Ray, Soumya J. ; Alff, Lambert (2017)
Superconductivity and Dirac fermions in 112-phase pnictides.
In: physica status solidi (b), 254 (1)
doi: 10.1002/pssb.201600163
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
This article reviews the current research on the 112-phase of pnictides. The 112-phase has gained augmented attention due to the recent discovery of high-temperature superconductivity in math formula with a maximum critical temperature math formula upon Sb substitution. The structural, magnetic, and electronic properties of math formula bear some similarities with other superconducting pnictide phases, however, the different valence states of the pnictogen and the presence of a metallic spacer layer are unique features of the 112-system. Low-temperature superconductivity which coexists with antiferromagnetic order was observed in transition metal (Ni, Pd) deficient 112-compounds like math formula, math formula, math formula, math formula. Besides superconductivity, the presence of naturally occurring anisotropic Dirac Fermionic states were observed in the layered 112-compounds SrMnBi2, CaMnBi2, LaAgBi2 which are of significant interest for future nanoelectronics as an alternative to graphene. In these compounds, the linear energy dispersion resulted in a high magnetoresistance that stayed unsaturated even at the highest applied magnetic fields. Here, we describe various 112-type materials systems combining experimental results and theoretical predictions to stimulate further research on this less well-known member of the pnictide family.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Ray, Soumya J. ; Alff, Lambert |
| Art des Eintrags: | Bibliographie |
| Titel: | Superconductivity and Dirac fermions in 112-phase pnictides |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2017 |
| Verlag: | WILEY-VCH, Weinheim |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | physica status solidi (b) |
| Jahrgang/Volume einer Zeitschrift: | 254 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1002/pssb.201600163 |
| Kurzbeschreibung (Abstract): | This article reviews the current research on the 112-phase of pnictides. The 112-phase has gained augmented attention due to the recent discovery of high-temperature superconductivity in math formula with a maximum critical temperature math formula upon Sb substitution. The structural, magnetic, and electronic properties of math formula bear some similarities with other superconducting pnictide phases, however, the different valence states of the pnictogen and the presence of a metallic spacer layer are unique features of the 112-system. Low-temperature superconductivity which coexists with antiferromagnetic order was observed in transition metal (Ni, Pd) deficient 112-compounds like math formula, math formula, math formula, math formula. Besides superconductivity, the presence of naturally occurring anisotropic Dirac Fermionic states were observed in the layered 112-compounds SrMnBi2, CaMnBi2, LaAgBi2 which are of significant interest for future nanoelectronics as an alternative to graphene. In these compounds, the linear energy dispersion resulted in a high magnetoresistance that stayed unsaturated even at the highest applied magnetic fields. Here, we describe various 112-type materials systems combining experimental results and theoretical predictions to stimulate further research on this less well-known member of the pnictide family. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 18 Mai 2017 08:26 |
| Letzte Änderung: | 18 Mai 2017 08:26 |
| PPN: | |
| Sponsoren: | This work was supported by the Deutsche Forschungsgemeinschaft (DFG) through Grant No. SPP 1458 (LA 560/10-2). |
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