125Te NMR in the single crystal of : Spin polarized CDW

Chudo, Hiroyuki; Michioka, Chishiro; Itoh, Yutaka; Yoshimura, Kazuyoshi

doi:10.1016/j.jmmm.2006.10.299

Cited by 3 publications

(1 citation statement)

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“…CeTe 3 also has an unconventional CDW interacting between the Ce local moments and the strong Ce spin fluctuations. [18,19] Scanning tunneling spectroscopy (STS) and Raman scattering measurements reveal that the CDW transition opens an energy gap of about 240 meV-740 meV in optimally nested regions on the FS. [20,21] Previous angle-resolved photoemission spectroscopy (ARPES) studies reported multiple shadow bands and FS reconstruction induced by the CDW transition.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure study of the charge-density-wave Kondo lattice CeTe₃

et al. 2023

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The behaviors of f electrons are crucial for understanding the rich phase diagrams and ground-state properties of heavy fermion (HF) systems. The complicated interactions between f electrons and conduction electrons largely enrich the basic properties of HF compounds. Here the electronic structure, especially the f-electron character, of the charge-density-wave (CDW) Kondo lattice compound CeTe3 has been studied by high resolution angle-resolved photoemission spectroscopy. A weakly dispersive quasiparticle band near the Fermi level has been observed directly, indicating hybridization between f electrons and conduction electrons. Temperature-dependent measurements conform the localized to itinerant transition of f electrons as the temperature decreases. Furthermore, an energy gap formed by one conduction band at low temperature is gradually closed with increasing temperature, which is probably originated from the CDW transition at extremely high temperature. In the meantime, with different photon energies and polarizations, orbital information of different electrons has also been acquired, which indicates the anisotropy and diverse symmetries of orbitals. Our results may help understand the complicated f-electron behaviors when considering its interaction with other electrons/photons in CeTe3 and other related compounds.

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Section: Introductionmentioning

confidence: 99%

Electronic structure study of the charge-density-wave Kondo lattice CeTe₃

et al. 2023

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Charge density waves beyond the Pauli paramagnetic limit in 2D systems

Aperis

Varelogiannis

2020

Journal of Applied Physics

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Two-dimensional materials are ideal candidates to host Charge Density Waves (CDWs) that exhibit paramagnetic limiting behavior, similar to the well-known case of superconductors. Here, we study how CDWs in two-dimensional systems can survive beyond the Pauli limit when they are subjected to a strong magnetic field by developing a generalized mean-field theory of CDWs under Zeeman fields that includes incommensurability, imperfect nesting, and temperature effects and the possibility of a competing or coexisting Spin Density Wave (SDW) order. Our numerical calculations yield rich phase diagrams with distinct high-field phases above the Pauli limiting field. For perfectly nested commensurate CDWs, a q-modulated CDW phase that is completely analogous to the superconducting Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) phase appears at high fields. In the more common case of imperfect nesting, the commensurate CDW ground state undergoes a series of magnetic-field-induced phase transitions first into a phase where commensurate CDW and SDW coexist and subsequently into another phase where CDW and SDW acquire a q-modulation that is, however, distinct from the pure FFLO CDW phase. The commensurate CDW + SDW phase occurs for fields comparable to but less than the Pauli limit and survives above it. Thus, this phase provides a plausible mechanism for the CDW to survive at high fields without the need for forming the more fragile FFLO phase. We suggest that the recently discovered 2D materials like the transition metal dichalcogenides offer a promising platform for observing such exotic field-induced CDW phenomena.

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