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Triplet formation and its regulation have always been of central interest in understanding the photophysical behavior of living systems. In organic systems, excessive triplet formation poses significant challenges, as it can promote…

Biological Physics · Physics 2026-05-12 Parul Raghuvanshi , Vishvendra Singh Poonia

Birds have a remarkable ability to obtain navigational information from the Earth's magnetic field. The primary detection mechanism of this compass sense is uncertain but appears to involve the quantum spin dynamics of radical pairs formed…

Biological Physics · Physics 2017-09-18 Daniel R. Kattnig , P. J. Hore

Chiral induced spin selectivity (CISS) describes efficient spin filtering by chiral molecules. This phenomenon has led to nanoscale manipulation of quantum spins with promising applications to spintronics and quantum computing, since its…

Quantum Physics · Physics 2021-01-01 Xiaopeng Li , Jue Nan , Xiangcheng Pan

Cryptochrome flavoproteins are prime candidates for mediating magnetic sensing in migratory animals via the radical pair mechanism (RPM), a spin-dependent process initiated by photoinduced electron transfer. The canonical FAD-tryptophan…

Biomolecules · Quantitative Biology 2025-09-01 Zou Chengye , Liu Ya-jun , Wang Beibei

The interplay between chirality and magnetism has been a source of fascination among scientists for over a century. In recent years, chirality-induced spin selectivity (CISS) has attracted renewed interest. It has been observed that…

Mesoscale and Nanoscale Physics · Physics 2024-08-07 Mohammad Reza Safari , Frank Matthes , Claus M. Schneider , Karl-Heinz Ernst , Daniel E. Bürgler

Chiral molecular junctions offer a promising platform for realizing chiral-induced spin selectivity (CISS), where spin filtering occurs without external magnetic fields. Here, we investigate spin transport in such junctions by combining…

Mesoscale and Nanoscale Physics · Physics 2025-09-19 Yu Wang , Ruihao Bi , Wei Liu , Jiayue Han , Wenjie Dou

The emergence of biomolecular homochirality requires both an initial symmetry-breaking event and a mechanism to amplify and preserve a chiral imbalance. Magnetic minerals have been shown to function as chiral agents through the…

The role of chirality in determining the spin dynamics of photoinduced electron transfer in donor-acceptor molecules remains an open question. Although chirality-induced spin selectivity (CISS) has been demonstrated in molecules bound to…

Life is homochiral and homochirality is a fundamental feature of living systems on Earth. While the exact mechanism that led to homochirality is still not fully understood, any realistic scenario on the origins of life needs to address the…

Molecular chirality and electron spin are intricately intertwined via the fascinating phenomenon of chiral-induced spin selectivity (CISS), which has garnered considerable attention due to its extensive potential applications. A recent…

Chemical Physics · Physics 2025-10-17 Peng-Yi Liu , Tian-Yi Zhang , Ai-Min Guo , Yossi Paltiel , Qing-Feng Sun

The spin activity in macromolecules such as DNA and oligopeptides, in the context of the Chiral Induced Spin Selectivity (CISS) has been proposed to be due to the atomic Spin-Orbit Coupling (SOC) and the associated chiral symmetry of the…

Mesoscale and Nanoscale Physics · Physics 2021-10-22 Alexander López , Solmar Varela , Ernesto Medina

In connection to the chiral-induced spin-selectivity (CISS) effect, we theoretically analyze the electronic and spin states of edges of a finite $p$-orbital helical atomic chain with the intra-atomic spin-orbit interaction (SOI). This model…

Mesoscale and Nanoscale Physics · Physics 2023-12-25 Takemitsu Kato , Yasuhiro Utsumi , Ora Entin-Wohlman , Amnon Aharony

The Radical Pair Mechanism is a canonical model for the magnetosensitivity of chemical reaction processes. The key ingredient of this model is the hyperfine interaction that induces a coherent mixing of singlet and triplet electron spin…

Chemical Physics · Physics 2018-09-12 Robert H. Keens , Salil Bedkihal , Daniel R. Kattnig

Carbon nanotubes (CNTs) are promising materials exhibiting exceptional strength, electrical conductivity, and thermal properties, making them promising for various technologies. Besides achiral configurations with a zigzag or armchair edge,…

Mesoscale and Nanoscale Physics · Physics 2025-10-09 Börge Göbel , Ingrid Mertig , Samir Lounis

Since the chiral-induced spin selectivity (CISS) was first observed experimentally, its microscopic mechanism has been continuously explored by the scientific community. Among these investigations, the non-equilibrium effects and the…

Mesoscale and Nanoscale Physics · Physics 2023-09-12 Song Chen , Hua-Hua Fu

Chiral-induced spin selectivity (CISS) is a striking phenomenon in which spin-unpolarized electrons become spin-polarized after traversing a chiral medium. Theoretical studies have shown that spin-orbit coupling, geometric chirality, and…

Mesoscale and Nanoscale Physics · Physics 2026-03-24 Lizhou Liu , Peng-Yi Liu , Tian-Yi Zhang , Qing-Feng Sun

Understanding chiral induced spin-selectivity (CISS), resulting from charge transport through helical systems, has recently inspired many experimental and theoretical efforts, but is still object of intense debate. In order to assess the…

The origin and function of chirality in DNA, proteins, and other building blocks of life represent a central question in biology. Observations of spin polarization and magnetization associated with electron transport through chiral…

The spin chirality, created by magnetic atoms, has been comprehensively understood to generate and control the magneto-optical effects. In comparison, the role of the crystal chirality that relates to nonmagnetic atoms has received much…

Materials Science · Physics 2021-07-05 Xiaodong Zhou , Wanxiang Feng , Xiuxian Yang , Guang-Yu Guo , Yugui Yao

The chirality-induced spin selectivity (CISS), demonstrated in diverse chiral molecules by numerous experimental and theoretical groups, has been attracting extensive and ongoing interest in recent years. As the secondary structure of DNA,…

Mesoscale and Nanoscale Physics · Physics 2020-11-11 Pei-Jia Hu , Si-Xian Wang , Xiao-Hui Gao , Yan-Yang Zhang , Tie-Feng Fang , Ai-Min Guo , Qing-Feng Sun