Emergent symmetry in a low-dimensiona superconductor on the edge of Mottness

P. Chudzinski; M. Berben; Xiaofeng Xu; N. Wakeham; B. Bernáth; C. Duffy; R. D.H. Hinlopen; Yu Te Hsu; S. Wiedmann; P. Tinnemans; Rongying Jin; M. Greenblatt; N. E. Hussey

doi:10.1126/science.abp8948

Emergent symmetry in a low-dimensiona superconductor on the edge of Mottness

P. Chudzinski, M. Berben, Xiaofeng Xu, N. Wakeham, B. Bernáth, C. Duffy, R. D.H. Hinlopen, Yu Te Hsu, S. Wiedmann, P. Tinnemans, Rongying Jin, M. Greenblatt, N. E. Hussey

School of Arts and Sciences, Chemistry & Chemical Biology

Rutgers, The State University

Research output: Contribution to journal › Article › peer-review

Abstract

Upon cooling, condensed-matter systems typically transition into states of lower symmetry. The converse—i.e., the emergence of higher symmetry at lower temperatures—is extremely rare. In this work, we show how an unusually isotropic magnetoresistance in the highly anisotropic, one-dimensional conductor Li_0.9Mo₆O₁₇ and its temperature dependence can be interpreted as a renormalization group (RG) flow toward a so-called separatrix. This approach is equivalent to an emergent symmetry in the system. The existence of two distinct ground states, Mott insulator and superconductor, can then be traced back to two opposing RG trajectories. By establishing a direct link between quantum field theory and an experimentally measurable quantity, we uncover a path through which emergent symmetry might be identified in other candidate materials.

Original language	American English
Pages (from-to)	792-796
Number of pages	5
Journal	Science
Volume	382
Issue number	6672
DOIs	https://doi.org/10.1126/science.abp8948
State	Published - Nov 17 2023

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title = "Emergent symmetry in a low-dimensiona superconductor on the edge of Mottness",

abstract = "Upon cooling, condensed-matter systems typically transition into states of lower symmetry. The converse—i.e., the emergence of higher symmetry at lower temperatures—is extremely rare. In this work, we show how an unusually isotropic magnetoresistance in the highly anisotropic, one-dimensional conductor Li0.9Mo6O17 and its temperature dependence can be interpreted as a renormalization group (RG) flow toward a so-called separatrix. This approach is equivalent to an emergent symmetry in the system. The existence of two distinct ground states, Mott insulator and superconductor, can then be traced back to two opposing RG trajectories. By establishing a direct link between quantum field theory and an experimentally measurable quantity, we uncover a path through which emergent symmetry might be identified in other candidate materials.",

author = "P. Chudzinski and M. Berben and Xiaofeng Xu and N. Wakeham and B. Bern{\'a}th and C. Duffy and Hinlopen, {R. D.H.} and Hsu, {Yu Te} and S. Wiedmann and P. Tinnemans and Rongying Jin and M. Greenblatt and Hussey, {N. E.}",

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T1 - Emergent symmetry in a low-dimensiona superconductor on the edge of Mottness

AU - Chudzinski, P.

AU - Berben, M.

AU - Xu, Xiaofeng

AU - Wakeham, N.

AU - Bernáth, B.

AU - Duffy, C.

AU - Hinlopen, R. D.H.

AU - Hsu, Yu Te

AU - Wiedmann, S.

AU - Tinnemans, P.

AU - Jin, Rongying

AU - Greenblatt, M.

AU - Hussey, N. E.

PY - 2023/11/17

Y1 - 2023/11/17

N2 - Upon cooling, condensed-matter systems typically transition into states of lower symmetry. The converse—i.e., the emergence of higher symmetry at lower temperatures—is extremely rare. In this work, we show how an unusually isotropic magnetoresistance in the highly anisotropic, one-dimensional conductor Li0.9Mo6O17 and its temperature dependence can be interpreted as a renormalization group (RG) flow toward a so-called separatrix. This approach is equivalent to an emergent symmetry in the system. The existence of two distinct ground states, Mott insulator and superconductor, can then be traced back to two opposing RG trajectories. By establishing a direct link between quantum field theory and an experimentally measurable quantity, we uncover a path through which emergent symmetry might be identified in other candidate materials.

AB - Upon cooling, condensed-matter systems typically transition into states of lower symmetry. The converse—i.e., the emergence of higher symmetry at lower temperatures—is extremely rare. In this work, we show how an unusually isotropic magnetoresistance in the highly anisotropic, one-dimensional conductor Li0.9Mo6O17 and its temperature dependence can be interpreted as a renormalization group (RG) flow toward a so-called separatrix. This approach is equivalent to an emergent symmetry in the system. The existence of two distinct ground states, Mott insulator and superconductor, can then be traced back to two opposing RG trajectories. By establishing a direct link between quantum field theory and an experimentally measurable quantity, we uncover a path through which emergent symmetry might be identified in other candidate materials.

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JO - Science

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ER -

Emergent symmetry in a low-dimensiona superconductor on the edge of Mottness

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