Germans (chemistry)

Comparison of a measured and a simulated STM image of Germanic peoples on a 111-Au layer

Germanen (stress on the third syllable, English germanene ) is the name for a modification of germanium with a two-dimensional structure. It was discovered in September 2014. Similar substances are, for example, graphene and silicene .

Manufacture and Discovery

Germanic peoples were first created by applying atoms of the element germanium to a surface made of gold using molecular beam epitaxy . Studies on alternative manufacturing processes and carrier materials have been published by other research groups.

properties

Germanic is a "graphene-like nano-layer with bulges".

Theoretical calculations have shown that the physical properties of the Germanens resemble those of graphene and silicene.

Further germanium atoms can attach to an existing germanium layer in pairs, one atom of the pair on each side of the nano-layer. These couples attract each other and can form regular structures. These change the electrical and magnetic properties of the original Germanic.

Web links

References and footnotes

^ ME Dávila, L. Xian, S. Cahangirov, A. Rubio, G. Le Lay: Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene . In: New Journal of Physics . 16, No. 9, September 1, 2014, p. 095002. doi : 10.1088 / 1367-2630 / 16/9/095002 .
↑ Xue-Sheng Ye, Zhi-Gang Shao, Hongbo Zhao, Lei Yang, Cang-Long Wang: Intrinsic carrier mobility of germanene is larger than graphene's: first-principle calculations . In: RSC Advances . 4, No. 41, May 14, 2014, pp. 21216-21220. doi : 10.1039 / C4RA01802H .
↑ Z. Ni, Q. Liu, K. Tang, J. Zheng, J. Zhou, R. Qin, Z. Gao, D. Yu, J. Lu: Tunable bandgap in silicene and germanene. In: Nano letters. Volume 12, Number 1, January 2012, pp. 113-118, doi : 10.1021 / nl203065e . PMID 22050667 .
^ Emilio Scalise, Michel Houssa, Geoffrey Pourtois, B. van den Broek, Valery Afanas'ev, André Stesmans: Vibrational properties of silicene and germanene . In: Nano Research . 6, No. 1, January 1, 2013, pp. 19-28. doi : 10.1007 / s12274-012-0277-3 .
^ V. Ongun Özçelik, E. Durgun, Salim Ciraci: New Phases of Germanene . In: The Journal of Physical Chemistry Letters . 5, No. 15, August 7, 2014, pp. 2694-2699. doi : 10.1021 / jz500977v .

[Lay2014-1] ME Dávila, L. Xian, S. Cahangirov, A. Rubio, G. Le Lay: Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene . In: New Journal of Physics . 16, No. 9, September 1, 2014, p. 095002. doi : 10.1088 / 1367-2630 / 16/9/095002 .

[Ye2014-2] Xue-Sheng Ye, Zhi-Gang Shao, Hongbo Zhao, Lei Yang, Cang-Long Wang: Intrinsic carrier mobility of germanene is larger than graphene's: first-principle calculations . In: RSC Advances . 4, No. 41, May 14, 2014, pp. 21216-21220. doi : 10.1039 / C4RA01802H .

[Ni2014-3] Z. Ni, Q. Liu, K. Tang, J. Zheng, J. Zhou, R. Qin, Z. Gao, D. Yu, J. Lu: Tunable bandgap in silicene and germanene. In: Nano letters. Volume 12, Number 1, January 2012, pp. 113-118, doi : 10.1021 / nl203065e . PMID 22050667 .

[Scalise2014-4] Emilio Scalise, Michel Houssa, Geoffrey Pourtois, B. van den Broek, Valery Afanas'ev, André Stesmans: Vibrational properties of silicene and germanene . In: Nano Research . 6, No. 1, January 1, 2013, pp. 19-28. doi : 10.1007 / s12274-012-0277-3 .

[Ciraci2014-5] V. Ongun Özçelik, E. Durgun, Salim Ciraci: New Phases of Germanene . In: The Journal of Physical Chemistry Letters . 5, No. 15, August 7, 2014, pp. 2694-2699. doi : 10.1021 / jz500977v .