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Electrical resistivity across a nematic quantum critical point

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Electrical resistivity across a nematic quantum critical point. / Licciardello, S.; Buhot, J.; Lu, J.; Ayres, J.; Kasahara, S.; Matsuda, Y.; Shibauchi, T.; Hussey, N. E.

In: Nature, Vol. 567, No. 7747, 14.03.2019, p. 213-217.

Research output: Contribution to journalArticle

Harvard

Licciardello, S, Buhot, J, Lu, J, Ayres, J, Kasahara, S, Matsuda, Y, Shibauchi, T & Hussey, NE 2019, 'Electrical resistivity across a nematic quantum critical point', Nature, vol. 567, no. 7747, pp. 213-217. https://doi.org/10.1038/s41586-019-0923-y

APA

Licciardello, S., Buhot, J., Lu, J., Ayres, J., Kasahara, S., Matsuda, Y., ... Hussey, N. E. (2019). Electrical resistivity across a nematic quantum critical point. Nature, 567(7747), 213-217. https://doi.org/10.1038/s41586-019-0923-y

Vancouver

Licciardello S, Buhot J, Lu J, Ayres J, Kasahara S, Matsuda Y et al. Electrical resistivity across a nematic quantum critical point. Nature. 2019 Mar 14;567(7747):213-217. https://doi.org/10.1038/s41586-019-0923-y

Author

Licciardello, S. ; Buhot, J. ; Lu, J. ; Ayres, J. ; Kasahara, S. ; Matsuda, Y. ; Shibauchi, T. ; Hussey, N. E. / Electrical resistivity across a nematic quantum critical point. In: Nature. 2019 ; Vol. 567, No. 7747. pp. 213-217.

Bibtex

@article{036898a3021942db9b74243e1d33f1e5,
title = "Electrical resistivity across a nematic quantum critical point",
abstract = "Correlated electron systems are highly susceptible to various forms of electronic order. By tuning the transition temperature towards absolute zero, striking deviations from conventional metallic (Fermi-liquid) behaviour can be realized. Evidence for electronic nematicity, a correlated electronic state with broken rotational symmetry, has been reported in a host of metallic systems1-5 that exhibit this so-called quantum critical behaviour. In all cases, however, the nematicity is found to be intertwined with other forms of order, such as antiferromagnetism5-7 or charge-density-wave order8, that might themselves be responsible for the observed behaviour. The iron chalcogenide FeSe1-xSx is unique in this respect because its nematic order appears to exist in isolation9-11, although until now, the impact of nematicity on the electronic ground state has been obscured by superconductivity. Here we use high magnetic fields to destroy the superconducting state in FeSe1-xSx and follow the evolution of the electrical resistivity across the nematic quantum critical point. Classic signatures of quantum criticality are revealed: an enhancement in the coefficient of the T2 resistivity (due to electron-electron scattering) on approaching the critical point and, at the critical point itself, a strictly T-linear resistivity that extends over a decade in temperature T. In addition to revealing the phenomenon of nematic quantum criticality, the observation of T-linear resistivity at a nematic critical point also raises the question of whether strong nematic fluctuations play a part in the transport properties of other 'strange metals', in which T-linear resistivity is observed over an extended regime in their respective phase diagrams.",
author = "S. Licciardello and J. Buhot and J. Lu and J. Ayres and S. Kasahara and Y. Matsuda and T. Shibauchi and Hussey, {N. E.}",
year = "2019",
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language = "English",
volume = "567",
pages = "213--217",
journal = "Nature",
issn = "0028-0836",
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RIS - suitable for import to EndNote

TY - JOUR

T1 - Electrical resistivity across a nematic quantum critical point

AU - Licciardello, S.

AU - Buhot, J.

AU - Lu, J.

AU - Ayres, J.

AU - Kasahara, S.

AU - Matsuda, Y.

AU - Shibauchi, T.

AU - Hussey, N. E.

PY - 2019/3/14

Y1 - 2019/3/14

N2 - Correlated electron systems are highly susceptible to various forms of electronic order. By tuning the transition temperature towards absolute zero, striking deviations from conventional metallic (Fermi-liquid) behaviour can be realized. Evidence for electronic nematicity, a correlated electronic state with broken rotational symmetry, has been reported in a host of metallic systems1-5 that exhibit this so-called quantum critical behaviour. In all cases, however, the nematicity is found to be intertwined with other forms of order, such as antiferromagnetism5-7 or charge-density-wave order8, that might themselves be responsible for the observed behaviour. The iron chalcogenide FeSe1-xSx is unique in this respect because its nematic order appears to exist in isolation9-11, although until now, the impact of nematicity on the electronic ground state has been obscured by superconductivity. Here we use high magnetic fields to destroy the superconducting state in FeSe1-xSx and follow the evolution of the electrical resistivity across the nematic quantum critical point. Classic signatures of quantum criticality are revealed: an enhancement in the coefficient of the T2 resistivity (due to electron-electron scattering) on approaching the critical point and, at the critical point itself, a strictly T-linear resistivity that extends over a decade in temperature T. In addition to revealing the phenomenon of nematic quantum criticality, the observation of T-linear resistivity at a nematic critical point also raises the question of whether strong nematic fluctuations play a part in the transport properties of other 'strange metals', in which T-linear resistivity is observed over an extended regime in their respective phase diagrams.

AB - Correlated electron systems are highly susceptible to various forms of electronic order. By tuning the transition temperature towards absolute zero, striking deviations from conventional metallic (Fermi-liquid) behaviour can be realized. Evidence for electronic nematicity, a correlated electronic state with broken rotational symmetry, has been reported in a host of metallic systems1-5 that exhibit this so-called quantum critical behaviour. In all cases, however, the nematicity is found to be intertwined with other forms of order, such as antiferromagnetism5-7 or charge-density-wave order8, that might themselves be responsible for the observed behaviour. The iron chalcogenide FeSe1-xSx is unique in this respect because its nematic order appears to exist in isolation9-11, although until now, the impact of nematicity on the electronic ground state has been obscured by superconductivity. Here we use high magnetic fields to destroy the superconducting state in FeSe1-xSx and follow the evolution of the electrical resistivity across the nematic quantum critical point. Classic signatures of quantum criticality are revealed: an enhancement in the coefficient of the T2 resistivity (due to electron-electron scattering) on approaching the critical point and, at the critical point itself, a strictly T-linear resistivity that extends over a decade in temperature T. In addition to revealing the phenomenon of nematic quantum criticality, the observation of T-linear resistivity at a nematic critical point also raises the question of whether strong nematic fluctuations play a part in the transport properties of other 'strange metals', in which T-linear resistivity is observed over an extended regime in their respective phase diagrams.

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