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114 papers
Extraordinary Lifetime Enhancement of Coherent Phonon-Amplitude Modes in the Excitonic Insulator Phase of Ta2Pd3Te5
Anjan Kumar N M, Shuhan Wang, Snehashish Chatterjee +9
The excitonic insulator (EI) is an electronic phase of condensed excitons. However, in many prototypical materials the presence of a concurrent structural transition complicates th…
Bonding Signatures of Incipient Electron Localization in Topological Chiral Semimetals Near the Metal-Insulator Transition
Felix Hoff, Jonathan Frank, Mohit Raghuwanshi +11
How do electronic localization and delocalization compete in solids beyond the traditional limiting cases of metals and iono-covalent insulators? Topological chiral semimetals (TCS…
Second Harmonic Generation Spectroscopy of the Surface Charge Density Wave in the Weyl Semimetal CoSi
Awadhesh K. Das, Wesley E. Deeg, Sujan Subedi +3
Using temperature-dependent rotational anisotropy second harmonic generation (RA-SHG), we identify a charge density wave (CDW) instability on the CoSi (001) face with an onset temp…
Momentum Structure of Superconductivity and Sublattice Effects from Quasiparticle Interference in CsVSb
Aaron G. Greenberg, Xinze Yang, Junze Deng +11
Quantum interference encoded in the sublattice texture of kagome Bloch wavefunctions has been widely invoked as a route to correlated states, including chiral charge order, unconve…
Resilient =3/2 superconductivity in topological semimetal YPtBi
Prathum Saraf, Nicholas A. Crombie, Rahul Sharma +11
Cooper pairing in most of the known fermionic superfluids occurs via spin-1/2 quasiparticle interactions that lead to spin-singlet or spin-triplet pairing. In the topological semim…
Magneto-optic phonon resonances in magnetic topological EuCd2As2 via helical Raman spectroscopy
Jin Ho Kang, Liangbo Liang, Ioannis Petrides +6
EuCd2As2 materials have two magnetic ordering states: antiferromagnetic (AFM) and ferromagnetic (FM) when their chemical tunability is utilized. While AFM-EuCd2As2 has a nonzero ma…