Journal Article

PUBDB-2025-04332

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Pressure-modulated competition between dual charge density waves in NbSe$_3$

Zhao, Y. ; Glazyrin, K.XFEL.EU*DESY* ; Bereciartua, P. J. ; Plueckthun, C. ; Kulkarni, S. ; Li, N. ; Yan, L. ; Zhang, K. ; Wang, B. ; Wang, Y. ; Zhang, J. ; Giordano, N. ; Berger, H. ; Wang, X. ; Francoual, S. (Corresponding author)DESY* ; Yang, W. (Corresponding author)Extern*XFEL.EU* ; Hoesch, M.DESY*

2026
Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/s48z-19pt  doi:10.3204/PUBDB-2025-04332

Abstract: Controlling collective electronic states through clean and reversible external stimuli is crucial for realizing functional quantum materials. Here, we report a study on temperature (𝑇) and pressure (𝑃)-tuned charge-density-wave (CDW) orders in the quasi-one-dimensional system of NbS⁢e$_3$, through single-crystal x-ray diffraction, and electric and magnetotransport measurements. A refined and extended phase diagram is presented, prompting a reevaluation of earlier claims regarding the coexistence of CDW and superconductivity (SC). Here, SC is found to emerge only once all long-range CDWs are suppressed. Notably, the anomalous Hall and magnetoresistance (MR) effects observed at low pressure (LP∼0.8GPa) may arise from distinct carrier types associated with the two competing CDWs, CDW1 and CDW2. These two coexisting CDWs, characterized by distinct modulation vectors, 𝒒$_𝟏$ and 𝒒$_𝟐$, show pressure-induced opposing shifts in their 𝑏* axis projections (denoted as $𝑞^{𝑏*}_1$ and $𝑞^{𝑏*}_2$), while preserving a phase-coupling relationship 2(𝒒$_𝟏$+𝒒$_𝟐$) ∼[111]. Upon gradual suppression of the long range order CDW2 order, $𝑞^{𝑏*}_1$ of CDW1 stabilizes and enters a decoupled regime within ∼0.8−1.3 GPa, followed by a pronounced change in its periodicity between ∼1.3 and 2.9 GPa. Above 2.9 GPa, all long-range CDW orders vanish, giving way to emergent superconductivity (SC).

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Contributing Institute(s):

1. PETRA-S (FS-PETRA-S)
2. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. FS-Proposal: I-20200224 (I-20200224) (I-20200224)
3. FS-Proposal: I-20200290 EC (I-20200290-EC) (I-20200290-EC)
4. FS-Proposal: I-20221379 (I-20221379) (I-20221379)
5. FS-Proposal: I-20230421 (I-20230421) (I-20230421)

Experiment(s):

1. PETRA Beamline P02.2 (PETRA III)
2. PETRA Beamline P09 (PETRA III)
3. DESY NanoLab: Sample Preparation

Appears in the scientific report 2026

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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