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PRODID:-//University of Liverpool Computer Science Seminar System//v2//EN
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DTSTAMP:20260408T201931Z
UID:Seminar-MIF-1470@lxserverA.csc.liv.ac.uk.csc.liv.ac.uk
ORGANIZER:CN=Othon Michail:MAILTO:Othon.Michail@liverpool.ac.uk
DTSTART:20251107T150000
DTEND:20251107T160000
SUMMARY:MIF Series
DESCRIPTION:Shannon Bernier: A Crystallographic Metric for Continuous Quantification of Unit Cell Deformation.\n\nDescribing the deviation of a real structure from a hypothetical higher-symmetry ideal can be a powerful tool to understand and interpret phase transitions. Here we introduce a simple yet effective metric that quantifies the degree of unit cell distortion relative to a cube, called the cubic deviation metric. This enables continuous comparisons between unit cells of different geometries. We demonstrate the potential of this tool with four separate case study applications to real material systems: 1) discontinuous structural phase transitions in pseudobrookites; 2) homological structure classification; 3) structure-correlated piezoelectricity in hexagonal materials; and 4) superconducting materials design in the cuprate family. Although this metric does not replace detailed structural or group theory analysis, it enables comparison across different compositional and structural compound variants, even in the presence of disorder or absence of group-subgroup correlation.\n\nhttps://www.csc.liv.ac.uk/research/seminars/abstract.php?id=1470
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