Molecular beam epitaxy of phase-pure antiperovskite Sr3SnO thin films

Wu, Wangzhou; Combs, Nicholas G.; Stemmer, Susanne

doi:10.1063/5.0068187

Cited by 5 publications

(15 citation statements)

References 29 publications

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“…Meanwhile, excess amounts of Sr flux are used to achieve adsorption-controlled growth. Confirming this scenario, high Sr/SnO flux ratios of 12.5 [24] or 13-17 [23] were needed to produce high quality Sr 3 SnO films. The growth temperatures were 400-600 • C [23] and 650 • C [24], showcasing that at least for Sr 3 SnO, this adsorption-controlled growth can be realized in a wide range of substrate temperatures.…”

Section: Solid-source Sno2 For Sr3sno Growthmentioning

confidence: 92%

“…Confirming this scenario, high Sr/SnO flux ratios of 12.5 [24] or 13-17 [23] were needed to produce high quality Sr 3 SnO films. The growth temperatures were 400-600 • C [23] and 650 • C [24], showcasing that at least for Sr 3 SnO, this adsorption-controlled growth can be realized in a wide range of substrate temperatures. This is also reasonable because SnO is much less volatile compared to Sr [23].…”

Section: Solid-source Sno2 For Sr3sno Growthmentioning

confidence: 92%

“…Adjusting the flux or determining the appropriate substrate temperature posed a challenge due to the lack of a prior report on MBE growth. This is especially the case when three elements need to be controlled independently, and we do note that other recent MBE works have utilized SnO/SnO 2 as a source to circumvent this issue [23,24]. To streamline the growth, we used a diagram like the one in Fig.…”

Section: Mbe Growth Of A3bo Antiperovskites a Identification Of Growt...mentioning

confidence: 99%

“…In this section, we describe an alternative MBE growth approach for Sr 3 SnO films. Instead of controlling Sr, Sn, and O separately, both Ma et al and Wu et al used Sr and the binary oxide SnO 2 as solid sources [23,24]. Upon heating, SnO 2 gives rise to SnO and O 2 fluxes, which provide Sn and O species presumably close to an ideal atomic ratio of 1:1.…”

Section: Solid-source Sno2 For Sr3sno Growthmentioning

confidence: 99%

“…Molecular beam epitaxy (MBE), first developed for Sr 3 PbO [21], enabled tunable carrier densities (n) in Sr 3 SnO and facilitated detailed analyses of threedimensional weak antilocalization [22]. Alternative MBE growth approaches for Sr 3 SnO were also reported [23,24]. All the experimental evidence, including ARPES, points to the correctness of the bulk band structure predicted by theories, although critical information such as the value of E g in A 3 BO antiperovskites is still missing.…”

Section: Introductionmentioning

confidence: 99%

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Perspective: Molecular beam epitaxy of antiperovskite oxides

Nakamura,

Huang,

Takagi

2022

Preprint

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Antiperovskites, or inverse perovskites, have recently emerged as a material class with a plethora of promising electronic properties. This perspective describes the molecular beam epitaxy (MBE) growth of oxide antiperovskites Sr3PbO and Sr3SnO. We show that MBE offers great potential not only in growing antiperovskites with high structural quality, but also in providing a means to seamlessly connect with advanced characterization tools, including x-ray photoelectron spectroscopy (XPS), low-energy electron diffraction (LEED), reflection high-energy electron diffraction (RHEED), and scanning tunneling microscopy (STM), to facilitate the analyses of their intrinsic properties. The initial results point toward the feasibility of atomically controlled antiperovskite growth, which could open doors to study topological and correlated electronic states in an electronic environment quite distinct from what is available in conventional complex oxides.

show abstract

Section: Solid-source Sno2 For Sr3sno Growthmentioning

confidence: 92%

Section: Solid-source Sno2 For Sr3sno Growthmentioning

confidence: 92%

Section: Mbe Growth Of A3bo Antiperovskites a Identification Of Growt...mentioning

confidence: 99%

Section: Solid-source Sno2 For Sr3sno Growthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Perspective: Molecular beam epitaxy of antiperovskite oxides

Nakamura,

Huang,

Takagi

2022

Preprint

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Structure inversion asymmetry enhanced electronic structure and electrical transport in 2D A3SnO (A = Ca, Sr, and Ba) anti-perovskite monolayers

et al. 2022

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Anti-perovskites A3SnO (A = Ca, Sr, and Ba) are an important class of materials due to the emergence of Dirac cones and tiny mass gaps in their band structures originating from an intricate interplay of crystal symmetry, spin-orbit coupling, and band overlap. This provides an exciting playground for modulating their electronic properties in the two-dimensional (2D) limit. Herein, we employ first-principles density functional theory (DFT) calculations by combining dispersion-corrected SCAN + rVV10 and mBJ functionals for a comprehensive side-by-side comparison of the structural, thermodynamic, dynamical, mechanical, electronic, and thermoelectric properties of bulk and monolayer (one unit cell thick) A3SnO anti-perovskites. Our results show that 2D monolayers derived from bulk A3SnO anti-perovskites are structurally and energetically stable. Moreover, Rashba-type splitting in the electronic structure of Ca3SnO and Sr3SnO monolayers is observed owing to strong spin-orbit coupling and inversion asymmetry. On the other hand, monolayer Ba3SnO exhibits Dirac cone at the high-symmetry Γ point due to the domination of band overlap. Based on the predicted electronic transport properties, it is shown that inversion asymmetry plays an essential character such that the monolayers Ca3SnO and Sr3SnO outperform thermoelectric performance of their bulk counterparts.

show abstract

Molecular beam epitaxy of antiperovskite oxides

2022

View full text Add to dashboard Cite

Antiperovskites, or inverse perovskites, have recently emerged as a material class with a plethora of promising electronic properties. This Perspective describes the molecular beam epitaxy (MBE) growth of oxide antiperovskites Sr3PbO and Sr3SnO. We show that MBE offers great potential in regard to not only growing antiperovskites with high structural quality but also providing a means for seamless integration with advanced characterization techniques, including x-ray photoelectron spectroscopy, low-energy electron diffraction, reflection high-energy electron diffraction, and scanning tunneling microscopy, to facilitate the analyses of their intrinsic properties. The initial results point toward the feasibility of atomically controlled antiperovskite growth, which can open doors to study topological and correlated electronic states in an electronic environment quite distinct from what is available in conventional complex oxides.

show abstract

Molecular beam epitaxy of phase-pure antiperovskite Sr3SnO thin films

Cited by 5 publications

References 29 publications

Perspective: Molecular beam epitaxy of antiperovskite oxides

Perspective: Molecular beam epitaxy of antiperovskite oxides

Structure inversion asymmetry enhanced electronic structure and electrical transport in 2D A3SnO (A = Ca, Sr, and Ba) anti-perovskite monolayers

Molecular beam epitaxy of antiperovskite oxides

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