DOAJ Open Access 2025

Time-reversal symmetry breaking, collective modes, and Raman spectrum in pair-density-wave states

Yi-Ming Wu Andrey V. Chubukov Yuxuan Wang Steven A. Kivelson

Abstrak

Abstract Inspired by empirical evidence of the existence of pair-density-wave (PDW) order in certain underdoped cuprates, we investigate the collective modes in systems with unidirectional PDW order with momenta ± Q and a d-wave form-factor with special focus on the amplitude (Higgs) modes. In the pure PDW state, there are two overdamped Higgs modes. We show that a phase with co-existing PDW and uniform (d-wave) superconducting (SC) order, PDW/SC, spontaneously breaks time-reversal symmetry—and thus is distinct from a simpler phase, SC/CDW, with coexisting SC and charge-density-wave (CDW) order. The PDW/SC phase exhibits three Higgs modes, one of which is sharply peaked and is predominantly a PDW fluctuation, symmetric between Q and −Q, whose damping rate is strongly reduced by SC. This sharp mode should be visible in Raman experiments.

Topik & Kata Kunci

Materials of engineering and construction. Mechanics of materials Atomic physics. Constitution and properties of matter

Penulis (4)

Yi-Ming Wu

Andrey V. Chubukov

Yuxuan Wang

Steven A. Kivelson

Format Sitasi

APA MLA BibTeX

Wu, Y., Chubukov, A.V., Wang, Y., Kivelson, S.A. (2025). Time-reversal symmetry breaking, collective modes, and Raman spectrum in pair-density-wave states. https://doi.org/10.1038/s41535-025-00808-w

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1038/s41535-025-00808-w
Akses: Open Access ✓