Noncollinear electric dipoles in a polar, chiral phase of CsSnBr\(_3\) perovskite

Noncollinear electric dipoles in a polar, chiral phase of CsSnBr\(_3\) perovskite

Polar and chiral crystal symmetries confer a variety of potentially useful functionalities upon solids by coupling otherwise noninteracting mechanical, electronic, optical, and magnetic degrees of freedom. We describe two unstudied phases of the 3D perovskite, CsSnBr\(_3\), which emerge below 85 K d...

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Veröffentlicht in:arXiv.org 2024-04
Hauptverfasser: Fabini, Douglas H, Kedar Honasoge, Cohen, Adi, Sebastian, Bette, McCall, Kyle M, Stoumpos, Constantinos C, Klenner, Steffen, Zipkat, Mirjam, Le Phuong Hoang, Nuss, Jürgen, Kremer, Reinhard K, Kanatzidis, Mercouri G, Yaffe, Omer, Kaiser, Stefan, Lotsch, Bettina V
Format: Artikel
Sprache:eng
Schlagworte:
Broken symmetry
Electric dipoles
Electronic structure
Electrostriction
Ferroelectricity
Nuclear quadrupole resonance
Perovskites
Photoluminescence
Polarization
Quadrupoles
Second harmonic generation
Solid solutions
Symmetry
Synchrotron radiation
Thermal expansion
X ray powder diffraction
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Zusammenfassung:Polar and chiral crystal symmetries confer a variety of potentially useful functionalities upon solids by coupling otherwise noninteracting mechanical, electronic, optical, and magnetic degrees of freedom. We describe two unstudied phases of the 3D perovskite, CsSnBr\(_3\), which emerge below 85 K due to the formation of Sn(II) lone pairs and their interaction with extant octahedral tilts. Phase II (77 K
ISSN:2331-8422