Results 61 to 70 of about 290,871 (296)

Triplet absorption in carbon nanotubes: a TD-DFT study

, 2007
We predict properties of triplet excited states in single-walled carbon nanotubes (CNTs) using a time-dependent density-functional theory (TD-DFT). We show that the lowest triplet state energy in CNTs to be about 0.2-0.3 eV lower than the lowest singlet ...
Tretiak, Sergei
core   +1 more source

Even-parity spin-triplet pairing for orbitally degenerate correlated electrons by purely repulsive interactions [PDF]

, 2013
We demonstrate the stability of a spin-triplet paired s-wave (with an admixture of extended s-wave) state for the case of purely repulsive interactions in a degenerate two-band Hubbard model.
Bünemann, Jörg, Spałek, Jozef, Zegrodnik, Michał   +2 more
core   +2 more sources

Enhanced Nitric Oxide Electroreduction to Ammonia via Modulating Spin‐Polarization of Fe Single‐Atom Catalysts

Advanced Functional Materials, EarlyView.
A strategic spin‐polarization suppression in Fe single‐atom catalysts is proposed to enhance electrocatalytic reduction of NO to NH3. Employing a top‐down electrospinning strategy, self‐supported FeSAC with Fe‐N3S1 coordination structure and spin‐state transition is engineered from high‐spin to low‐spin.
Jialing Song, Ziqi Wei, Lupeng Han, Zhenlin Wang, Chenghao Fan, Donglin Han, Chunwei Dong, Haiyan Duan, Xiyang Wang, Sam Fong Yau Li, Eslam Hamed, Ming Xie, Emiliano Cortés, Dengsong Zhang   +13 more
wiley   +1 more source

Electron spin polarization in the triplet state of methoxy-substituted phosphorus(V) tetraphenyl porphyrins

Journal of Magnetic Resonance Open
Photoexcited triplet states of porphyrins are of great relevance in various applications due to their high yield, long lifetime, and strong electron spin polarization.
D. Panariti, B.J. Bayard, A. Barbon, Y.E. Kandrashkin, P.K. Poddutoori, A. van der Est, M. Di Valentin   +6 more
doaj   +1 more source

Quantum Monte Carlo study of the pairing symmetry competition in the Hubbard model

, 2003
To shed light into the pairing mechanism of possible spin-triplet superconductors (TMTSF)$_2$X and Sr$_2$RuO$_4$, we study the competition among various spin singlet and triplet pairing channels in the Hubbard model by calculating the pairing interaction
G. Sugiyama, H. Mukuda, H. Shimahara, J. Solyom, Kazuhiko Kuroki, M. Imada, M. Sato, M. Suzuki, R. Arita, Ryotaro Arita, S. Sorella, T. Kimura, T. M. Rice, T. Nomura, T. Nomura, Takashi Kimura, V. J. Emery, Y. Fuseya, Y. Hasegawa, Y. Maeno, Yukio Tanaka   +20 more
core   +1 more source

Engineering a Sonotherapeutic RBC Membrane‐Derived Nanoparticle Platform for the Treatment of Liver Cancer

Advanced Functional Materials, EarlyView.
Herein, an RBC membrane‐derived nanoparticle (CMN‐ICG) is engineered to efficiently deliver a sonosensitizing agent, indocyanine green (ICG), for sonotherapy of hepatocellular carcinoma (HCC). CMN‐ICG exhibits excellent cytocompatibility, significantly enhances hepatocyte uptake, and produces excessive reactive oxygen species (ROS) upon ultrasound ...
Alap Ali Zahid, Aishik Chakraborty, Wei Luo, Juhi Bora, John Joseph Kelly, John Andrew Ronald, Arghya Paul   +6 more
wiley   +1 more source

Dissociation of singlet excitons dominates photocurrent improvement in high-efficiency non-fullerene organic solar cells

Nano Research Energy
In organic solar cells, the singlet and triplet excitons dissociate into free charge carriers with different mechanisms due to their opposite spin state. Therefore, the ratio of the singlet and triplet excitons directly affects the photocurrent.
Qicong Li, Shizhong Yue, Zhitao Huang, Chao Li, Jiaqian Sun, Keqian Dong, Zhijie Wang, Kong Liu, Shengchun Qu, Yong Lei   +9 more
doaj   +1 more source

Probing the Wave Function and Dynamics of the Quintet Multiexciton State with Coherent Control in a Singlet Fission Material

Physical Review X, 2020
High-spin states play a key role in chemical reactions found in nature. In artificial molecular systems, singlet fission produces a correlated triplet-pair state, a spin-bearing excited state that can be harnessed for more efficient solar-energy ...
S. L. Bayliss, L. R. Weiss, F. Kraffert, D. B. Granger, J. E. Anthony, J. Behrends, R. Bittl   +6 more
doaj   +1 more source

Magnetic field dependence of the energy of negatively charged excitons in semiconductor quantum wells

, 2000
A variational calculation of the spin-singlet and spin-triplet state of a negatively charged exciton (trion) confined to a single quantum well and in the presence of a perpendicular magnetic field is presented.
A. B. Dzyubenko, A. B. Dzyubenko, A. J. Shields, A. J. Shields, A. J. Shields, A. J. Shields, A. Wojs, B. E. Cole, B. Stébé, B. Stébé, B. Stébé, C. Riva, C. Riva, C. Riva, C. Riva, D. M. Whittaker, F. M. Muntenau, F. M. Peeters, G. Finkelstein, G. Finkelstein, G. Goldoni, G. Munschy, I. K. Marmorkos, K. Kheng, K. Kheng, K. Varga, M. A. Lampert, M. Hayne, M. J. Snelling, M. J. Snelling, S. Glasberg, T. Vanhoucke, V. Huard, Y. Kim, Y. Suzuki   +34 more
core   +1 more source

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier, James H. Edgar, Bruno Lopez‐Rodriguez, Viktor Ivády, Isaac J. Luxmoore   +6 more
wiley   +1 more source