The effect of magnetic and non-magnetic ion damage on the surface state in SmB6

Wakeham, N.; Wen, J.; Wang, Y. Q.; Fisk, Z.; Ronning, F.; Thompson, J. D.

doi:10.1016/j.jmmm.2015.07.045

Title: The effect of magnetic and non-magnetic ion damage on the surface state in SmB₆

Abstract

SmB₆ is a Kondo insulator with a band structure that is topologically distinct from the vacuum. We theoretically predict this in order to produce metallic topological surface states that are robust to perturbations that do not break time reversal symmetry, such as non-magnetic defects. But, the surface state may be destroyed by an impurity with a sufficiently large magnetic moment. In order to test this prediction we show measurements of the resistance of the surface state of single crystals of SmB₆ with varying levels of damage induced by magnetic and non-magnetic ion irradiation. Finally, we find that at a sufficiently high concentration of damage the surface state reconstructs below an amorphous damaged layer, whether the damage was caused by a magnetic or non-magnetic ion.

Authors:

Wakeham, N. ^[1]; Wen, J. ^[2];

^[1]; Fisk, Z. ^[3];

^[1];

^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lanzhou Univ., Gansu (China)
Univ. of California, Irvine, CA (United States)

Publication Date:: Tue Jul 14 00:00:00 EDT 2015

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1374355

Alternate Identifier(s):: OSTI ID: 1396746

Report Number(s):: LA-UR-17-22973
Journal ID: ISSN 0304-8853

Grant/Contract Number:: AC52-06NA25396

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Magnetism and Magnetic Materials

Additional Journal Information:: Journal Volume: 400; Journal Issue: C; Journal ID: ISSN 0304-8853

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Material Science; SmB6; Topological Kondo insulator; magnetic; damage

Citation Formats


                    Wakeham, N., Wen, J., Wang, Y. Q., Fisk, Z., Ronning, F., and Thompson, J. D. The effect of magnetic and non-magnetic ion damage on the surface state in SmB6.  United States: N. p., 2015. 
Web.  doi:10.1016/j.jmmm.2015.07.045.

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                    Wakeham, N., Wen, J., Wang, Y. Q., Fisk, Z., Ronning, F., & Thompson, J. D. The effect of magnetic and non-magnetic ion damage on the surface state in SmB6.  United States.  https://doi.org/10.1016/j.jmmm.2015.07.045

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                    Wakeham, N., Wen, J., Wang, Y. Q., Fisk, Z., Ronning, F., and Thompson, J. D. Tue .  
"The effect of magnetic and non-magnetic ion damage on the surface state in SmB6".  United States.  https://doi.org/10.1016/j.jmmm.2015.07.045.  https://www.osti.gov/servlets/purl/1374355.

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@article{osti_1374355,

  title        = {The effect of magnetic and non-magnetic ion damage on the surface state in SmB6},

  author       = {Wakeham, N. and Wen, J. and Wang, Y. Q. and Fisk, Z. and Ronning, F. and Thompson, J. D.},

  abstractNote = {SmB6 is a Kondo insulator with a band structure that is topologically distinct from the vacuum. We theoretically predict this in order to produce metallic topological surface states that are robust to perturbations that do not break time reversal symmetry, such as non-magnetic defects. But, the surface state may be destroyed by an impurity with a sufficiently large magnetic moment. In order to test this prediction we show measurements of the resistance of the surface state of single crystals of SmB6 with varying levels of damage induced by magnetic and non-magnetic ion irradiation. Finally, we find that at a sufficiently high concentration of damage the surface state reconstructs below an amorphous damaged layer, whether the damage was caused by a magnetic or non-magnetic ion.},

  doi          = {10.1016/j.jmmm.2015.07.045},

  journal      = {Journal of Magnetism and Magnetic Materials},

  number       = C,

  volume       = 400,

  place        = {United States},

  year         = {Tue Jul 14 00:00:00 EDT 2015},

  month        = {Tue Jul 14 00:00:00 EDT 2015}

}

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Works referenced in this record:

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Title: The effect of magnetic and non-magnetic ion damage on the surface state in SmB6

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Title: The effect of magnetic and non-magnetic ion damage on the surface state in SmB₆

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