Scanning SQUID characterization of extremely overdoped La2-xSrxCuO4

Herrera, Chloe; Franklin, Jacob; Božović, Ivan; He, Xi; Sochnikov, Ilya

doi:10.1103/physrevb.103.024528

Title: Scanning SQUID characterization of extremely overdoped La_2-xSr_xCuO₄

Abstract

Recently, advances in film synthesis methods have enabled a study of extremely overdoped ${La}_{2 - x} {Sr}_{x} Cu O_{4}$ . This has revealed a surprising behavior of the superfluid density as a function of doping and temperature, the explanation of which is vividly debated. One popular class of models posits electronic phase separation, where the superconducting phase fraction decreases with doping, while some competing phase (e.g., ferromagnetic) progressively takes over. A problem with this scenario is that all the way up to the dome edge the superconducting transition remains sharp, according to mutual inductance measurements. However, the physically relevant scale is the Pearl penetration depth $Λ_{P}$ , and this technique probes the sample on a length scale $L$ that is much larger than $Λ_{P}$ . In the present paper, we use local scanning superconducting quantum interference device (SQUID) measurements that probe the susceptibility of the sample on the scale $L << Λ_{P}$ . Our SQUID maps show uniform landscapes of susceptibility and excellent overall agreement of the local penetration depth data with the bulk measurements. Overall, these results contribute an important piece to the puzzle of how high-temperature superconductivity vanishes on the overdoped side of the cuprate phase diagram.

Authors:

Herrera, Chloe ^[1]; Franklin, Jacob ^[2];

^[3]; He, Xi ^[4];

^[5]

Univ. of Connecticut, Storrs, CT (United States); Lux Research, Boston, MA (United States)
Univ. of Connecticut, Storrs, CT (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Yale Univ., New Haven, CT (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Connecticut, Storrs, CT (United States); Univ. of Connecticut, Storrs, CT (United States). Inst. of Material Science

Publication Date:: Wed Jan 27 00:00:00 EST 2021

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

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation

OSTI Identifier:: 1762753

Report Number(s):: BNL-220893-2021-JAAM
Journal ID: ISSN 2469-9950; TRN: US2205904

Grant/Contract Number:: SC0012704; GBMF9074

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 103; Journal Issue: 2; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Methods in superconductivity; pairing mechanisms; penetration depth; cuprates; SQUID

Citation Formats


                    Herrera, Chloe, Franklin, Jacob, Božović, Ivan, He, Xi, and Sochnikov, Ilya. Scanning SQUID characterization of extremely overdoped La2-xSrxCuO4.  United States: N. p., 2021. 
Web.  doi:10.1103/physrevb.103.024528.

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                    Herrera, Chloe, Franklin, Jacob, Božović, Ivan, He, Xi, & Sochnikov, Ilya. Scanning SQUID characterization of extremely overdoped La2-xSrxCuO4.  United States.  https://doi.org/10.1103/physrevb.103.024528

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                    Herrera, Chloe, Franklin, Jacob, Božović, Ivan, He, Xi, and Sochnikov, Ilya. Wed .  
"Scanning SQUID characterization of extremely overdoped La2-xSrxCuO4".  United States.  https://doi.org/10.1103/physrevb.103.024528.  https://www.osti.gov/servlets/purl/1762753.

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@article{osti_1762753,

  title        = {Scanning SQUID characterization of extremely overdoped La2-xSrxCuO4},

  author       = {Herrera, Chloe and Franklin, Jacob and Božović, Ivan and He, Xi and Sochnikov, Ilya},

  abstractNote = {Recently, advances in film synthesis methods have enabled a study of extremely overdoped La2-xSrxCuO4. This has revealed a surprising behavior of the superfluid density as a function of doping and temperature, the explanation of which is vividly debated. One popular class of models posits electronic phase separation, where the superconducting phase fraction decreases with doping, while some competing phase (e.g., ferromagnetic) progressively takes over. A problem with this scenario is that all the way up to the dome edge the superconducting transition remains sharp, according to mutual inductance measurements. However, the physically relevant scale is the Pearl penetration depth ΛP, and this technique probes the sample on a length scale L that is much larger than ΛP. In the present paper, we use local scanning superconducting quantum interference device (SQUID) measurements that probe the susceptibility of the sample on the scale L<<ΛP. Our SQUID maps show uniform landscapes of susceptibility and excellent overall agreement of the local penetration depth data with the bulk measurements. Overall, these results contribute an important piece to the puzzle of how high-temperature superconductivity vanishes on the overdoped side of the cuprate phase diagram.},

  doi          = {10.1103/physrevb.103.024528},

  journal      = {Physical Review B},

  number       = 2,

  volume       = 103,

  place        = {United States},

  year         = {Wed Jan 27 00:00:00 EST 2021},

  month        = {Wed Jan 27 00:00:00 EST 2021}

}

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Title: Scanning SQUID characterization of extremely overdoped La2-xSrxCuO4

Abstract

Citation Formats

The Vanishing Superfluid Density in Cuprates—and Why It Matters journal, July 2018

Nonsinusoidal Current-Phase Relationship in Josephson Junctions from the 3D Topological Insulator HgTe journal, February 2015

Stripes of increased diamagnetic susceptibility in underdoped superconducting Ba ( Fe 1 − x Co x ) 2 As 2 single crystals: Evidence for an enhanced superfluid density at twin boundaries journal, May 2010

The critical temperature as a function of the number of Cooper pairs, and the superconductivity mechanism in a layered LaSrCuO crystal journal, December 2016

Direct Measurement of Current-Phase Relations in Superconductor/Topological Insulator/Superconductor Junctions journal, June 2013

Doping Dependence of Electromagnetic Response in Cuprate Superconductors journal, September 2019

Phase-fluctuating superconductivity in overdoped La2−xSrxCuO4 journal, March 2011

Optical conductivity of overdoped cuprate superconductors: Application to La 2 − x Sr x CuO 4 journal, August 2018

Muon spin rotation study of the correlation between T c and n s / m * in overdoped Tl 2 Ba 2 CuO 6 + δ journal, September 1993

A Local Maximum in the Superconducting Transition Temperature of Nb-Doped Strontium Titanate Under Uniaxial Compressive Stress journal, August 2019

From quantum matter to high-temperature superconductivity in copper oxides journal, February 2015

Theory of Superconductivity journal, December 1957

Scanning SQUID susceptometry of a paramagnetic superconductor journal, June 2012

High-Temperature Superconductivity in a Single Copper-Oxygen Plane journal, October 2009

Superconducting electrons go missing journal, August 2016

High-Temperature Superconducting Multilayers and Heterostructures Grown by Atomic Layer-By-Layer Molecular Beam Epitaxy journal, August 1995

BCS quantum critical phenomena journal, June 2017

Magnetic-field penetration depth in TI2Ba2CuO6+δ in the overdoped regime journal, August 1993

High-precision measurement of magnetic penetration depth in superconducting films journal, November 2016

Meissner response of anisotropic superconductors journal, September 2003

Unusual behavior of cuprates explained by heterogeneous charge localization journal, January 2019

Disorder and superfluid density in overdoped cuprate superconductors journal, July 2017

Variation of the in-plane penetration depth λ ab as a function of doping in La 2 − x Sr x CuO 4 ± δ thin films on SrTiO 3 : Implications for the overdoped state journal, September 1996

Search for ferromagnetic order in overdoped copper-oxide superconductors journal, April 2017

Dependence of the critical temperature in overdoped copper oxides on superfluid density journal, August 2016

Relativistic Ginzburg–Landau equation: An investigation for overdoped cuprate films journal, September 2020

Agreement between local and global measurements of the London penetration depth journal, December 2012

Precision Measurements of the AC Field Dependence of the Superconducting Transition in Strontium Titanate journal, September 2019

The influence of topological phase transition on the superfluid density of overdoped copper oxides journal, January 2017

Strain-engineered interaction of quantum polar and superconducting phases journal, December 2019

Superconductor-to-metal quantum phase transition in overdoped La 2 − x Sr x CuO 4 journal, April 2011

Superconducting properties of a nonideal bipolaron gas journal, June 2019

The Demise of Superfluid Density in Overdoped La2−x Sr x CuO4 Films Grown by Molecular Beam Epitaxy journal, September 2016

Constructing oxide interfaces and heterostructures by atomic layer-by-layer laser molecular beam epitaxy journal, February 2017

Atomic-layer engineering of superconducting oxides: yesterday, today, tomorrow journal, March 2001

Locating the Missing Superconducting Electrons in the Overdoped Cuprates La 2 − x Sr x CuO 4 journal, January 2019

Doping a Mott insulator: Physics of high-temperature superconductivity journal, January 2006

Magnetic penetration depth and condensate density of cuprate high- T c superconductors determined by muon-spin-rotation experiments journal, October 1995

Exact theory for superconductivity in a doped Mott insulator journal, July 2020

Superfluid response in monolayer high- T c cuprates journal, June 2003

Picoscale Magnetoelasticity Governs Heterogeneous Magnetic Domains in a Noncentrosymmetric Ferromagnetic Weyl Semimetal journal, February 2021

Can high- T c superconductivity in cuprates be explained by the conventional BCS theory? journal, June 2018

Universal Correlations between T c and n s m * (Carrier Density over Effective Mass) in High- T c Cuprate Superconductors journal, May 1989

Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples journal, May 2008

Title: Scanning SQUID characterization of extremely overdoped La_2-xSr_xCuO₄

The Vanishing Superfluid Density in Cuprates—and Why It Matters
journal, July 2018

Nonsinusoidal Current-Phase Relationship in Josephson Junctions from the 3D Topological Insulator HgTe
journal, February 2015

Stripes of increased diamagnetic susceptibility in underdoped superconducting $Ba {({Fe}_{1 - x} {Co}_{x})}_{2} {As}_{2}$ single crystals: Evidence for an enhanced superfluid density at twin boundaries
journal, May 2010

The critical temperature as a function of the number of Cooper pairs, and the superconductivity mechanism in a layered LaSrCuO crystal
journal, December 2016

Direct Measurement of Current-Phase Relations in Superconductor/Topological Insulator/Superconductor Junctions
journal, June 2013

Doping Dependence of Electromagnetic Response in Cuprate Superconductors
journal, September 2019

Phase-fluctuating superconductivity in overdoped La2−xSrxCuO4
journal, March 2011

Optical conductivity of overdoped cuprate superconductors: Application to ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$
journal, August 2018

Muon spin rotation study of the correlation between $T_{c}$ and $n_{s}$ / $m^{*}$ in overdoped ${Tl}_{2}$ ${Ba}_{2}$ ${CuO}_{6 + δ}$
journal, September 1993

A Local Maximum in the Superconducting Transition Temperature of Nb-Doped Strontium Titanate Under Uniaxial Compressive Stress
journal, August 2019

From quantum matter to high-temperature superconductivity in copper oxides
journal, February 2015

Theory of Superconductivity
journal, December 1957

Scanning SQUID susceptometry of a paramagnetic superconductor
journal, June 2012

High-Temperature Superconductivity in a Single Copper-Oxygen Plane
journal, October 2009

Superconducting electrons go missing
journal, August 2016

High-Temperature Superconducting Multilayers and Heterostructures Grown by Atomic Layer-By-Layer Molecular Beam Epitaxy
journal, August 1995

BCS quantum critical phenomena
journal, June 2017

Magnetic-field penetration depth in TI2Ba2CuO6+δ in the overdoped regime
journal, August 1993

High-precision measurement of magnetic penetration depth in superconducting films
journal, November 2016

Meissner response of anisotropic superconductors
journal, September 2003

Unusual behavior of cuprates explained by heterogeneous charge localization
journal, January 2019

Disorder and superfluid density in overdoped cuprate superconductors
journal, July 2017

Variation of the in-plane penetration depth $λ_{ab}$ as a function of doping in ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4 \pm δ}$ thin films on ${SrTiO}_{3}$ : Implications for the overdoped state
journal, September 1996

Search for ferromagnetic order in overdoped copper-oxide superconductors
journal, April 2017

Dependence of the critical temperature in overdoped copper oxides on superfluid density
journal, August 2016

Relativistic Ginzburg–Landau equation: An investigation for overdoped cuprate films
journal, September 2020

Agreement between local and global measurements of the London penetration depth
journal, December 2012

Precision Measurements of the AC Field Dependence of the Superconducting Transition in Strontium Titanate
journal, September 2019

The influence of topological phase transition on the superfluid density of overdoped copper oxides
journal, January 2017

Strain-engineered interaction of quantum polar and superconducting phases
journal, December 2019

Superconductor-to-metal quantum phase transition in overdoped La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$
journal, April 2011

Superconducting properties of a nonideal bipolaron gas
journal, June 2019

The Demise of Superfluid Density in Overdoped La2−x Sr x CuO4 Films Grown by Molecular Beam Epitaxy
journal, September 2016

Constructing oxide interfaces and heterostructures by atomic layer-by-layer laser molecular beam epitaxy
journal, February 2017

Atomic-layer engineering of superconducting oxides: yesterday, today, tomorrow
journal, March 2001

Locating the Missing Superconducting Electrons in the Overdoped Cuprates ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$
journal, January 2019

Doping a Mott insulator: Physics of high-temperature superconductivity
journal, January 2006

Magnetic penetration depth and condensate density of cuprate high- $T_{c}$ superconductors determined by muon-spin-rotation experiments
journal, October 1995

Exact theory for superconductivity in a doped Mott insulator
journal, July 2020

Superfluid response in monolayer high- $T_{c}$ cuprates
journal, June 2003

Picoscale Magnetoelasticity Governs Heterogeneous Magnetic Domains in a Noncentrosymmetric Ferromagnetic Weyl Semimetal
journal, February 2021

Can high- T _c superconductivity in cuprates be explained by the conventional BCS theory?
journal, June 2018

Universal Correlations between $T_{c}$ and $\frac{n_{s}}{m^{*}}$ (Carrier Density over Effective Mass) in High- $T_{c}$ Cuprate Superconductors
journal, May 1989

Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples
journal, May 2008