Enhancement of superconductivity at a quantum critical point in (CaxSr1-x)3Rh4Sn13

Krieger, J. A.; Guguchia, Z.; Khasanov, R.; Biswas, P. K.; Li, L.; Wang, K.; Petrovic, C.; Morenzoni, E.

doi:10.1088/1742-6596/2462/1/012060

Title: Enhancement of superconductivity at a quantum critical point in (Ca_xSr_1-x)₃Rh₄Sn₁₃

Abstract

We report microscopic studies by muon spin spectroscopy of the superconducting properties as a function of chemical and hydrostatic pressure in the cubic ternary intermetallic (Ca_xSr_1-x)₃Rh₄Sn₁₃ compounds. We find evidence of a quantum critical point at a critical pressure pc in the superconducting phase, where the superfluid density increases by a factor of two and the superconducting pairing strength displays a pronounced maximum. The enhancement of superconductivity is related to the structural phase transition at p_c, which is accompanied by profound changes of the Fermi surface associated to the suppression of a charge density wave (CDW). The quantum critical point separates a superconducting phase coexisting with CDW from a pure superconducting phase, while in both phases superconductivity has a strong-coupling phonon-mediated BCS-like s-wave character. Together with the related isoelectronic compound (Ca_xSr_1-x)₃Ir₄Sn₁₃, this system shows that conventional BCS superconductors in the presence of competing orders may display behaviour and characteristics of unconventional superconductors.

Authors:

Krieger, J. A. ^[1]; Guguchia, Z. ^[2]; Khasanov, R. ^[2]; Biswas, P. K. ^[2]; Li, L. ^[3]; Wang, K. ^[4];

^[5]; Morenzoni, E. ^[2]

Paul Scherrer Institute (PSI), Villigen (Switzerland); Max Planck Institute of Microstructure Physics, Weinburg (Germany)
Paul Scherrer Institute (PSI), Villigen (Switzerland)
Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics; Guangxi University, Nanning (China)
Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics; University of Maryland, College Park, MD (United States)
Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics

Publication Date:: Wed Mar 01 00:00:00 EST 2023

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNSF)

OSTI Identifier:: 1971485

Report Number(s):: BNL-224256-2023-JAAM
Journal ID: ISSN 1742-6588; TRN: US2313575

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. Conference Series

Additional Journal Information:: Journal Volume: 2462; Journal Issue: 1; Journal ID: ISSN 1742-6588

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Krieger, J. A., Guguchia, Z., Khasanov, R., Biswas, P. K., Li, L., Wang, K., Petrovic, C., and Morenzoni, E. Enhancement of superconductivity at a quantum critical point in (CaxSr1-x)3Rh4Sn13.  United States: N. p., 2023. 
Web.  doi:10.1088/1742-6596/2462/1/012060.

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                    Krieger, J. A., Guguchia, Z., Khasanov, R., Biswas, P. K., Li, L., Wang, K., Petrovic, C., & Morenzoni, E. Enhancement of superconductivity at a quantum critical point in (CaxSr1-x)3Rh4Sn13.  United States.  https://doi.org/10.1088/1742-6596/2462/1/012060

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                    Krieger, J. A., Guguchia, Z., Khasanov, R., Biswas, P. K., Li, L., Wang, K., Petrovic, C., and Morenzoni, E. Wed .  
"Enhancement of superconductivity at a quantum critical point in (CaxSr1-x)3Rh4Sn13".  United States.  https://doi.org/10.1088/1742-6596/2462/1/012060.  https://www.osti.gov/servlets/purl/1971485.

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@article{osti_1971485,

  title        = {Enhancement of superconductivity at a quantum critical point in (CaxSr1-x)3Rh4Sn13},

  author       = {Krieger, J. A. and Guguchia, Z. and Khasanov, R. and Biswas, P. K. and Li, L. and Wang, K. and Petrovic, C. and Morenzoni, E.},

  abstractNote = {We report microscopic studies by muon spin spectroscopy of the superconducting properties as a function of chemical and hydrostatic pressure in the cubic ternary intermetallic (CaxSr1-x)3Rh4Sn13 compounds. We find evidence of a quantum critical point at a critical pressure pc in the superconducting phase, where the superfluid density increases by a factor of two and the superconducting pairing strength displays a pronounced maximum. The enhancement of superconductivity is related to the structural phase transition at pc, which is accompanied by profound changes of the Fermi surface associated to the suppression of a charge density wave (CDW). The quantum critical point separates a superconducting phase coexisting with CDW from a pure superconducting phase, while in both phases superconductivity has a strong-coupling phonon-mediated BCS-like s-wave character. Together with the related isoelectronic compound (CaxSr1-x)3Ir4Sn13, this system shows that conventional BCS superconductors in the presence of competing orders may display behaviour and characteristics of unconventional superconductors.},

  doi          = {10.1088/1742-6596/2462/1/012060},

  journal      = {Journal of Physics. Conference Series},

  number       = 1,

  volume       = 2462,

  place        = {United States},

  year         = {Wed Mar 01 00:00:00 EST 2023},

  month        = {Wed Mar 01 00:00:00 EST 2023}

}

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Title: Enhancement of superconductivity at a quantum critical point in (CaxSr1-x)3Rh4Sn13

Abstract

Citation Formats

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Possible unconventional pairing in (Ca,Sr)3(Ir,Rh)4Sn13 superconductors revealed by controlling disorder journal, March 2022

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Superconducting Properties of Ca 3 T 4 Sn 13 (T = Co, Rh, and Ir) journal, January 2011

Crystal growth and crystal-chemical investigation of systems containing new superconducting and/or magnetic ternary stannides journal, June 1980

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Quasiparticle phenomenology for thermodynamics of strong-coupling superconductors journal, August 1973

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Lattice distortion associated with Fermi-surface reconstruction in Sr 3 Rh 4 Sn 13 journal, April 2015

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Title: Enhancement of superconductivity at a quantum critical point in (Ca_xSr_1-x)₃Rh₄Sn₁₃

The ratio $\frac{2 Δ_{0}}{k_{B} T_{c}}$ within Eliashberg theory
journal, January 1984

Colloquium : Theory of intertwined orders in high temperature superconductors
journal, May 2015

A new family of ternary intermetallic superconducting/magnetic stannides
journal, June 1980

Ambient Pressure Structural Quantum Critical Point in the Phase Diagram of ${({Ca}_{x} {Sr}_{1 - x})}_{3} {Rh}_{4} {Sn}_{13}$
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Evidence of a structural quantum critical point in ( Ca x Sr 1 − x ) 3 Rh 4 Sn 13 from a lattice dynamics study
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From quantum matter to high-temperature superconductivity in copper oxides
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Possible unconventional pairing in (Ca,Sr)3(Ir,Rh)4Sn13 superconductors revealed by controlling disorder
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Superconducting and magnetic properties of ${Sr}_{3} {Ir}_{4} {Sn}_{13}$
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The new versatile general purpose surface-muon instrument (GPS) based on silicon photomultipliers for μSR measurements on a continuous-wave beam
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Magnetic-flux distribution and the magnetic penetration depth in superconducting polycrystalline ${Bi}_{2}$ ${Sr}_{2}$ ${Ca}_{1 - x}$ $Y_{x}$ ${Cu}_{2}$ $O_{8 + δ}$ and ${Bi}_{2 - x}$ ${Pb}_{x}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8 + δ}$
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