

Conductance oscillation in surface junctions of Weyl semimetals

Sign reversal of magnetoresistivity in massive nodal-line semimetals due to Lifshitz transition of Fermi surface

Contact Info

Product

Resources

About