Results 21 to 30 of about 6,215 (212)

Magnetic excitations in an ionic spin-chain system with a nonmagnetic ferroelectric instability

Physical Review Research, 2020
Cross-correlation between magnetism and dielectric is expected to offer distinct emergent phenomena. Here, magnetic excitations in the organic donor-acceptor spin-chain system, tetrathiafulvalene-bromanil (TTF-BA), with a ferroelectric ground state is ...
K. Sunami, Y. Sakai, R. Takehara, H. Adachi, K. Miyagawa, S. Horiuchi, K. Kanoda   +6 more
doaj   +1 more source

Field-induced phase transitions of tetramer-singlet states in synthetic SU(4) magnets

AIP Advances, 2021
Phase transitions of quantum dimer magnets can be explained in terms of Bose-Einstein condensation of magnons. Here we consider a natural extension of the dimer magnets to SU(4)-symmetric tetramer systems, which could be created with four nuclear-spin ...
Y. Miyazaki, D. Yamamoto, G. Marmorini, N. Furukawa   +3 more
doaj   +1 more source

Beyond theT1Limit: Singlet Nuclear Spin States in Low Magnetic Fields [PDF]

Physical Review Letters, 2004
Low-field nuclear spin singlet states may be used to store nuclear spin order in a room temperature liquid for a time much longer than the spin-lattice relaxation time constant T1. The low-field nuclear spin singlets are unaffected by intramolecular dipole-dipole relaxation, which is generally the predominant relaxation mechanism.
Carravetta, M., Johannessen, O.G., Levitt, M.H.   +2 more
openaire   +4 more sources

Purification of an unpolarized spin ensemble into entangled singlet pairs

Scientific Reports, 2017
Dynamical polarization of nuclear spin ensembles is of central importance for magnetic resonance studies, precision sensing and for applications in quantum information theory.
Johannes N. Greiner, Durga Bhaktavatsala Rao Dasari, Jörg Wrachtrup   +2 more
doaj   +1 more source

Leading superconducting instabilities in three-dimensional models for Sr_{2}RuO_{4}

Physical Review Research, 2022
The unconventional superconductor Sr_{2}RuO_{4} has been the subject of enormous interest over more than two decades, but until now the form of its order parameter has not been explicitly determined. Since groundbreaking NMR experiments revealed recently
Astrid T. Rømer, T. A. Maier, Andreas Kreisel, P. J. Hirschfeld, Brian M. Andersen   +4 more
doaj   +1 more source

Singlet Oxygen Metabolism: From Genesis to Signaling

Frontiers in Plant Science, 2020
Singlet oxygen (1O2) is an excited state of molecular oxygen with an electron spin shift in the molecular orbitals, which is extremely unstable and highly reactive. In plants, 1O2 is primarily generated as a byproduct of photosynthesis in the photosystem
Vivek Dogra, Chanhong Kim
doaj   +1 more source

Nuclear spin singlet states as magnetic on/off probes in self-assembling systems

Physical Chemistry Chemical Physics, 2018
Nuclear singlet states in thermo-responsive peptides are introduced as magnetic on/off switches.
Mamone S., Gloggler S.
openaire   +4 more sources

Preparation Efficiency of Singlet States in Multi-spin Systems with Different Coupling Configurations

Chinese Journal of Magnetic Resonance
Nuclear spin singlet is a special quantum state that lasts longer than T1 and can be used to study slow diffusion and motion between molecules. The preparation of singlet states is the key to their successful application.
WANG Ziwen, XIN Jiaxiang, WEI Daxiu, YAO Yefeng   +3 more
doaj   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source