The proposed Mini-colloquium will focus on transport of electronic degrees of freedom beyond charge, including spin and pseudospin, in quantum wires and low-dimensional structures where the geometric shape can play a fundamental role in dynamics and interferometry. This includes nanostructured circuits and devices based on semiconducting, superconducting, magnetic and topological materials, together with buckled graphene and other low-dimensional materials. Relevant topical areas: - Spin-orbitronics. - Topological spintronics. - Aharonov-Bohm/Casher/Anandan phases. - Berry curvature, pseudomagnetic fields and geometric phases. - Three-dimensional nanomagnetism - Nanostructures, devices and applications. a) |
b) |
Figure 1: (a) Classical shape effect in carbon nanoscrolls with open geometries, a purely transversal magnetic field yields a strongly directional-dependent magnetoresistance [1].
(b) Confinement-induced magnetic states in nanotubes with varying Dzyaloshinskii-Moriya interaction and varying curvature radius [2].
[1] Chang, C.-H. & Ortix, C. Theoretical prediction of a giant anisotropic magnetoresistance in carbon nanoscrolls. Nano Letters 17, 3076–3080 (2017).
[2] Yershov, K. V., Kravchuk, V. P., Sheka, D. D. & Rossler, U. K. Curvature effects on phase transitions in chiral magnets. SciPost Phys. 9, 43 (2020).
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