Superconducting and normal-state anisotropy of the doped topological insulator Sr0.1Bi2Se3

Smylie, M. P.; Willa, K.; Claus, H.; Koshelev, A. E.; Song, K. W.; Kwok, W. -K.; Islam, Z.; Gu, G. D.; Schneeloch, J. A.; Zhong, R. D.; Welp, U.

doi:10.1038/s41598-018-26032-0

Title: Superconducting and normal-state anisotropy of the doped topological insulator Sr_0.1Bi₂Se₃

Abstract

Sr_xBi₂Se₃ and the related compounds Cu_xBi₂Se₃ and Nb_xBi₂Se₃ have attracted considerable interest, as these materials may be realizations of unconventional topological superconductors. Superconductivity with T_c ~3 K in Sr_xBi₂Se₃ arises upon intercalation of Sr into the layered topological insulator Bi₂Se₃. Here we elucidate the anisotropy of the normal and superconducting state of Sr_0.1Bi₂Se₃ with angular dependent magnetotransport and thermodynamic measurements. High resolution x-ray diffraction studies underline the high crystalline quality of the samples. We demonstrate that the normal state electronic and magnetic properties of Sr_0.1Bi₂Se₃ are isotropic in the basal plane while we observe a large two-fold in-plane anisotropy of the upper critical field in the superconducting state. In conclusion, our results support the recently proposed odd-parity nematic state characterized by a nodal gap of Eu symmetry in Sr_xBi₂Se₃.

Authors:

^[1];

^[2]; Claus, H. ^[2];

^[2];

^[2]; Kwok, W. -K. ^[2]; Islam, Z. ^[2];

^[3];

^[4];

^[4]; Welp, U. ^[2]

Argonne National Lab. (ANL), Lemont, IL (United States); Univ. of Notre Dame, Notre Dame, IN (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)

Publication Date:: 2018-05-16

Research Org.:: Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Energy Frontier Research Center, Center for Emergent Superconductivity; University of Notre Dame; Swiss National Science Foundation (SNSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1439557

Alternate Identifier(s):: OSTI ID: 1459173

Report Number(s):: BNL-207809-2018-JAAM
Journal ID: ISSN 2045-2322; 140792; TRN: US1900625

Grant/Contract Number:: AC02-06CH11357; SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Electronic properties and materials; Magnetic properties and materials; Superconducting properties and materials; Topological matter; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Smylie, M. P., Willa, K., Claus, H., Koshelev, A. E., Song, K. W., Kwok, W. -K., Islam, Z., Gu, G. D., Schneeloch, J. A., Zhong, R. D., and Welp, U. Superconducting and normal-state anisotropy of the doped topological insulator Sr0.1Bi2Se3.  United States: N. p., 2018. 
Web.  https://doi.org/10.1038/s41598-018-26032-0.

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                    Smylie, M. P., Willa, K., Claus, H., Koshelev, A. E., Song, K. W., Kwok, W. -K., Islam, Z., Gu, G. D., Schneeloch, J. A., Zhong, R. D., & Welp, U. Superconducting and normal-state anisotropy of the doped topological insulator Sr0.1Bi2Se3.  United States.  https://doi.org/10.1038/s41598-018-26032-0

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                    Smylie, M. P., Willa, K., Claus, H., Koshelev, A. E., Song, K. W., Kwok, W. -K., Islam, Z., Gu, G. D., Schneeloch, J. A., Zhong, R. D., and Welp, U. Wed .  
"Superconducting and normal-state anisotropy of the doped topological insulator Sr0.1Bi2Se3".  United States.  https://doi.org/10.1038/s41598-018-26032-0.  https://www.osti.gov/servlets/purl/1439557.

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@article{osti_1439557,

  title        = {Superconducting and normal-state anisotropy of the doped topological insulator Sr0.1Bi2Se3},

  author       = {Smylie, M. P. and Willa, K. and Claus, H. and Koshelev, A. E. and Song, K. W. and Kwok, W. -K. and Islam, Z. and Gu, G. D. and Schneeloch, J. A. and Zhong, R. D. and Welp, U.},

  abstractNote = {SrxBi2Se3 and the related compounds CuxBi2Se3 and NbxBi2Se3 have attracted considerable interest, as these materials may be realizations of unconventional topological superconductors. Superconductivity with Tc ~3 K in SrxBi2Se3 arises upon intercalation of Sr into the layered topological insulator Bi2Se3. Here we elucidate the anisotropy of the normal and superconducting state of Sr0.1Bi2Se3 with angular dependent magnetotransport and thermodynamic measurements. High resolution x-ray diffraction studies underline the high crystalline quality of the samples. We demonstrate that the normal state electronic and magnetic properties of Sr0.1Bi2Se3 are isotropic in the basal plane while we observe a large two-fold in-plane anisotropy of the upper critical field in the superconducting state. In conclusion, our results support the recently proposed odd-parity nematic state characterized by a nodal gap of Eu symmetry in SrxBi2Se3.},

  doi          = {10.1038/s41598-018-26032-0},

  journal      = {Scientific Reports},

  number       = 1,

  volume       = 8,

  place        = {United States},

  year         = {2018},

  month        = {5}

}

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https://doi.org/10.1038/s41598-018-26032-0

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Figure 1: (a) Crystal structure of Sr_xBi₂Se₃, with directions a (blue), a^∗ (pink) and c (black) marked. The dopant Sr ion (blue) sits in the van der Waals gap between quintuple layers of Bi (green) and Se (red) ions. (b) The threefold symmetric basal plane. (c) Schematic presentation of themore »

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Similar Records

Title: Superconducting and normal-state anisotropy of the doped topological insulator Sr0.1Bi2Se3

Abstract

Citation Formats

Figures / Tables:

Topological insulators and superconductors journal, October 2011

Bulk Superconducting Phase with a Full Energy Gap in the Doped Topological Insulator Cu x Bi 2 Se 3 journal, March 2011

Magnetic-susceptibility anisotropy of single-crystal Bi 2 Sr 2 CaCu 2 O 8 journal, November 1990

Thermodynamic evidence for nematic superconductivity in CuxBi2Se3 journal, October 2016

Evidence of nodes in the order parameter of the superconducting doped topological insulator Nb x Bi 2 Se 3 via penetration depth measurements journal, November 2016

Topological surface states in nodal superconductors journal, May 2015

Upper critical field of anisotropic superconductors journal, April 1982

Superconductivity with two-fold symmetry in topological superconductor Sr x Bi2Se3 journal, January 2017

Time-Reversal-Invariant Topological Superconductors and Superfluids in Two and Three Dimensions journal, May 2009

Robust superconductivity with nodes in the superconducting topological insulator Cu x Bi 2 Se 3 : Zeeman orbital field and nonmagnetic impurities journal, February 2015

Odd-parity topological superconductor with nematic order: Application to Cu x Bi 2 Se 3 journal, September 2014

Odd-Parity Topological Superconductors: Theory and Application to Cu x Bi 2 Se 3 journal, August 2010

Quantum computing: The power of discord journal, June 2011

Topological Superconductivity in Cu x Bi 2 Se 3 journal, November 2011

Colloquium: Topological insulators journal, November 2010

Rotational Symmetry Breaking in a Trigonal Superconductor Nb-doped Bi 2 Se 3 journal, January 2017

Superconductivity with Topological Surface State in Sr x Bi 2 Se 3 journal, August 2015

Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices journal, April 2012

Rotational symmetry breaking in the topological superconductor SrxBi2Se3 probed by upper-critical field experiments journal, June 2016

Superconductivity by Sr intercalation in the layered topological insulator Bi 2 Se 3 journal, July 2015

Spin-triplet vortex state in the topological superconductor Cu x Bi 2 Se 3 journal, June 2011

Search for Majorana Fermions in Superconductors journal, April 2013

Classification of topological insulators and superconductors in three spatial dimensions journal, November 2008

Rotational isotropy breaking as proof for spin-polarized Cooper pairs in the topological superconductor Cu x Bi 2 Se 3 journal, September 2012

A topological Dirac insulator in a quantum spin Hall phase journal, April 2008

Multiple Fermi surfaces in superconducting Nb-doped Bi 2 Se 3 journal, July 2016

Time-reversal and rotation symmetry breaking superconductivity in Dirac materials journal, May 2017

Non-Abelian anyons and topological quantum computation journal, September 2008

Identification of nematic superconductivity from the upper critical field journal, September 2016

Exponential protection of zero modes in Majorana islands journal, March 2016

Evolution of the Fermi surface of a doped topological insulator with carrier concentration journal, November 2013

Drive the Dirac electrons into Cooper pairs in SrxBi2Se3 journal, February 2017

High-pressure study of the basal-plane anisotropy of the upper critical field of the topological superconductor Sr x Bi 2 Se 3 journal, October 2016

Orbital upper critical field and its anisotropy of clean one- and two-band superconductors journal, October 2012

Spin-Orbit Locking as a Protection Mechanism of the Odd-Parity Superconducting State against Disorder journal, October 2012

Quantum oscillations in Cu x Bi 2 Se 3 in high magnetic fields journal, November 2014

Odd-parity superconductors with two-component order parameters: Nematic and chiral, full gap, and Majorana node journal, November 2016

Superconductivity in Cu x Bi 2 Se 3 and its Implications for Pairing in the Undoped Topological Insulator journal, February 2010

Observation of topological order in a superconducting doped topological insulator journal, September 2010

Spin-rotation symmetry breaking in the superconducting state of CuxBi2Se3 journal, May 2016

Nematic topological superconducting phase in Nb-doped Bi2Se3 journal, October 2017

Point-contact spectroscopy of Cu 0.2 Bi 2 Se 3 single crystals journal, August 2012

Robust odd-parity superconductivity in the doped topological insulator Nb x Bi 2 Se 3 journal, September 2017

Majorana returns journal, September 2009

Multiple intertwined pairing states and temperature-sensitive gap anisotropy for superconductivity at a nematic quantum-critical point journal, November 2019

Effect of Sr doping on structure, morphology, and transport properties of Bi 2Se 3 epitaxial thin films journal, March 2019

Structural distortion behind the nematic superconductivity in Sr x Bi 2 Se 3 journal, October 2018

Zero Cu valence and superconductivity in high-quality C u x B i 2 S e 3 crystal journal, November 2019

Strain-driven nematicity of odd-parity superconductivity in Sr x Bi 2 Se 3 journal, December 2019

Nanocalorimetric evidence for nematic superconductivity in the doped topological insulator Sr 0.1 Bi 2 Se 3 journal, November 2018

Nematic superconductivity in Cu 1.5 ( PbSe ) 5 ( Bi 2 Se 3 ) 6 journal, December 2018

Quasiparticle Evidence for the Nematic State above T c in Sr x Bi 2 Se 3 journal, July 2019

Nematic Superconductivity in Doped Bi2Se3 Topological Superconductors journal, December 2018

Title: Superconducting and normal-state anisotropy of the doped topological insulator Sr_0.1Bi₂Se₃

Topological insulators and superconductors
journal, October 2011

Bulk Superconducting Phase with a Full Energy Gap in the Doped Topological Insulator ${Cu}_{x} {Bi}_{2} {Se}_{3}$
journal, March 2011

Magnetic-susceptibility anisotropy of single-crystal ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8}$
journal, November 1990

Thermodynamic evidence for nematic superconductivity in CuxBi2Se3
journal, October 2016

Evidence of nodes in the order parameter of the superconducting doped topological insulator ${Nb}_{x} {Bi}_{2} {Se}_{3}$ via penetration depth measurements
journal, November 2016

Topological surface states in nodal superconductors
journal, May 2015

Upper critical field of anisotropic superconductors
journal, April 1982

Superconductivity with two-fold symmetry in topological superconductor Sr x Bi2Se3
journal, January 2017

Time-Reversal-Invariant Topological Superconductors and Superfluids in Two and Three Dimensions
journal, May 2009

Robust superconductivity with nodes in the superconducting topological insulator ${Cu}_{x} {Bi}_{2} {Se}_{3}$ : Zeeman orbital field and nonmagnetic impurities
journal, February 2015

Odd-parity topological superconductor with nematic order: Application to ${Cu}_{x} {Bi}_{2} {Se}_{3}$
journal, September 2014

Odd-Parity Topological Superconductors: Theory and Application to ${Cu}_{x} {Bi}_{2} {Se}_{3}$
journal, August 2010

Quantum computing: The power of discord
journal, June 2011

Topological Superconductivity in ${Cu}_{x} {Bi}_{2} {Se}_{3}$
journal, November 2011

Colloquium: Topological insulators
journal, November 2010

Rotational Symmetry Breaking in a Trigonal Superconductor Nb-doped ${Bi}_{2} {Se}_{3}$
journal, January 2017

Superconductivity with Topological Surface State in Sr _x Bi ₂ Se ₃
journal, August 2015

Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices
journal, April 2012

Rotational symmetry breaking in the topological superconductor SrxBi2Se3 probed by upper-critical field experiments
journal, June 2016

Superconductivity by Sr intercalation in the layered topological insulator ${Bi}_{2} {Se}_{3}$
journal, July 2015

Spin-triplet vortex state in the topological superconductor Cu $_{x}$ Bi $_{2}$ Se $_{3}$
journal, June 2011

Search for Majorana Fermions in Superconductors
journal, April 2013

Classification of topological insulators and superconductors in three spatial dimensions
journal, November 2008

Rotational isotropy breaking as proof for spin-polarized Cooper pairs in the topological superconductor Cu $_{x}$ Bi $_{2}$ Se $_{3}$
journal, September 2012

A topological Dirac insulator in a quantum spin Hall phase
journal, April 2008

Multiple Fermi surfaces in superconducting Nb-doped ${Bi}_{2} {Se}_{3}$
journal, July 2016

Time-reversal and rotation symmetry breaking superconductivity in Dirac materials
journal, May 2017

Non-Abelian anyons and topological quantum computation
journal, September 2008

Identification of nematic superconductivity from the upper critical field
journal, September 2016

Exponential protection of zero modes in Majorana islands
journal, March 2016

Evolution of the Fermi surface of a doped topological insulator with carrier concentration
journal, November 2013

Drive the Dirac electrons into Cooper pairs in SrxBi2Se3
journal, February 2017

High-pressure study of the basal-plane anisotropy of the upper critical field of the topological superconductor ${Sr}_{x} {Bi}_{2} {Se}_{3}$
journal, October 2016

Orbital upper critical field and its anisotropy of clean one- and two-band superconductors
journal, October 2012

Spin-Orbit Locking as a Protection Mechanism of the Odd-Parity Superconducting State against Disorder
journal, October 2012

Quantum oscillations in ${Cu}_{x} {Bi}_{2} {Se}_{3}$ in high magnetic fields
journal, November 2014

Odd-parity superconductors with two-component order parameters: Nematic and chiral, full gap, and Majorana node
journal, November 2016

Superconductivity in ${Cu}_{x} {Bi}_{2} {Se}_{3}$ and its Implications for Pairing in the Undoped Topological Insulator
journal, February 2010

Observation of topological order in a superconducting doped topological insulator
journal, September 2010

Spin-rotation symmetry breaking in the superconducting state of CuxBi2Se3
journal, May 2016

Nematic topological superconducting phase in Nb-doped Bi2Se3
journal, October 2017

Point-contact spectroscopy of Cu $_{0.2}$ Bi $_{2}$ Se $_{3}$ single crystals
journal, August 2012

Robust odd-parity superconductivity in the doped topological insulator ${Nb}_{x} {Bi}_{2} {Se}_{3}$
journal, September 2017

Majorana returns
journal, September 2009

Multiple intertwined pairing states and temperature-sensitive gap anisotropy for superconductivity at a nematic quantum-critical point
journal, November 2019

Effect of Sr doping on structure, morphology, and transport properties of Bi 2Se 3 epitaxial thin films
journal, March 2019

Structural distortion behind the nematic superconductivity in Sr _x Bi ₂ Se ₃
journal, October 2018

Zero Cu valence and superconductivity in high-quality $C u_{x} B i_{2} S e_{3}$ crystal
journal, November 2019

Strain-driven nematicity of odd-parity superconductivity in ${Sr}_{x} {Bi}_{2} {Se}_{3}$
journal, December 2019

Nanocalorimetric evidence for nematic superconductivity in the doped topological insulator ${Sr}_{0.1} {Bi}_{2} {Se}_{3}$
journal, November 2018

Nematic superconductivity in ${Cu}_{1.5} {(PbSe)}_{5} {({Bi}_{2} {Se}_{3})}_{6}$
journal, December 2018

Quasiparticle Evidence for the Nematic State above $T_{c}$ in ${Sr}_{x} {Bi}_{2} {Se}_{3}$
journal, July 2019

Nematic Superconductivity in Doped Bi2Se3 Topological Superconductors
journal, December 2018