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Transition-metal ions with $5d^2$ electronic configuration in a cubic crystal field are prone to have a vanishing dipolar magnetic moment but finite higher-order multipolar moments, and they are expected to exhibit exotic physical…

Strongly Correlated Electrons · Physics 2025-07-16 J. Okamoto , G. Shibata , Yu. S. Posonov , H. Hayashi , K. Yamaura , H. Y. Huang , A. Singh , C. T. Chen , A. Tanaka , S. V. Streltsov , D. J. Huang , A. Fujimori

Nonlinear spin systems exhibit rich and exotic dynamical phenomena, offering promising applications ranging from spin masers and time crystals to precision measurement. Recent theoretical work [T. Wang et al., Commun. Phys. 8, 41 (2025)]…

Quantum Physics · Physics 2025-10-16 Xiaofan Wang , Haitao Lu , Hengyan Wang , Zhihuang Luo , Wenqiang Zheng

We study boron, carbon, nitrogen and oxygen isotopes with a newly constructed shell-model Hamiltonian developed from monopole-based-universal interaction ($V_{MU}$). The present Hamiltonian can reproduce well the ground-state energies,…

Nuclear Theory · Physics 2012-09-26 Cenxi Yuan , Toshio Suzuki , Takaharu Otsuka , Furong Xu , Naofumi Tsunoda

Akali superoxides AO2 (A=Na, K, Rb, Cs), due to an open p shell of the oxygen ion O2^- with degenerate pi orbitals, have spin and orbital degrees of freedom. The complex magnetic, orbital, and structural phase transitions observed…

Strongly Correlated Electrons · Physics 2024-06-11 Kohei Shibata , Makoto Naka , Harald O. Jeschke , Junya Otsuki

We suggest the application of nitronylnitroxide substituted with methyl group and 2,2,6,6-tetramethylpiperidin organic radicals as 1/2-spin qubits for self-assembled monolayer quantum devices. We show that the oscillating cantilever driven…

Functionalized polcyclic aromatic hydrocarbons (PAHs) are an interesting class of molecules in which the electronic state of the graphene-like hydrocarbon part is tuned by the functional group. Searching for new types of donor and acceptor…

Polycyclic aromatic hydrocarbons (PAHs) are key dust components in galaxies and play a fundamental role in the physics of the interstellar medium (ISM), yet their response to AGN feedback remains debated. We present a spatially resolved…

We present a comprehensive study of the low-field magnetoresistance in carbon doped p-type GaAs/AlGaAs heterostructures aiming at the investigation of spin-orbit interaction effects. The following signatures of exceptionally strong…

Mesoscale and Nanoscale Physics · Physics 2008-03-30 Boris Grbic , Renaud Leturcq , Thomas Ihn , Klaus Ensslin , Dirk Reuter , Andreas D. Wieck

Spin-orbit coupling in solids describes an interaction between an electron's spin, an internal quantum-mechanical degree of freedom, with its linear momentum, an external property. Spin-orbit interaction, due to its relativistic nature, is…

Mesoscale and Nanoscale Physics · Physics 2014-08-07 J. Shabani , Younghyun Kim , A. P. McFadden , R. M. Lutchyn , C. Nayak , C. J. palmstrøm

We study two anisotropically interacting spins coupled to optical phonons; we restrict our analysis to the regime of strong coupling to the environment, to the antiadiabatic region, and to the subspace with zero value for $S^z_T$ (the…

Strongly Correlated Electrons · Physics 2015-06-17 Amit Dey , Sudhakar Yarlagadda

We study harmonically trapped one-dimensional atoms subjected to an equal combination of Rashba and Dresselhaus spin-orbit coupling induced by Raman transition. We first examine the wave function and the degeneracy of the single-particle…

Quantum Gases · Physics 2016-09-27 Chuanzhou Zhu , Lin Dong , Han Pu

We develop a rigorous quantum mechanical theory for collisions of polyatomic molecular radicals with S-state atoms in the presence of an external magnetic field. The theory is based on a fully uncoupled space-fixed basis set representation…

Chemical Physics · Physics 2012-09-17 T. V. Tscherbul , T. A. Grinev , H. -G. Yu , A. Dalgarno , Jacek Klos , Lifang Ma , Millard H. Alexander

The chiral-induced spin selectivity (CISS) effect describes an observed correlation between the orientation of an electron spin transported or transferred through a molecule and that molecule's chirality. Suitable molecules are usually…

Tunable magnetic interactions in high-mobility nonmagnetic semiconductor heterostructures are centrally important to spin-based quantum technologies. Conventionally, this requires incorporation of "magnetic impurities" within the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Christoph Siegert , Arindam Ghosh , Michael Pepper , Ian Farrer , David A. Ritchie

Strong electron correlation effects in the photophysics of quasi-one-dimensional $\pi$-conjugated organic systems such as polyenes, polyacetylenes, polydiacetylenes, etc., have been extensively studied. Far less is known on correlation…

Strongly Correlated Electrons · Physics 2014-02-18 K. Aryanpour , A. Roberts , A. Sandhu , R. Rathore , A. Shukla , S. Mazumdar

Stable organic radicals serve as model systems for investigating metal-free magnetic phenomena at (sub)nanometer length scales. We have investigated at the single-molecule level the stable $\pi$-radical 2,2-diphenyl-1-picrylhydrazyl (DPPH)…

Instrumentation and Detectors · Physics 2021-01-13 Radovan Vranik , Vitalii Stetsovych , Simon Feigl , Stefan Müllegger

In recent years Polycyclic Aromatic Hydrocarbons (PAHs) have been studied for their electronic properties as they are viewed as nanodots of graphene. They have also been of interest as functional molecules for applications such as light…

Strongly Correlated Electrons · Physics 2019-09-11 Geetanjali Giri , Anusooya Y. Pati , S. Ramasesha

It is shown that in organic semiconductors where organic magnetoresistance (OMAR) is observed, the exchange interaction between electrons and holes localized at different molecules leads to dynamic spin polarization in the direction of the…

Disordered Systems and Neural Networks · Physics 2022-04-06 A. V. Shumilin

Nuclear Magnetic Resonance (NMR) is one of the most powerful experimental techniques to characterize the structure of molecules and confined liquids. Nevertheless, the complexity of the systems under investigation usually requires…

The quantum mechanical screening of a spin via conduction electrons depends sensitively on the environment seen by the magnetic impurity. A high degree of responsiveness can be obtained with metal complexes, as the embedding of a metal ion…

Strongly Correlated Electrons · Physics 2018-11-29 Jens Kügel , Michael Karolak , Andreas Krönlein , David Serrate , Matthias Bode , Giorgio Sangiovanni