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Title: Robust odd-parity superconductivity in the doped topological insulator Nb x Bi 2 Se 3

Abstract

We present resistivity and magnetization measurements on proton-irradiated crystals demonstrating that the superconducting state in the doped topological insulator Nb xBi 2Se 3 (x = 0.25) is surprisingly robust against disorder-induced electron scattering. The superconducting transition temperature Tc decreases without indication of saturation with increasing defect concentration, and the corresponding scattering rates far surpass expectations based on conventional theory. The low-temperature variation of the London penetration depth Δλ(T) follows a power law [Δλ(T)~T 2] indicating the presence of symmetry-protected point nodes. Lastly, our results are consistent with the proposed robust nematic E u pairing state in this material.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [3];  [4];  [4];  [4];  [5];  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Notre Dame, Notre Dame, IN (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Missouri Univ. of Science and Technology, Rolla, MO (United States)
  4. Western Michigan Univ., Kalamazoo MI (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division; Swiss National Science Foundation (SNSF); National Science Foundation (NSF); USDOE
OSTI Identifier:
1402061
Alternate Identifier(s):
OSTI ID: 1394020
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 11; 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

Citation Formats

Smylie, M. P., Willa, K., Claus, H., Snezhko, A., Martin, I., Kwok, W. -K., Qiu, Y., Hor, Y. S., Bokari, E., Niraula, P., Kayani, A., Mishra, V., and Welp, U. Robust odd-parity superconductivity in the doped topological insulator NbxBi2Se3. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.115145.
Smylie, M. P., Willa, K., Claus, H., Snezhko, A., Martin, I., Kwok, W. -K., Qiu, Y., Hor, Y. S., Bokari, E., Niraula, P., Kayani, A., Mishra, V., & Welp, U. Robust odd-parity superconductivity in the doped topological insulator NbxBi2Se3. United States. doi:10.1103/PhysRevB.96.115145.
Smylie, M. P., Willa, K., Claus, H., Snezhko, A., Martin, I., Kwok, W. -K., Qiu, Y., Hor, Y. S., Bokari, E., Niraula, P., Kayani, A., Mishra, V., and Welp, U. Fri . "Robust odd-parity superconductivity in the doped topological insulator NbxBi2Se3". United States. doi:10.1103/PhysRevB.96.115145. https://www.osti.gov/servlets/purl/1402061.
@article{osti_1402061,
title = {Robust odd-parity superconductivity in the doped topological insulator NbxBi2Se3},
author = {Smylie, M. P. and Willa, K. and Claus, H. and Snezhko, A. and Martin, I. and Kwok, W. -K. and Qiu, Y. and Hor, Y. S. and Bokari, E. and Niraula, P. and Kayani, A. and Mishra, V. and Welp, U.},
abstractNote = {We present resistivity and magnetization measurements on proton-irradiated crystals demonstrating that the superconducting state in the doped topological insulator NbxBi2Se3 (x = 0.25) is surprisingly robust against disorder-induced electron scattering. The superconducting transition temperature Tc decreases without indication of saturation with increasing defect concentration, and the corresponding scattering rates far surpass expectations based on conventional theory. The low-temperature variation of the London penetration depth Δλ(T) follows a power law [Δλ(T)~T2] indicating the presence of symmetry-protected point nodes. Lastly, our results are consistent with the proposed robust nematic Eu pairing state in this material.},
doi = {10.1103/PhysRevB.96.115145},
journal = {Physical Review B},
number = 11,
volume = 96,
place = {United States},
year = {2017},
month = {9}
}

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Cited by: 12 works
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Works referenced in this record:

Topological insulators and superconductors
journal, October 2011


Impurity-induced states in conventional and unconventional superconductors
journal, May 2006


Unusual nature of fully gapped superconductivity in In-doped SnTe
journal, October 2013


The superconducting phases of UPt 3
journal, March 2002


Superconducting doped topological materials
journal, July 2015


Anomalous temperature dependence of the magnetic field penetration depth in superconducting UBe13
journal, June 1986

  • Gross, F.; Chandrasekhar, B. S.; Einzel, D.
  • Zeitschrift f�r Physik B Condensed Matter, Vol. 64, Issue 2
  • DOI: 10.1007/BF01303700

Thermodynamic evidence for nematic superconductivity in CuxBi2Se3
journal, October 2016

  • Yonezawa, Shingo; Tajiri, Kengo; Nakata, Suguru
  • Nature Physics, Vol. 13, Issue 2
  • DOI: 10.1038/nphys3907

Defect independence of the irreversibility line in proton-irradiated Y-Ba-Cu-O crystals
journal, August 1990

  • Civale, L.; Marwick, A. D.; McElfresh, M. W.
  • Physical Review Letters, Vol. 65, Issue 9, p. 1164-1167
  • DOI: 10.1103/PhysRevLett.65.1164

Topological surface states in nodal superconductors
journal, May 2015


Theory of dirty superconductors
journal, September 1959


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

  • Du, Guan; Li, YuFeng; Schneeloch, J.
  • Science China Physics, Mechanics & Astronomy, Vol. 60, Issue 3
  • DOI: 10.1007/s11433-016-0499-x

Enhanced superconducting pairing interaction in indium-doped tin telluride
journal, January 2009


Existence of Majorana Fermions and Topological Order in Nodal Superconductors with Spin-Orbit Interactions in External Magnetic Fields
journal, November 2010


Distinguishing d -wave superconductors from highly anisotropic s -wave superconductors
journal, June 1994


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


Effect of proton irradiation on superconductivity in optimally doped BaFe 2 ( As 1 x P x ) 2 single crystals
journal, March 2016


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


Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials
journal, March 2015


Critical temperature of an anisotropic superconductor containing both nonmagnetic and magnetic impurities
journal, October 1998


Finding a direction
journal, May 2016


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

  • Liu, Zhongheng; Yao, Xiong; Shao, Jifeng
  • Journal of the American Chemical Society, Vol. 137, Issue 33
  • DOI: 10.1021/jacs.5b06815

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

  • Pan, Y.; Nikitin, A. M.; Araizi, G. K.
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep28632

Search for Majorana Fermions in Superconductors
journal, April 2013


Magnetic penetration depth in unconventional superconductors
journal, June 2006


Optimizing the superconducting transition temperature and upper critical field of Sn 1 x In x Te
journal, July 2013


Gap renormalization in dirty anisotropic superconductors: Implications for the order parameter of the cuprates
journal, August 1994


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


Structure and properties of irradiation defects in YBa 2 Cu 3 O 7−x
journal, October 1999


Classification of topological quantum matter with symmetries
journal, August 2016


Unusual upper critical field behavior in Nb-doped bismuth selenides
journal, May 2017


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


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


Anomalous suppression of the superfluid density in the Cu x Bi 2 Se 3 superconductor upon progressive Cu intercalation
journal, November 2012


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


Doping- and irradiation-controlled pinning of vortices in BaFe 2 (As 1 x P x ) 2 single crystals
journal, October 2011


Nonmagnetic impurity effects in a three-dimensional topological superconductor: From p - to s -wave behaviors
journal, June 2014


The superconductivity of Sr 2 RuO 4 and the physics of spin-triplet pairing
journal, May 2003


Topological superconductors: a review
journal, May 2017


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

  • Matano, K.; Kriener, M.; Segawa, K.
  • Nature Physics, Vol. 12, Issue 9
  • DOI: 10.1038/nphys3781

Majorana returns
journal, September 2009