Stress-Induced Band Gap and Related Phenomena in Gray Tin

Baburske, Roman; Ewald, Andrea

doi:10.1103/physrevb.5.3914

Cited by 85 publications

(38 citation statements)

References 28 publications

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“…As the film thickness is reduced the character of this Dirac cone crosses over from 3D to 2D. In addition, our first-principles calculations demonstrate that -Sn can be a topological insulator or a TDS depending on the sign of applied strain, solving the discrepancy between our discovery and the prior reports [17].…”

contrasting

confidence: 53%

“…Prior studies have reported instead a TI phase under strain [17,19]. The differences can be attributed to either a different direction -(001) [19] or a different sign of the strain [17]. Fig.…”

mentioning

confidence: 99%

“…A prior experimental study reported that a band gap opened in -Sn when compressive strain was applied along (111) or (001) direction [17], which broke the cubic symmetry. Liang Fu et al theoretically proposed that such an insulator phase was a strong 3D topological insulator [18].…”

mentioning

confidence: 99%

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Elemental Topological Dirac Semimetal: α -Sn on InSb(111)

et al. 2017

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Three-dimensional (3D) topological Dirac semimetals (TDSs) are rare but important as a versatile platform for exploring exotic electronic properties and topological phase transitions. A quintessential feature of TDSs is 3D Dirac fermions associated with bulk electronic states near the Fermi level. Using angle-resolved photoemission spectroscopy (ARPES), we have observed such bulk Dirac cones in epitaxially-grown 𝛼-Sn films on InSb(111), the first such TDS system realized in an elemental form. First-principles calculations confirm that epitaxial strain is key to the formation of the TDS phase. A phase diagram is established that connects the 3D TDS phase through a singular point of a zero-gap semimetal phase to a topological insulator (TI) phase. The nature of the Dirac cone crosses over from 3D to 2D as the film thickness is reduced.

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contrasting

confidence: 53%

mentioning

confidence: 99%

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Elemental Topological Dirac Semimetal: α -Sn on InSb(111)

et al. 2017

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“…В обычных полупроводниках типа InSb это приводит к отщеплению зоны легких дырок от зоны тяжелых дырок, а в полупроводниках с инверсной зонной структурой происходит отщепление зоны проводимости, т. е. образуется запрещенная зона. Этот эффект наблюдался Роменом и Эвальдом 93 , исследовавшими явления пере-носа в a-Sn при одноосном сжатии. По мере увеличения нагрузки на тем-пературной зависимости коэффициента Холла наблюдался переход от зависимости…”

Section: общая характеристика теллурида ртути *)unclassified

“…Таким образом, доноры будут всегда ионизованы, и уже при Т = О .концентрация свободных электронов будет равна концентрации доноров. Деионизацию доноров удается наблюдать только при наложении одноос-лого сжатия, т. е. одновременно с появлением запрещенной зоны 93 . Иначе ведут себя акцепторы.…”

Section: в) структура валентной Is оныunclassified

Mercury telluride—a zero-gap semiconductor

Berchenko¹,

Pashkovskii²

1976

Usp. Fiz. Nauk

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*) Кроме того, переход в бесщелевое состояние под действием внешних парамет-ров (изменение состава, гидростатического давления и т. п.) экспериментально наблю-дался в сплаве полуметаллов Ъ\ 1-х Sh x V и сплаве полупроводников Pb 1 _. x Sn a .Te,,

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Hybrid Dispersion Dirac Semimetal and Hybrid Weyl Phases in Luttinger Semimetals: A Dynamical Approach

Ghorashi

2019

Annalen der Physik

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It is shown that hybrid Dirac and Weyl semimetals can be realized in a 3D Luttinger semimetal with quadratic band touching (QBT). This is illustrated using a periodic kicking scheme. In particular, the focus is on a momentum‐dependent driving (nonuniform driving) and the realization of various hybrid Dirac and Weyl semimetals is demonstrated. A unique hybrid dispersion Dirac semimetal with two nodes is identified, where one of the nodes is linear while the other is dispersed quadratically. Next, it is shown that by tilting QBT via periodic driving and in the presence of an external magnetic field, one can realize various single/double hybrid Weyl semimetals depending on the strength of external field. Finally, it is noted that in principle, phases that are found in this work can also be realized by employing the appropriate electronic interactions.

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Stress-Induced Band Gap and Related Phenomena in Gray Tin

Cited by 85 publications

References 28 publications

Elemental Topological Dirac Semimetal: α -Sn on InSb(111)

Elemental Topological Dirac Semimetal: α -Sn on InSb(111)

Mercury telluride—a zero-gap semiconductor

Hybrid Dispersion Dirac Semimetal and Hybrid Weyl Phases in Luttinger Semimetals: A Dynamical Approach

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