Lanthanum (oxy)boride thin films for thermionic emission applications

Bellucci, A.; Mastellone, Matteo; Orlando, S.; Girolami, M.; Generosi, Amanda; Paci, Barbara; Soltani, P.; Mezzi, A.; Kačiulis, S.; Polini, Riccardo; Trucchi, Daniele M.

doi:10.1016/j.apsusc.2019.01.230

Cited by 17 publications

(7 citation statements)

References 22 publications

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“…In general, oxidation of the RE at the surface can be an issue (see e.g. [114,115]) and hence, storage under UHV conditions at and after any SmB 6 surface treatment is advisable if clean surfaces are strived for. prepared, e.g.…”

Section: The Hexaboride Familymentioning

confidence: 99%

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB$_6$

Wirth,

Schlottmann

2022

Preprint

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Compounds within the hexaboride class of materials exhibit a wide variety of interesting physical phenomena, including polaron formation and quadrupolar order. In particular, SmB6 has recently drawn attention as it is considered a prototypical topological Kondo insulator. Evidence in favor of this concept, however, has proven experimentally difficult and controversial, partly because of the required temperatures and energy resolution. Here, a powerful tool is Scanning Tunneling Microscopy (STM) with its unique ability to give local, microscopic information that directly relates to the one-particle Green's function. Yet, STM on hexaborides is met with its own set of challenges. This article attempts to review the progress in STM investigations on hexaborides, with emphasis on SmB6 and its intriguing properties.

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Section: The Hexaboride Familymentioning

confidence: 99%

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB$_6$

Wirth,

Schlottmann

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In general, oxidation of the RE at the surface can be an issue (see e.g., refs. [114,115]) and hence, storage under UHV conditions at and after any SmB 6 surface treatment is advisable if clean surfaces are strived for.…”

Section: The Hexaboride Familymentioning

confidence: 99%

An STM Perspective on Hexaborides: Surface States of the Kondo Insulator SmB₆

Wirth

Schlottmann

2021

Adv Quantum Tech

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Compounds within the hexaboride class of materials exhibit a wide variety of interesting physical phenomena, including polaron formation and quadrupolar order. In particular, SmB6 has recently drawn attention as it is considered a prototypical topological Kondo insulator. Evidence in favor of this concept, however, has proven experimentally difficult and controversial, partly because of the required temperatures and energy resolution. Here, a powerful tool is scanning tunneling microscopy (STM) with its unique ability to give local, microscopic information that directly relates to the one‐particle Green's function. Yet, STM on hexaborides is met with its own set of challenges. This article attempts to review the progress in STM investigations on hexaborides, with emphasis on SmB6 and its intriguing properties.

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“…In 2019, Bellucci et al tried to deposit LaB 6 thin films in vacuum using different techniques, including fs PLD [93]. The laser source was a Ti:sapphire laser (λ = 800 nm, τ = 100 fs, repetition rate = 200 Hz, E = 2.7 mJ).…”

Section: Lanthanum Boridementioning

confidence: 99%

Ultra-Short Pulsed Laser Deposition of Oxides, Borides and Carbides of Transition Elements

Bonis

Teghil

2020

Coatings

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Oxides, borides and carbides of the transition elements are materials of great interest from a technologic point of view. Many of these materials are used in the form of thin films, so several techniques are commonly used to deposit them. Among these techniques, Pulsed Laser Deposition (PLD) performed using ultra-short pulse lasers, mainly fs lasers, presents unique characteristics in respect to PLD performed using conventional short pulse lasers. Indeed, the films deposited using fs PLD are often nanostructured, and this technique often allows the target stoichiometry to be transferred to the films. In this work, we will review the use of ultra-short PLD in the production of films obtained from transition metal oxides, borides and carbides, evidencing the advantages offered by this technique, together with the problems arising with some of the studied systems. We conclude that even if ultra-short PLD is surely one of the most important and useful deposition techniques, it also presents limits that cannot be ignored.

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Lanthanum (oxy)boride thin films for thermionic emission applications

Cited by 17 publications

References 22 publications

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB$_6$

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB$_6$

An STM Perspective on Hexaborides: Surface States of the Kondo Insulator SmB₆

Ultra-Short Pulsed Laser Deposition of Oxides, Borides and Carbides of Transition Elements

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Lanthanum (oxy)boride thin films for thermionic emission applications

Cited by 17 publications

References 22 publications

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB$_6$

An STM perspective on hexaborides: Surface states of the Kondo insulator SmB$_6$

An STM Perspective on Hexaborides: Surface States of the Kondo Insulator SmB6

Ultra-Short Pulsed Laser Deposition of Oxides, Borides and Carbides of Transition Elements

Contact Info

Product

Resources

About

An STM Perspective on Hexaborides: Surface States of the Kondo Insulator SmB₆