Evidence for Dirac nodal-line fermions in a phosphorous square-net superconductor

Ishizaka, Satoshi; Ino, A.; Kono, Takashi; Miyai, Yukio; Kumar, Shiv; Shimada, Kenya; Kitô, Hijiri; Hase, Izumi; Ishida, Shigeyuki; Oka, Kunihiko; Fujihisa, Hiroshi; Gotoh, Yoshito; Yoshida, Yoshiyuki; Iyo, A.; Eisaki, H.; Kawashima, Kenji; Yanagi, Yousuke; Kimura, Akio

doi:10.1103/physrevb.105.l121103

Cited by 3 publications

(1 citation statement)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inspired by the fundamental research interest, [26][27][28] successful preliminary attempts for potential applications, [29,30] and limited experiment-realized Dirac nodal line fermion (DNLF) systems, [31][32][33][34] people show increasing enthusiasm at search and design of DNLF systems. To date, only a few 2D cases have been reported, such as 2D covalent organic frameworks (COFs), [35] Lieb lattices [36,37] and 2D pentagonal group-IVA chalcogenide materials.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of honeycomb AuTe monolayer with Dirac nodal line fermions

et al. 2023

View full text Add to dashboard Cite

Two-dimensional honeycomb lattices show great potential in the realization of Dirac nodal line fermions (DNLFs). Here, we successfully synthesized a gold telluride (AuTe) monolayer by direct tellurizing an Au(111) substrate. Low energy electron diffraction measurements reveal that it is (2×2) AuTe layer stacked onto (3×3) Au(111) substrate. Moreover, scanning tunneling microscopy images show that the AuTe layer has a honeycomb structure. Scanning transmission electron microscopy reveals that it is a single-atom layer. In addition, first-principles calculations demonstrate that the honeycomb AuTe monolayer exhibits Dirac nodal line features protected by mirror symmetry, which is validated by angle-resolved photoemission spectra. Our results establish that monolayer AuTe can be a good candidate to investigate 2D DNLFs and provides opportunities to realize high-speed low-dissipation devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Fabrication of honeycomb AuTe monolayer with Dirac nodal line fermions

et al. 2023

View full text Add to dashboard Cite

show abstract

Topological insulating phase in nonsymmorphic bulk AX2 (A = Ca, Sr, or Ba; and X = As, Sb, or Bi) compounds

Purwitasari,

Sufyan,

Villaos

et al. 2024

Applied Physics Letters

View full text Add to dashboard Cite

Owing to their unique topologically protected gapless boundary states, topological insulators (TIs) are attracting substantial interest in spintronics and quantum computing. Here, we discuss the structural, electronic, and topological properties of bulk alkaline earth di-pnictides AX2 (where A= Ca, Sr, or Ba and X= As, Sb, or Bi) using first-principles calculations under the hybrid functional approach. Our structural analysis based on phonon dispersion and molecular dynamics calculations establishes the thermodynamic stability of these materials and indicates their potential for synthesis. All investigated compounds are shown to host nontrivial phases upon including spin–orbit coupling. CaAs2, SrSb2, and BaSb2 are found to be strong TIs with sizable bandgaps of up to 213 meV. Nontrivial topology in the case of SrSb2 was further confirmed through surface state computations which showed the presence of gapless surface states. In addition, we demonstrate that using the hybrid functional approach can enhance the accuracy of the calculations to predict experimental findings. Finally, our study suggests that the alkaline earth di-pnictide family would provide a promising materials platform for developing applications of TIs.

show abstract

Quasilinear magnetoresistance and de Haas–van Alphen quantum oscillations in a LuPb2 single crystal

Yang

Chi

et al. 2023

Phys. Rev. B

View full text Add to dashboard Cite

Evidence for Dirac nodal-line fermions in a phosphorous square-net superconductor

Cited by 3 publications

References 25 publications

Fabrication of honeycomb AuTe monolayer with Dirac nodal line fermions

Fabrication of honeycomb AuTe monolayer with Dirac nodal line fermions

Topological insulating phase in nonsymmorphic bulk AX2 (A = Ca, Sr, or Ba; and X = As, Sb, or Bi) compounds

Quasilinear magnetoresistance and de Haas–van Alphen quantum oscillations in a LuPb2 single crystal

Contact Info

Product

Resources

About