Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn5

Nikola Maksimovic; Daniel H. Eilbott; Tessa Cookmeyer; Fanghui Wan; Jan Rusz; Vikram Nagarajan; Shannon C. Haley; Eran Maniv; Amanda Gong; Stefano Faubel; Ian M. Hayes; Ali Bangura; John Singleton; Johanna C. Palmstrom; Laurel Winter; Ross McDonald; Sooyoung Jang; Ping Ai; Yi Lin; Samuel Ciocys; Jacob Gobbo; Yochai Werman; Peter M. Oppeneer; Ehud Altman; Alessandra Lanzara; James G. Analytis

doi:https://doi.org/10.1126/science.aaz4566

Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn₅

Nikola Maksimovic, Daniel H. Eilbott, Tessa Cookmeyer, Fanghui Wan, Jan Rusz, Vikram Nagarajan, Shannon C. Haley, Eran Maniv, Amanda Gong, Stefano Faubel, Ian M. Hayes, Ali Bangura, John Singleton, Johanna C. Palmstrom, Laurel Winter, Ross McDonald, Sooyoung Jang, Ping Ai, Yi Lin, Samuel CiocysJacob Gobbo, Yochai Werman, Peter M. Oppeneer, Ehud Altman, Alessandra Lanzara, James G. Analytis

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

Abstract

The study of quantum phase transitions that are not clearly associated with broken symmetry is a major effort in condensed matter physics, particularly in regard to the problem of high-temperature superconductivity, for which such transitions are thought to underlie the mechanism of superconductivity itself. Here we argue that the putative quantum critical point in the prototypical unconventional superconductor CeCoIn₅ is characterized by the delocalization of electrons in a transition that connects two Fermi surfaces of different volumes, with no apparent broken symmetry. Drawing on established theory of f-electron metals, we discuss an interpretation for such a transition that involves the fractionalization of spin and charge, a model that effectively describes the anomalous transport behavior we measured for the Hall effect.

Original language	American English
Pages (from-to)	76-81
Number of pages	6
Journal	Science
Volume	375
Issue number	6576
DOIs	https://doi.org/10.1126/science.aaz4566
State	Published - 7 Jan 2022
Externally published	Yes

All Science Journal Classification (ASJC) codes

General

Access to Document

https://doi.org/10.1126/science.aaz4566

Cite this

Maksimovic, N., Eilbott, D. H., Cookmeyer, T., Wan, F., Rusz, J., Nagarajan, V., Haley, S. C., Maniv, E., Gong, A., Faubel, S., Hayes, I. M., Bangura, A., Singleton, J., Palmstrom, J. C., Winter, L., McDonald, R., Jang, S., Ai, P., Lin, Y., ... Analytis, J. G. (2022). Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn₅. Science, 375(6576), 76-81. https://doi.org/10.1126/science.aaz4566

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title = "Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn5",

abstract = "The study of quantum phase transitions that are not clearly associated with broken symmetry is a major effort in condensed matter physics, particularly in regard to the problem of high-temperature superconductivity, for which such transitions are thought to underlie the mechanism of superconductivity itself. Here we argue that the putative quantum critical point in the prototypical unconventional superconductor CeCoIn5 is characterized by the delocalization of electrons in a transition that connects two Fermi surfaces of different volumes, with no apparent broken symmetry. Drawing on established theory of f-electron metals, we discuss an interpretation for such a transition that involves the fractionalization of spin and charge, a model that effectively describes the anomalous transport behavior we measured for the Hall effect.",

author = "Nikola Maksimovic and Eilbott, {Daniel H.} and Tessa Cookmeyer and Fanghui Wan and Jan Rusz and Vikram Nagarajan and Haley, {Shannon C.} and Eran Maniv and Amanda Gong and Stefano Faubel and Hayes, {Ian M.} and Ali Bangura and John Singleton and Palmstrom, {Johanna C.} and Laurel Winter and Ross McDonald and Sooyoung Jang and Ping Ai and Yi Lin and Samuel Ciocys and Jacob Gobbo and Yochai Werman and Oppeneer, {Peter M.} and Ehud Altman and Alessandra Lanzara and Analytis, {James G.}",

year = "2022",

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doi = "https://doi.org/10.1126/science.aaz4566",

language = "American English",

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Maksimovic, N, Eilbott, DH, Cookmeyer, T, Wan, F, Rusz, J, Nagarajan, V, Haley, SC, Maniv, E, Gong, A, Faubel, S, Hayes, IM, Bangura, A, Singleton, J, Palmstrom, JC, Winter, L, McDonald, R, Jang, S, Ai, P, Lin, Y, Ciocys, S, Gobbo, J, Werman, Y, Oppeneer, PM, Altman, E, Lanzara, A & Analytis, JG 2022, 'Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn₅', Science, vol. 375, no. 6576, pp. 76-81. https://doi.org/10.1126/science.aaz4566

TY - JOUR

T1 - Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn5

AU - Maksimovic, Nikola

AU - Eilbott, Daniel H.

AU - Cookmeyer, Tessa

AU - Wan, Fanghui

AU - Rusz, Jan

AU - Nagarajan, Vikram

AU - Haley, Shannon C.

AU - Maniv, Eran

AU - Gong, Amanda

AU - Faubel, Stefano

AU - Hayes, Ian M.

AU - Bangura, Ali

AU - Singleton, John

AU - Palmstrom, Johanna C.

AU - Winter, Laurel

AU - McDonald, Ross

AU - Jang, Sooyoung

AU - Ai, Ping

AU - Lin, Yi

AU - Ciocys, Samuel

AU - Gobbo, Jacob

AU - Werman, Yochai

AU - Oppeneer, Peter M.

AU - Altman, Ehud

AU - Lanzara, Alessandra

AU - Analytis, James G.

PY - 2022/1/7

Y1 - 2022/1/7

N2 - The study of quantum phase transitions that are not clearly associated with broken symmetry is a major effort in condensed matter physics, particularly in regard to the problem of high-temperature superconductivity, for which such transitions are thought to underlie the mechanism of superconductivity itself. Here we argue that the putative quantum critical point in the prototypical unconventional superconductor CeCoIn5 is characterized by the delocalization of electrons in a transition that connects two Fermi surfaces of different volumes, with no apparent broken symmetry. Drawing on established theory of f-electron metals, we discuss an interpretation for such a transition that involves the fractionalization of spin and charge, a model that effectively describes the anomalous transport behavior we measured for the Hall effect.

AB - The study of quantum phase transitions that are not clearly associated with broken symmetry is a major effort in condensed matter physics, particularly in regard to the problem of high-temperature superconductivity, for which such transitions are thought to underlie the mechanism of superconductivity itself. Here we argue that the putative quantum critical point in the prototypical unconventional superconductor CeCoIn5 is characterized by the delocalization of electrons in a transition that connects two Fermi surfaces of different volumes, with no apparent broken symmetry. Drawing on established theory of f-electron metals, we discuss an interpretation for such a transition that involves the fractionalization of spin and charge, a model that effectively describes the anomalous transport behavior we measured for the Hall effect.

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