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Title: Unfolding the physics of URu2Si2 through silicon to phosphorus substitution

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms10712· OSTI ID:1395565

The heavy fermion intermetallic compound URu2Si2 exhibits a hidden-order phase below the temperature of 17.5 K, which supports both anomalous metallic behavior and unconventional superconductivity. While these individual phenomena have been investigated in detail, it remains unclear how they are related to each other and to what extent uranium f-electron valence fluctuations influence each one. Here we use ligand site substituted URu2Si2-xPx to establish their evolution under electronic tuning. We find that while hidden order is monotonically suppressed and destroyed for x ≤ 0.035, the superconducting strength evolves non-monotonically with a maximum near x ≈ 0.01 and that superconductivity is destroyed near x ≈ 0.028. This behavior reveals that hidden order depends strongly on tuning outside of the U f-electron shells. Furthermore, it also suggests that while hidden order provides an environment for superconductivity and anomalous metallic behavior, it’s fluctuations may not be solely responsible for their progression.

Research Organization:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-13ER16414; SC0010677
OSTI ID:
1395565
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (9)

Highly Sensitive Detection of Ionizing Radiations by a Photoluminescent Uranyl Organic Framework journal May 2017
Rapid suppression of the energy gap and the possibility of a gapless hidden order state in URu 2− x Re x Si 2 journal April 2019
Hidden order and beyond: an experimental—theoretical overview of the multifaceted behavior of URu 2 Si 2 journal January 2020
NMR investigation of antiferromagnetism and coherence in URu 2 Si 2 x P x journal January 2017
Pressure-induced rotational symmetry breaking in URu 2 Si 2 journal December 2018
Instability of the f -electron state in URu 2 Si 2 − x P x probed using high magnetic fields journal June 2019
Single Crystal Growth of URu2Si2 by the Modified Bridgman Technique journal October 2016
Pressure-induced rotational symmetry breaking in URu2Si2 text January 2018
Highly Sensitive Detection of Ionizing Radiations by a Photoluminescent Uranyl Organic Framework journal May 2017