Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session P17: Organic Interfaces from Single Molecules to Thin Films
2:30 PM–5:30 PM,
Wednesday, March 7, 2018
LACC
Room: 306A
Sponsoring
Unit:
DMP
Chair: Wai-Lun Chan, University of Kansas
Abstract ID: BAPS.2018.MAR.P17.13
Abstract: P17.00013 : Microscopic mechanism of the helix-to-layer transformation in elemental selenium*
5:18 PM–5:30 PM
Presenter:
Dan Liu
(Physics and Astronomy, Michigan State University)
Authors:
Dan Liu
(Physics and Astronomy, Michigan State University)
David Tomanek
(Physics and Astronomy, Michigan State University)
mechanism of a recently observed transition in elemental selenium
from the native helix structure to an atomically thin layer. We
have identified intermediate structures and their energies and
found that the transition may involve another, more stable helix
structure that had previously been unknown. The latter helix
structure is wider in diameter than the helices found in bulk
selenium and also is a natural precursor for the formation of a
2D-selenium monolayer. Owing to the high flexibility of the helix
geometry and the large number of degrees of freedom, the
activation barriers for the structural transitions between
metastable intermediate states are significantly lowered.
*NSF/AFOSR EFRI 2-DARE grant number EFMA-1433459
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.P17.13
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