The Longuet-Higgins phase and charge transport in molecular rings
نویسندگان
چکیده
منابع مشابه
Helmholtz’ and Longuet-Higgins’ Theories of Consonance and Harmony
The question of what constitutes musical experience and understanding is a very ancient one, like many important questions about the mind. The answers that have been offered over the years since the question was first posed have depended on the notion of mechanism that has been available as a metaphor for the mind. For Aristotle, and for the Pythagoreans, the explanation of the musical faculty ...
متن کاملQuantum Transport in Molecular Rings and Chains
We study charge transport driven by deformations in molecular rings and chains. Level crossings and the associated Longuet-Higgins phase play a central role in this theory. In molecular rings a vanishing cycle of shears pinching a gap closure leads, generically, to diverging charge transport around the ring. We call such behavior homeopathic. In an infinite chain such a cycle leads to integral ...
متن کاملProtein charge transport in gas phase
We propose a local heating method via molecular dynamic simulation to investigate the charge transport efficiency along a polypeptide chain in the gas phase. In the protein charge transfer process, the carbonyl groups next to a Cα-hinge collide with each other. Within a critical contact distance between O–O atoms, charge starts to transfer otherwise the charge being at rest. This is termed a bi...
متن کاملRole of Molecular Charge in Nucleocytoplasmic Transport
Transport of genetic materials and proteins between the nucleus and cytoplasm of eukaryotic cells is mediated by nuclear pore complexes (NPCs). A selective barrier formed by phenylalanine-glycine (FG) nucleoporins (Nups) with net positive charges in the NPC allows for passive diffusion of signal-independent small molecules and transport-receptor facilitated translocation of signal-dependent car...
متن کاملFoundations of Molecular Electronics — Charge Transport in Molecular Conduction Junctions
The most fundamental structure involved in molecular electronics is a molecular transport junction, consisting of one (ideally) or more molecules extending between two electrodes. These junctions combine the fundamental process of intramolecular electron transfer with the mixing of molecular and continuum levels at the electrodes and the nonequilibrium process of voltage-driven currents. Much o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemical Physics Letters
سال: 1998
ISSN: 0009-2614
DOI: 10.1016/s0009-2614(98)00838-0