Chirality Assisted Triplet Electron Pairing DOI Creative Commons
Jonas Fransson, Ron Naaman

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1629 - 1633

Published: Feb. 5, 2025

Redox processes that involve pairs of electrons are common in nature. Some these reactions oxygen molecules. The understanding the efficiency reduction reaction (ORR), for example, is a challenge since spin forbidden and requires transfer two electrons. Past experimental theoretical studies demonstrated by controlling transferred electrons, it possible to overcome barrier resulting from mismatch between reactants products. In other works, was suggested enhanced if each pair have phase relation, namely, they possess property triplet state. Since nature through chiral systems, we probed chirality affects formation paired with same spin, like model calculations demonstrate enhances probability electron pairing states, even at room temperature. This enhancement originates breaking degeneracy, enabled interaction spins vibrations.

Language: Английский

Chiral Phonons Enhance Ferromagnetism DOI Creative Commons
Jonas Fransson, Yael Kapon,

Lilach Brann

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2001 - 2007

Published: Feb. 18, 2025

Recent experiments suggest that the conditions for ferromagnetic order in magnetite can be modified by adsorption of chiral molecules. Especially, coercivity a metal was increased nearly 100% or 20 times earth magnetic flux density at room temperature. The was, moreover, demonstrated to increase linearly with temperature finite range around On basis these results, mechanism is proposed providing necessary enhancement anisotropy. It shown nuclear vibrations (phonons) coupled spin excitations (magnons) absorb thermal energy system, thereby diverting excess otherwise would excite magnons ferromagnet. This diversion not only restores but also enhances its stability increasing anisotropy magnon excitations. coupling between phonons enabled chirality due lack inversion symmetry.

Language: Английский

Citations

0
Chiral 2D flakes with single atoms inclusion for spin-controlled oxygen evolution DOI Creative Commons
Denis Zabelin,

Anastasiia Tulupova,

Peter Švec

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236839 - 236839

Published: March 24, 2025

Language: Английский

Citations

0
Chiral Induced Spin Polarized Electron Current: Origin of the Chiral Induced Spin Selectivity Effect DOI Creative Commons
Jonas Fransson

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 4346 - 4353

Published: April 24, 2025

The discovery of the chiral induced spin selectivity effect has provided a novel tool to study how active physical and chemical mechanisms may differ in enantiomers; however, origin itself is yet an open question. In this Letter, it theoretically shown that two aspects must be fulfilled for arise. First, chirality necessary condition breaking spin-degeneracy molecular structures do not comprise heavy elements. Second, dissipation indispensable molecule develop nonvanishing spin-polarization. These theoretical conclusions are illustrated terms few examples, showing necessity coordinated emergence effect.

Language: Английский

Citations

0
The role of electrochemistry in solving the mystery of the relationship between molecular structure and anaesthetic potency DOI
Gabriele Melegari, Anu Gupta, Camilla Ferrari

et al.

Current Opinion in Electrochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 101652 - 101652

Published: Jan. 1, 2025

Language: Английский

Citations

0
Chirality Assisted Triplet Electron Pairing DOI Creative Commons
Jonas Fransson, Ron Naaman

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1629 - 1633

Published: Feb. 5, 2025

Redox processes that involve pairs of electrons are common in nature. Some these reactions oxygen molecules. The understanding the efficiency reduction reaction (ORR), for example, is a challenge since spin forbidden and requires transfer two electrons. Past experimental theoretical studies demonstrated by controlling transferred electrons, it possible to overcome barrier resulting from mismatch between reactants products. In other works, was suggested enhanced if each pair have phase relation, namely, they possess property triplet state. Since nature through chiral systems, we probed chirality affects formation paired with same spin, like model calculations demonstrate enhances probability electron pairing states, even at room temperature. This enhancement originates breaking degeneracy, enabled interaction spins vibrations.

Language: Английский

Citations

0