Journal Article

PUBDB-2024-06656

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Absence of bulk charge density wave order in the normal state of UTe$_2$

Kengle, C. (Corresponding author)Extern* ; Vonka, J. ; Francoual, S.DESY* ; Chang, J. ; Abbamonte, P. ; Janoschek, M. ; Rosa, P. F. S. ; Simeth, W. (Corresponding author)Extern*

2024
Nature Publishing Group UK [London]

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Please use a persistent id in citations: doi:10.1038/s41467-024-53739-8  doi:10.3204/PUBDB-2024-06656

Abstract: A spatially modulated superconducting state, known as pair density wave (PDW), is a tantalizing state of matter with unique properties. Recent scanning tunneling microscopy (STM) studies revealed that spin-triplet superconductor UTe$_2$ hosts an unprecedented spin-triplet, multi-component PDW whose three wavevectors are indistinguishable from a preceding charge-density wave (CDW) order that survives to temperatures well above the superconducting critical temperature, Tc. Whether the PDW is the mother or a subordinate order remains unsettled. Here, based on a systematic search for bulk charge order above Tc using resonant elastic X-ray scattering (REXS), we show that the structure factor of charge order previously identified by STM is absent in the bulk within the sensitivity of REXS. Our results invite two scenarios: either the density-wave orders condense simultaneously at T$_c$ in the bulk, in which case PDW order is likely the mother phase, or the charge modulations are restricted to the surface.

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Contributing Institute(s):

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

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20221340 EC (I-20221340-EC) (I-20221340-EC)
4. PSI-FELLOW-III-3i - International, Interdisciplinary & Intersectoral Postdoctoral Fellowships at the Paul Scherrer Institut (884104) (884104)

Experiment(s):

1. PETRA Beamline P09 (PETRA III)

Appears in the scientific report 2024

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