Charge Density Wave order and electron-phonon coupling in ternary superconductor Bi${}_2$Rh${}_3$Se${}_2$

Abstract

The newly discovered ternary chalcogenide superconductor Bi${}_2$Rh${}_3$Se${}_2$ has attracted growing attention, which provides an opportunity to explore the interplay between charge density wave (CDW) order and superconductivity. However, whether the phase transition at 240 K can be attributed to CDW formation remains controversial. To help resolve the debate, we study the electronic structure study of Bi2Rh3Se2 by angle-resolved photoemission spectroscopy experiments, with emphasis on the nature of its high-temperature phase transition at 240 K. Our measurements demonstrate that the phase transition at 240 K is a second-order CDW phase transition. Our results reveal (i) a 2 x 2 CDW order in Bi${}_2$Rh${}_3$Se${}_2$, accompanied by the reconstruction of electronic structure, such as band folding, band splitting, and opening of CDW gaps at and away from Fermi level; (ii) the existence of electron-phonon coupling, which is manifested as an obvious kink and peak-dip-hump structure in dispersion; and (iii) the appearance of a flat band. Our observations thus enable us to shed light on the nature of the CDW order and its interplay with superconductivity in Bi${}_2$Rh${}_3$Se${}_2$.

arXiv comment5 pages, 5 figures

References in corpus (46)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• A Common Thread: the pairing interaction for the unconventional superconductors
• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• Antiferromagnetic order and spin dynamics in iron-based superconductors
• Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3
• Is LaO${}_{1-x}$F${}_x$FeAs an electron-phonon superconductor ?
• Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
• Quasiparticle relaxation dynamics in superconductors with different gap structures: theory and experiments on YBa_{2}Cu_{3}O_{7-δ}
• The effect of collective spin-1 excitations on electronic spectra in high-Tc superconductors
• Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates
• Multiple Nodeless Superconducting Gaps in (Ba0.6K0.4)Fe2As2 Superconductor from Angle-Resolved Photoemission Spectroscopy
• Electron-Phonon Coupling in High-Temperature Cuprate Superconductors Determined from Electron Relaxation Rates
• Superconductivity in KCa${}_2$Fe${}_4$As${}_4$F${}_2$ with Separate Double Fe${}_2$As${}_2$ Layers
• Electron-lattice interaction and its impact on high Tc superconductivity
• Electron relaxation in metals: Theory and exact analytical solutions
• Ultrafast dynamics of coherent optical phonons and nonequilibrium electrons in transition metals
• Ultrafast Dynamics Evidence of High Temperature Superconductivity in Single Unit Cell FeSe on SrTiO3
• Fermi surface dichotomy of the superconducting gap and pseudogap in underdoped pnictides
• Quasiparticle relaxation dynamics in heavy fermion compounds
• Band-dependent Quasiparticle Dynamics in Single Crystals of the Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ Superconductor Revealed by Pump-Probe Spectroscopy
• Quasiparticle dynamics and phonon softening in FeSe superconductors
• Lattice and electronic anomalies of CaFe_2As_2 studied by Raman spectroscopy
• Quasiparticle relaxation dynamics in spin-density-wave and superconducting SmFeAsO_{1-x}F_{x} single crystals
• Visualizing the microscopic coexistence of spin density wave and superconductivity in underdoped NaFe1-xCoxAs
• Electron-phonon coupling and charge gap in spin-density-wave iron-pnictides from quasiparticle relaxation dynamics
• Neutron spin resonance in a quasi-two-dimensional iron-based superconductor
• Doping dependence of femtosecond quasi-particle relaxation dynamics in Ba(Fe,Co)_2As_2 single crystals: possible evidence for normal state nematic fluctuations
• Ultrafast Quasiparticle Dynamics and Electron-Phonon Coupling in (Li0.84Fe0.16)OHFe0.98Se
• Nodal multigap superconductivity in KCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Single-crystal growth and extremely high H_c2 of 12442-type Fe-based superconductor KCa_2Fe_4As_4F_2
• Odd and even modes of neutron spin resonance in the bilayer iron-based superconductor CaKFe${}_4$As${}_4$
• Ultrafast quasiparticle relaxation dynamics in normal metals and heavy fermion materials
• Spectroscopic Evidence of Bilayer Splitting and Interlayer Pairing in an Iron Based Superconductor
• Neutron spin resonance in the 112-type iron-based superconductor
• Nonequilibrium Quasiparticle Relaxation Dynamics in Single Crystals of Hole and Electron doped BaFe${}_2$As${}_2$
• Friedel Oscillations of Vortex Bound States Under Extreme Quantum Limit in KCa2Fe4As4F2
• Strong Pauli paramagnetic effect in the upper critical field of KCa${}_2$Fe${}_4$As${}_4$F${}_2$
• NMR and NQR studies on transition-metal arsenide superconductors LaRu2As2, KCa2Fe4As4F2, and A2Cr3As3
• Band-selective clean- and dirty-limit superconductivity with nodeless gaps in the bilayer iron-based superconductor CsCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Single particle tunneling spectroscopy and superconducting gaps in layered iron based superconductor KCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Low temperature specific heat of 12442-type KCa_2Fe_4As_4F_2 single crystals
• Anisotropic physical properties and large critical current density in KCa${}_2$Fe${}_4$As${}_4$F${}_2$ single crystal
• Temperature evolution of quasiparticle dispersion dynamics in semimetallic 1T-TiTe2 via high-resolution angle-resolved photoemission spectroscopy and ultrafast optical pump-probe spectroscopy
• Dirac semimetal PdTe2 temperature-dependent quasiparticle dynamics and electron-phonon coupling
• High Tc superconductivity in CaKFe${}_4$As${}_4$ in absence of nematic fluctuations
• Study of pseudogap and superconducting quasiparticle dynamics in $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$ by time-resolved optical reflectivity

Cited by in corpus (13)

• Pseudogap and Strong Pairing Induced by Incipient and Shallow Bands in the Quasi-Two-Dimensional KCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Coupling of optical phonons with Kondo effect and magnetic orders in antiferromagnetic Kondo lattice CeAuSb${}_2$
• Second magnetization peak, anomalous field penetration, and Josephson vortices in KCa${}_2$Fe${}_4$As${}_4$F${}_2$ bilayer pnictide superconductor
• Evidence of electron interaction with an unidentified bosonic mode in superconductor CsCa${}_2$Fe${}_4$As${}_4$F${}_2$
• The Hidden Nematic Fluctuations in the Triclinic (Ca0.85La0.15)10(Pt3As8)(Fe2As2)5 Superconductor Revealed by Ultrafast Optical Spectroscopy
• Exploring Intrinsic Magnetic Topological Insulators: The Case of EuIn${}_2$As${}_2$
• Ultrafast photoinduced phase transition in the antiferromagnetic Dirac semimetal EuAgAs
• Interplay of electron-phonon coupling, pseudogap, and superconductivity in CsCa${}_2$Fe${}_4$As${}_4$F${}_2$ studied using ultrafast optical spectroscopy
• Order-disorder phase transition and elastic-to-plastic vortex creep crossover in a triclinic iron pnictide superconductor (Ca0.85La0.15)10(Pt3As8)(Fe2As2)5
• Preformed Cooper Pairs in a Triclinic Iron Pnictide Superconductor
• Multiple charge-density-wave gaps in LaSbTe and CeSbTe as revealed by ultrafast spectroscopy
• Decoupled interband pairing in a bilayer iron-based superconductor evidenced by ultrahigh-resolution ARPES
• Research on topological materials using ultrafast spectroscopy