Spin injection and spin-orbit coupling in low-dimensional semiconductor nanostructures

2014 ◽  
Author(s):  
Sebastian Heedt ◽  
Isabel Wehrmann ◽  
Thomas Gerster ◽  
Paul Wenk ◽  
Stefan Kettemann ◽  
...  
Keyword(s):  
Spin Injection ◽  
Semiconductor Nanostructures ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Low Dimensional

scholarly journals The Importance of Spin State in Chiral Supramolecular Electronics

2021 ◽  
Vol 9 ◽  
Author(s):  
Ana M. Garcia ◽  
Gabriel Martínez ◽  
Amparo Ruiz-Carretero
Keyword(s):  
Organic Electronics ◽  
Spin State ◽  
Organic Materials ◽  
Spin Injection ◽  
Inorganic Materials ◽  
Orbit Coupling ◽  
Light Illumination ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Chiral Molecules

The field of spintronics explores how magnetic fields can influence the properties of organic and inorganic materials by controlling their electron’s spins. In this sense, organic materials are very attractive since they have small spin-orbit coupling, allowing long-range spin-coherence over times and distances longer than in conventional metals or semiconductors. Usually, the small spin-orbit coupling means that organic materials cannot be used for spin injection, requiring ferromagnetic electrodes. However, chiral molecules have been demonstrated to behave as spin filters upon light illumination in the phenomenon described as chirality-induced spin selectivity (CISS) effect. This means that electrons of certain spin can go through chiral assemblies of molecules preferentially in one direction depending on their handedness. This is possible because the lack of inversion symmetry in chiral molecules couples with the electron’s spin and its linear momentum so the molecules transmit the one preferred spin. In this respect, chiral semiconductors have great potential in the field of organic electronics since when charge carriers are created, a preferred spin could be transmitted through a determined handedness structure. The exploration of the CISS effect in chiral supramolecular semiconductors could add greatly to the efforts made by the organic electronics community since charge recombination could be diminished and charge transport improved when the spins are preferentially guided in one specific direction. This review outlines the advances in supramolecular chiral semiconductors regarding their spin state and its influence on the final electronic properties.

scholarly journals Accessing new magnetic regimes by tuning the ligand spin-orbit coupling in van der Waals magnets

2020 ◽  
Vol 6 (30) ◽  
pp. eabb9379 ◽  
Author(s):  
Thomas A. Tartaglia ◽  
Joseph N. Tang ◽  
Jose L. Lado ◽  
Faranak Bahrami ◽  
Mykola Abramchuk ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Ground States ◽  
Magnetic Coupling ◽  
Interlayer Coupling ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
New Directions ◽  
Low Dimensional ◽  
Interlayer Magnetic Coupling

Van der Waals (VdW) materials have opened new directions in the study of low dimensional magnetism. A largely unexplored arena is the intrinsic tuning of VdW magnets toward new ground states. Chromium trihalides provided the first such example with a change of interlayer magnetic coupling emerging upon exfoliation. Here, we take a different approach to engineer previously unknown ground states, not by exfoliation, but by tuning the spin-orbit coupling (SOC) of the nonmagnetic ligand atoms (Cl, Br, I). We synthesize a three-halide series, CrCl3 − x − yBrxIy, and map their magnetic properties as a function of Cl, Br, and I content. The resulting triangular phase diagrams unveil a frustrated regime near CrCl3. First-principles calculations confirm that the frustration is driven by a competition between the chromium and halide SOCs. Furthermore, we reveal a field-induced change of interlayer coupling in the bulk of CrCl3 − x − yBrxIy crystals at the same field as in the exfoliation experiments.

Spin–orbit coupling in low-dimensional gold

2008 ◽  
Vol 2 (3) ◽  
pp. 117-119 ◽  
Author(s):  
E. Hüger ◽  
M. Zelený ◽  
T. Káňa ◽  
M. Šob
Keyword(s):  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Low Dimensional

scholarly journals Spin-orbit coupling induced splitting of Yu-Shiba-Rusinov states in antiferromagnetic dimers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Philip Beck ◽  
Lucas Schneider ◽  
Levente Rózsa ◽  
Krisztián Palotás ◽  
András Lászlóffy ◽  
...  
Keyword(s):  
Bound States ◽  
Theoretical Calculations ◽  
Building Blocks ◽  
Orbit Coupling ◽  
Topological Classification ◽  
Cooper Pairs ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Low Dimensional

AbstractMagnetic atoms coupled to the Cooper pairs of a superconductor induce Yu-Shiba-Rusinov states (in short Shiba states). In the presence of sufficiently strong spin-orbit coupling, the bands formed by hybridization of the Shiba states in ensembles of such atoms can support low-dimensional topological superconductivity with Majorana bound states localized on the ensembles’ edges. Yet, the role of spin-orbit coupling for the hybridization of Shiba states in dimers of magnetic atoms, the building blocks for such systems, is largely unexplored. Here, we reveal the evolution of hybridized multi-orbital Shiba states from a single Mn adatom to artificially constructed ferromagnetically and antiferromagnetically coupled Mn dimers placed on a Nb(110) surface. Upon dimer formation, the atomic Shiba orbitals split for both types of magnetic alignment. Our theoretical calculations attribute the unexpected splitting in antiferromagnetic dimers to spin-orbit coupling and broken inversion symmetry at the surface. Our observations point out the relevance of previously unconsidered factors on the formation of Shiba bands and their topological classification.

scholarly journals Theory of spin injection in two-dimensional metals with proximity-induced spin-orbit coupling

2019 ◽  
Vol 100 (24) ◽  
Author(s):  
Yu-Hsuan Lin ◽  
Chunli Huang ◽  
Manuel Offidani ◽  
Aires Ferreira ◽  
Miguel A. Cazalilla
Keyword(s):  
Spin Injection ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional

Spin Injection into a Superconductor with Strong Spin-Orbit Coupling

2014 ◽  
Vol 112 (3) ◽  
Author(s):  
T. Wakamura ◽  
N. Hasegawa ◽  
K. Ohnishi ◽  
Y. Niimi ◽  
YoshiChika Otani
Keyword(s):  
Spin Injection ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Strong Spin
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