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Spinodal Superlattices of Topological Insulators

Publication ,  Journal Article
Usanmaz, D; Nath, P; Toher, C; Plata, JJ; Friedrich, R; Fornari, M; Buongiorno Nardelli, M; Curtarolo, S
Published in: Chemistry of Materials
April 10, 2018

Spinodal decomposition is proposed for stabilizing self-assembled interfaces between topological insulators (TIs) by combining layers of iso-structural and iso-valent TlBiX2 (X = S, Se, Te) materials. The composition range for gapless states is addressed concurrently to the study of thermodynamically driven boundaries. By tailoring composition, the TlBiS2-TlBiTe2 system might produce both spinodal superlattices and two-dimensional eutectic microstructures, either concurrently or separately. The dimensions and topological nature of the metallic channels are determined by following the spatial distribution of the charge density and the spin-texture. The results validate the proof of concept for obtaining spontaneously forming two-dimensional TI-conducting channels embedded into three-dimensional insulating environments without any vacuum interfaces. Since spinodal decomposition is a controllable kinetic phenomenon, its leverage could become the long-sought enabler for effective TI technological deployment.

Duke Scholars

Published In

Chemistry of Materials

DOI

EISSN

1520-5002

ISSN

0897-4756

Publication Date

April 10, 2018

Volume

30

Issue

7

Start / End Page

2331 / 2340

Related Subject Headings

  • Materials
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
 

Citation

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Usanmaz, D., Nath, P., Toher, C., Plata, J. J., Friedrich, R., Fornari, M., … Curtarolo, S. (2018). Spinodal Superlattices of Topological Insulators. Chemistry of Materials, 30(7), 2331–2340. https://doi.org/10.1021/acs.chemmater.7b05299
Usanmaz, D., P. Nath, C. Toher, J. J. Plata, R. Friedrich, M. Fornari, M. Buongiorno Nardelli, and S. Curtarolo. “Spinodal Superlattices of Topological Insulators.” Chemistry of Materials 30, no. 7 (April 10, 2018): 2331–40. https://doi.org/10.1021/acs.chemmater.7b05299.
Usanmaz D, Nath P, Toher C, Plata JJ, Friedrich R, Fornari M, et al. Spinodal Superlattices of Topological Insulators. Chemistry of Materials. 2018 Apr 10;30(7):2331–40.
Usanmaz, D., et al. “Spinodal Superlattices of Topological Insulators.” Chemistry of Materials, vol. 30, no. 7, Apr. 2018, pp. 2331–40. Scopus, doi:10.1021/acs.chemmater.7b05299.
Usanmaz D, Nath P, Toher C, Plata JJ, Friedrich R, Fornari M, Buongiorno Nardelli M, Curtarolo S. Spinodal Superlattices of Topological Insulators. Chemistry of Materials. 2018 Apr 10;30(7):2331–2340.
Journal cover image

Published In

Chemistry of Materials

DOI

EISSN

1520-5002

ISSN

0897-4756

Publication Date

April 10, 2018

Volume

30

Issue

7

Start / End Page

2331 / 2340

Related Subject Headings

  • Materials
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences