Even odder after twenty-three years: the superconducting order parameter puzzle of Sr2RuO4

Andrew P Mackenzie; Thomas Scaffidi; Clifford W Hicks; Yoshiteru Maeno

doi:10.1038/s41535-017-0045-4

Even odder after twenty-three years: the superconducting order parameter puzzle of Sr₂RuO₄

Andrew P Mackenzie, Thomas Scaffidi, Clifford W Hicks, Yoshiteru Maeno

Research output: Contribution to journal › Review article › peer-review

Abstract

In this short review, we aim to provide a topical update on the status of efforts to understand the superconductivity of Sr₂RuO₄. We concentrate on the quest to identify a superconducting order parameter symmetry that is compatible with all the major pieces of experimental knowledge of the material, and highlight some major discrepancies that have become even clearer in recent years. As the pun in the title suggests, we have tried to start the discussion from scratch, making no assumptions even about fundamental issues such as the parity of the superconducting state. We conclude that no consensus is currently achievable in Sr₂RuO₄, and that the reasons for this go to the heart of how well some of the key probes of unconventional superconductivity are really understood. This is therefore a puzzle that merits continued in-depth study.

Original language	English
Article number	40
Number of pages	9
Journal	npj Quantum Materials
Volume	2
DOIs	https://doi.org/10.1038/s41535-017-0045-4
Publication status	Published - 18 Jul 2017

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Cite this

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title = "Even odder after twenty-three years: the superconducting order parameter puzzle of Sr2RuO4",

abstract = "In this short review, we aim to provide a topical update on the status of efforts to understand the superconductivity of Sr2RuO4. We concentrate on the quest to identify a superconducting order parameter symmetry that is compatible with all the major pieces of experimental knowledge of the material, and highlight some major discrepancies that have become even clearer in recent years. As the pun in the title suggests, we have tried to start the discussion from scratch, making no assumptions even about fundamental issues such as the parity of the superconducting state. We conclude that no consensus is currently achievable in Sr2RuO4, and that the reasons for this go to the heart of how well some of the key probes of unconventional superconductivity are really understood. This is therefore a puzzle that merits continued in-depth study.",

author = "Mackenzie, {Andrew P} and Thomas Scaffidi and Hicks, {Clifford W} and Yoshiteru Maeno",

note = "Funding: Max Planck Society.",

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T1 - Even odder after twenty-three years

T2 - the superconducting order parameter puzzle of Sr2RuO4

AU - Mackenzie, Andrew P

AU - Scaffidi, Thomas

AU - Hicks, Clifford W

AU - Maeno, Yoshiteru

N1 - Funding: Max Planck Society.

PY - 2017/7/18

Y1 - 2017/7/18

N2 - In this short review, we aim to provide a topical update on the status of efforts to understand the superconductivity of Sr2RuO4. We concentrate on the quest to identify a superconducting order parameter symmetry that is compatible with all the major pieces of experimental knowledge of the material, and highlight some major discrepancies that have become even clearer in recent years. As the pun in the title suggests, we have tried to start the discussion from scratch, making no assumptions even about fundamental issues such as the parity of the superconducting state. We conclude that no consensus is currently achievable in Sr2RuO4, and that the reasons for this go to the heart of how well some of the key probes of unconventional superconductivity are really understood. This is therefore a puzzle that merits continued in-depth study.

AB - In this short review, we aim to provide a topical update on the status of efforts to understand the superconductivity of Sr2RuO4. We concentrate on the quest to identify a superconducting order parameter symmetry that is compatible with all the major pieces of experimental knowledge of the material, and highlight some major discrepancies that have become even clearer in recent years. As the pun in the title suggests, we have tried to start the discussion from scratch, making no assumptions even about fundamental issues such as the parity of the superconducting state. We conclude that no consensus is currently achievable in Sr2RuO4, and that the reasons for this go to the heart of how well some of the key probes of unconventional superconductivity are really understood. This is therefore a puzzle that merits continued in-depth study.

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DO - 10.1038/s41535-017-0045-4

M3 - Review article

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VL - 2

JO - npj Quantum Materials

JF - npj Quantum Materials

M1 - 40

ER -

Even odder after twenty-three years: the superconducting order parameter puzzle of Sr2RuO4

Abstract

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Even odder after twenty-three years: the superconducting order parameter puzzle of Sr₂RuO₄