English
Related papers

Related papers: Spin-Polarized Electron Transport through Nanomete…

200 papers

The tunnel magnetoresistance (TMR) in the magnetic tunnel junction (MTJ) with embedded nanoparticles (NPs) was calculated in range of the quantum-ballistic model. The simulation was performed for electron tunneling through the insulating…

Mesoscale and Nanoscale Physics · Physics 2016-03-25 Arthur Useinov , Lin-Xiu Ye , Niazbeck Useinov , Te-Ho Wu , Chih-Huang Lai

Using the spin-polarized tunneling model and taking into account the basic physics of ferromagnetic semiconductors, we study the temperature dependence of the tunneling magnetoresistance (TMR) in the diluted magnetic semiconductor (DMS)…

Strongly Correlated Electrons · Physics 2009-11-07 Pin Lyu , Kyungsun Moon

Using a multi-conduction-channel model, we redefined the micromechanism of spin Hall magnetoresistance (SMR). Four conduction channels are created by spin accumulation of nonpolarized electron flow at top, bottom, left and right interfaces…

Materials Science · Physics 2015-02-17 Yan-Qing Zhang , Hua-Rui Fu , Niu-Yi Sun , Wen-Ru Che , Ding Ding , Juan Qin , Cai-Yin You , Zhen-Gang Zhu , Rong Shan

Some antiferromagnets under a magnetic field develop magnetization perpendicular to the field as well as more conventional ones parallel to the field. So far, the transverse magnetization (TM) has been attributed to either spin canting…

Mesoscale and Nanoscale Physics · Physics 2024-03-21 Taekoo Oh , Sungjoon Park , Bohm-Jung Yang

Conventional and spin-related thermoelectric effects in transport through a magnetic tunnel junction with a large-spin impurity, such as a magnetic molecule or atom, embedded into the corresponding barrier are studied theoretically in the…

Mesoscale and Nanoscale Physics · Physics 2014-11-11 Maciej Misiorny , Józef Barnaś

Tunneling of electrons into a two-dimensional electron system is known to exhibit an anomaly at low bias, in which the tunneling conductance vanishes due to a many-body interaction effect. Recent experiments have measured this anomaly…

Strongly Correlated Electrons · Physics 2018-07-02 Debanjan Chowdhury , Brian Skinner , Patrick A. Lee

It has been observed that in bulk and polycrystalline thin films of collossal magnetoresistive (CMR) materials the magnetoresistance follows a different behaviour compared to single crystals or single crystalline films below the…

Materials Science · Physics 2009-10-31 P. Raychaudhuri , T. K. Nath , A. K. Nigam , R. Pinto

Generating and characterizing uniform and staggered spin polarization in antiferromagnets is one of the key challenges for antiferromagnetic spintronic technology. Here, we perform perturbative theory, group-theoretical symmetry analysis,…

Materials Science · Physics 2026-05-29 Q. Xue , J. Zhou

We construct a spin-drift-diffusion model to describe spin-polarized electron transport in zincblende semiconductors in the presence of magnetic fields, electric fields, and off-diagonal strain. We present predictions of the model for…

Materials Science · Physics 2009-11-11 M. Hruska , S. Kos , S. A. Crooker , A. Saxena , D. L. Smith

An electric current flowing in a ferromagnetic metal carries spin angular momentum, i.e. it is spin-polarized. Here, we measure the spin-wave Doppler shift induced by the transfer of angular momentum from the diffusive spin-polarized…

Electronic transport through a single-molecule magnet Mn$_{12}$ in a two-terminal set up is calculated using the non-equilibrium Green's function method in conjunction with density-functional theory. A single-molecule magnet Mn$_{12}$ is…

Materials Science · Physics 2010-01-28 Salvador Barraza-Lopez , Kyungwha Park , Víctor García-Suárez , Jaime Ferrer

The tunnel current and magnetoresistance (TMR) are investigated in magnetic tunnel junctions consisting of a spin-filter tunnel barrier, sandwiched between a ferromagnetic (FM) electrode and a nonmagnetic (NM) electrode. The investigations…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Alireza Saffarzadeh

The magnetic state of atomically thin semiconducting layered antiferromagnets such as CrI$_3$ and CrCl$_3$ can be probed by forming tunnel barriers and measuring their resistance as a function of magnetic field ($H$) and temperature ($T$).…

The magnitude of the anisotropic magnetoresistance (AMR) and the longitudinal resistance in compressively strained (Ga0.95, Mn0.05)As epilayers were measured for the first time down to temperatures as low as 30 mK. Below temperatures of 3K…

Other Condensed Matter · Physics 2009-11-13 J. Honolka , S. Masmanidis , H. X. Tang , D. D. Awschalom , M. L. Roukes

We report a large tunneling anisotropic magnetoresistance (TAMR) in a thin (Ga,Mn)As epilayer with lateral nanoconstrictions. The observation establishes the generic nature of this effect, which originates from the spin-orbit coupling in a…

Basic questions on the nature of spin polarization in two terminal systems and the way in which decoherence breaks Time-Reversal Symmetry (TRS) are analyzed. We exactly solve several one-dimensional models of tunneling electrons and show…

Mesoscale and Nanoscale Physics · Physics 2023-04-04 S. Varela , M. Peralta , V. Mujica , B. Berche , E. Medina

The temperature and voltage dependence of spin transport is theoretically investigated in a new type of magnetic tunnel junction, which consists of two ferromagnetic outer electrodes separated by a ferromagnetic barrier and a nonmagnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Ali A. Shokri , Alireza Saffarzadeh

We present a theoretical study on the spin-dependent transport through a spin valve consisting of graphene sandwiched between two magnetic leads with an arbitrary orientation of the lead magnetization. No gate voltage is applied. Using…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Kai-He Ding , Zhen-Gang Zhu , Jamal Berakdar

We theoretically investigate the angular and spin dependent transport in normal-metal/helical-multiferroic/ferromagnetic heterojunctions. We find a tunneling anisotropic magnetoresistance (TAMR) effect due to the spiral magnetic order in…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Chenglong Jia , Jamal Berakdar

Polyalanine molecules (PA) with an {\alpha}-helix conformation gathered recently a lot of interest as the propagation of electrons through the chiral backbone structure comes along with spin polarization of the transmitted electrons. By…

Mesoscale and Nanoscale Physics · Physics 2022-02-16 Nguyen T. N. Ha , L. Rasabathina , O. Hellwig , A. Sharma , G. Salvan , S. Yochelis , Y. Paltiel , L. T. Baczewski , C. Tegenkamp