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Spin-flop transition (SFT) consists in a jump-like reversal of antiferromagnetic magnetic moments into a non-collinear state when the magnetic field increases above the critical value. Potentially the SFT can be utilized in many…

We investigate the dynamics of Fe adatoms and dimers deposited on the Cu(111) metallic surface in the presence of spin-orbit coupling, within time-dependent density functional theory. The \textit{ab initio} results provide…

Mesoscale and Nanoscale Physics · Physics 2017-10-03 Filipe S. M. Guimarães , Manuel dos Santos Dias , Benedikt Schweflinghaus , Samir Lounis

We proposed a novel and simple multilayer structure to realize the deterministic switching of perpendicularly magnetized layers (Co in our work) by spin orbital torque from the spin Hall Effect in this paper. A pinned layer is introduced,…

Computational Physics · Physics 2017-05-08 Sumei Wang

There is a growing interest in utilizing the distinctive material properties of organic semiconductors for spintronic applications. Here, we explore injection of pure spin current from Permalloy into a small molecule system based on…

The subject of this study is spin transport through a molecular orbital connected to two leads, and coupled via exchange interaction with a precessing anisotropic molecular spin in a constant magnetic field. The inelastic spin-flip…

Mesoscale and Nanoscale Physics · Physics 2025-10-02 Milena Filipović

We describe an approach to electrically control the strong interaction between a single electron spin and the vibrational motion of a suspended carbon nanotube resonator. The strength of the deflection-induced spin-phonon coupling is…

Quantum Physics · Physics 2015-10-20 Fang-Yu Hong , Jing-Li Fu , Yan Wu , Zhi-Yan Zhu

Surface-bound porphyrins are promising candidates for molecular switches, electronics and spintronics. Here, we studied the structural and the electronic properties of Fe-tetra-pyridil-porphyrin adsorbed on Au(111) in the monolayer regime.…

Mesoscale and Nanoscale Physics · Physics 2020-12-22 Arnulf Stein , Daniela Rolf , Christian Lotze , Constantin Czekelius , Katharina J. Franke , Petra Tegeder

We have witnessed a wide range of theoretical as well as experimental investigations to envisage external stimuli induced changes in electronic, optical, and magnetic properties in the metal organic complexes, while hybrid perovskites have…

Materials Science · Physics 2022-11-04 Hrishit Banerjee , Jagjit Kaur , M. K. Nazeeruddin , Sudip Chakraborty

Magnetization reversal of a perpendicular ferromagnetic free layer by spin-orbit torque (SOT) is an attractive alternative to spin-transfer torque (STT) switching in magnetic random-access memory (MRAM) where the write process involves…

Mesoscale and Nanoscale Physics · Physics 2015-11-19 Yong-Chang Lau , Davide Betto , Karsten Rode , JMD Coey , Plamen Stamenov

Electromechanical coupling through piezoelectric polymer chains allows the emission of organic molecules in active nanowires to be tuned. This effect is evidenced by highly bendable arrays of counter-ion dye-doped nanowires made of a…

Recent results in electric-field control of magnetism have paved the way for the design of alternative magnetic and spintronic devices with enhanced functionalities and low power consumption. Among the diversity of reported magnetoelectric…

A systematic microscopic theory of magnetically induced ferroelectricity and lattice modulation is presented for all electron configurations of Mott-insulating transition-metal oxides. Various mechanisms of polarization are identified in…

Strongly Correlated Electrons · Physics 2009-11-13 Chenglong Jia , Shigeki Onoda , Naoto Nagaosa , Jung Hoon Han

Organic spintronic devices have been appealing because of the long spin life time of the charge carriers in the organic materials and their low cost, flexibility and chemical diversity. In previous studies, the control of resistance of…

The photoinduced switching of Fe(II)-based spin-crossover complexes from singlet to quintet takes place at ultrafast time scales. This a priori spin-forbidden transition triggered numerous time-resolved experiments of solvated samples to…

We calculate the rates of phonon-assisted hyperfine spin flips during electron and hole tunneling between quantum dots in a self-assembled quantum dot molecule. We show that the hyperfine process dominates over the spin-orbit-induced spin…

Mesoscale and Nanoscale Physics · Physics 2021-07-28 Paweł Karwat , Krzysztof Gawarecki , Paweł Machnikowski

We explore the magnetoresistance (MC) effect in an organic semiconductor device based on the magnetic field related bipolaron formation. By establishing a group of dynamic equations, we present the transition among spin-parallel,…

Materials Science · Physics 2015-06-04 W. Qin , S. Yin , K. Gao , S. J. Xie

Electron transfer (ET) in biological molecules such as peptides and proteins consists of electrons moving between well defined localized states (donors to acceptors) through a tunneling process. Here we present an analytical model for ET by…

Mesoscale and Nanoscale Physics · Physics 2020-07-01 Solmar Varela , Iskra Zambrano , Bertrand Berche , Vladimiro Mujica , Ernesto Medina

Magnetic anisotropy and magnetic exchange interactions are crucial parameters that characterize the hybrid metal-organic interface, key component of an organic spintronic device. We show that the incorporation of 4$f$ RE atoms to hybrid…

Inefficient screening of electric fields in nanoconductors makes electric manipulation of electronic transport in nanodevices possible. Accordingly, electrostatic (charge) gating is routinely used to affect and control the Coulomb…

Mesoscale and Nanoscale Physics · Physics 2015-07-22 R. I. Shekhter , M. Jonson

Non-collinear spin states with unique rotational sense, such as chiral spin-spirals, are recently heavily investigated because of advantages for future applications in spintronics and information technology and as potential hosts for…

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