- Spin-polarized transport and Andreev reflection in... - NASA/ADS.
- Crystals | Free Full-Text | Microstructure and Anisotropic Order.
- Search results for: J. Spalek.
- Homogenization theory and impure superconductors.
- Magnetoanisotropic Andreev Reflection in Ferromagnet-Superconductor.
- Nonlocal transistor based on pure crossed Andreev reflection in a EuO.
- Investigations of Crossed Andreev Reflection in Hybrid Superconductor.
- Local characterization of ferromagnetic properties in ferromagnet.
- Physics:Andreev reflection - HandWiki.
- 中国科学技术大学 chenxianhui--Home--Publications.
- Equal-Spin Andreev Reflection on Junctions of Spin... - Europe PMC.
- What can Andreev bound states tell us about superconductors.
- Andreev reflection in ferromagnet/superconductor/ferromagnet.
Spin-polarized transport and Andreev reflection in... - NASA/ADS.
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Crystals | Free Full-Text | Microstructure and Anisotropic Order.
The recent development of superconducting spintronics has revealed the spin-triplet superconducting proximity effect from a spin-singlet superconductor into a spin-polarized normal metal. In addition recently superconducting junctions using semiconductors are in demand for highly controlled experiments to engineer topological superconductivity. Here we report experimental observation of. We show that spin-polarized electron transmission across semiconductor/superconductor (Sm/S) hybrid structures depends sensitively on the degree of spin polarization as well as the strengths of potential and spin-flip scattering at the interface.
Search results for: J. Spalek.
Less than twenty years ago, De Jong and Beenakker proposed the possibility to measure P by means of Point Contact Andreev Reflection (PCAR) spectroscopy exploiting the Andreev reflection (AR) process at the metal/superconductor interface for which an incoming electron with energy less than the superconducting energy gap is retroreflected in. A Biblioteca Virtual em Saúde é uma colecao de fontes de informacao científica e técnica em saúde organizada e armazenada em formato eletrônico nos países da Região Latino-Americana e do Caribe, acessíveis de forma universal na Internet de modo compatível com as bases internacionais.
Homogenization theory and impure superconductors.
Here we study spin polarization of the vortex core states and spin selective Andreev reflection at the vortex center of the SLTD model. In the topological phase, the differential conductance at the vortex center contributed from the Andreev reflection, is spin selective and has a quantized value (d I / d V) A t o p o = 2 e 2 / h at zero bias. To directly measure the spin polarization of the epitaxial Eu 1−y La y O 1−x films, we have used the Andreev reflection technique 37,38,39, which was successfully used by others to establish.
Magnetoanisotropic Andreev Reflection in Ferromagnet-Superconductor.
If the ferromagnet is highly spin polarized—in the half-metal limit—the magnetoanisotropic Andreev reflection depends universally on the spin-orbit fields only. Our results show that Andreev reflection spectroscopy can be used for sensitive probing of interfacial spin-orbit fields in a FS junction. Received 27 February 2015.
Nonlocal transistor based on pure crossed Andreev reflection in a EuO.
More recently, interest has arisen in structures in which the superconductor is in contact with a ferromagnet (F). 1 For conventional Andreev reflection into a s-wave superconductor, the two electrons that combine must have opposite spin orientations. In an itinerant ferromagnet in which the conduction electron cloud is spin polarized, not all. Superconductor (N/TS) junction, electrons with opposite spin polarization −n⃗ are completely decoupled from the MF and they cannot participate in Andreev reflections [Fig. 1(b)]. In other words, the MF selects electrons with certain spin polarization n⃗ to undergo equal-spin Andreev reflections. Therefore, we refer to this new phenomenon as.
Investigations of Crossed Andreev Reflection in Hybrid Superconductor.
Andreev reflection (AR), named after the Russian physicist Alexander F. Andreev, is a type of particle scattering which occurs at interfaces between a superconductor (S) and a normal state material (N). It is a charge-transfer process by which normal current in N is converted to supercurrent in S. Each Andreev reflection transfers a charge 2e across the interface, avoiding the forbidden single. Point contact Andreev reflection as a probe to study superconductors and ferromagnets Introduction to Point contact Andreev Reflection (PCAR)... for finite spin polarisation Will undego Andreev reflection Evanescent wave G=dI/dV-10 -5 0 5 10 0.0 0.5 1.0 1.5 2.0 T=4.2K, P t =0.4 T=4.2K, P t =1 G (V) / G n.
Local characterization of ferromagnetic properties in ferromagnet.
The physics and operating principles of hybrid superconductor-semiconductor devices rest ultimately on the magnetic properties of their elementary subgap excitations, usually called Andreev levels. Here we report a direct measurement of the Zeeman effect on the Andreev levels of a semiconductor quantum dot with large electron g-factor, strongly coupled to a conventional superconductor with a. Pure crossed Andreev reflection appears for all bias voltages in the superconducting energy gap, which is independent of the configuration of the magnetizations in the two leads. The spin of the crossed Andreev reflected hole could be parallel to the spin of the incident electron, which is brought by the spin-triplet pairing correlation. The.
Physics:Andreev reflection - HandWiki.
Resonant Andreev reflection in a FIDI'D' system where F is spin-polarized and DI'D' is a D-wave superconductor containing a grain boundary. Master's thesis, Texas A&M University. Available electronically from / / /1969.1 /ETD-TAMU-2000-THESIS-W265. Andreev Reflection in Ferromagnet-Superconductor Junctions by M. J. M. de Jong, C. W. J. Beenakker published in Physical Review Letters... Spin Polarized Conductance in Ferromagnet / Insulator / Conventional Superconductor Junctions... Astronomy Physics. 2012 English. Andreev Reflection in Ans-Type Superconductor Proximized 3D Topological. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44.
中国科学技术大学 chenxianhui--Home--Publications.
A spin-up electron undergoes Andreev reflection over the length scale of the coherence length ξ inside the superconductor (1), and is reflected as a hole in the spin-down band. The hole is reflected back into the superconductor from the spin-active interface (2), where it picks up a phase shift θ s /2. At a normal metal/superconductor interface Andreev reflection occurs, which can be utilized to measure spin polarization of the normal metal and also the superconducting gap of the superconductor. An s-wave superconductor has an isotropic gap and for an unpolarized current the Andreev reflection spectrum within the gap is twice that of outside the gap. A fully spin polarized current suppresses.
Equal-Spin Andreev Reflection on Junctions of Spin... - Europe PMC.
A junction of superconductor and normal metal is a platform to observe superconducting proximity effect, in which the superconducting property penetrates to the normal metal. In a microscopic description of the proximity effect, an electron in the normal metal enters the spin-singlet superconductor, forming a Cooper pair with another electron. There is increasing current interest in the spin-polarized transport in electronic materials and the possibility of using spin degrees of freedom in nanoelectronic devices. Many of the recent advances have focused on studying semiconductor and hybrid semiconductor structures as the likely candidates for novel spintronic devices. In hybrid semiconductor structures the presence of magnetically.
What can Andreev bound states tell us about superconductors.
CWRU Coffee Voting System. Showing votes from 2022-07-22 12:30 to 2022-07-26 11:30 | Next meeting is Tuesday Jul 26th, 10:30 am. Andreev reflection spectroscopy of ferromagnet-superconductor (FS) junctions is an important probe of spin polarization. We theoretically investigate spin-polarized transport in FS junctions in the presence of Rashba and Dresselhaus interfacial spin-orbit fields and show that Andreev reflection can be controlled by changing the magnetization orientation. We predict a giant in- and out-of-plane.
Andreev reflection in ferromagnet/superconductor/ferromagnet.
Andreev reflection spectroscopy of ferromagnet-superconductor (FS) junctions [corrected] is an important probe of spin polarization. We theoretically investigate spin-polarized transport in FS junctions in the presence of Rashba and Dresselhaus interfacial spin-orbit fields and show that Andreev reflection can be controlled by changing the magnetization orientation. RSOC at the GB produces spin channels, hence an Andreev reflection (AR) at the spin active (SA) interface can undergo a π phase change or a sign inversion of d-wave superconductors [13,14]. Unlike a d-wave, a p-wave superconductor is much less studied, although intrinsic or spontaneous π-junction is such a system that has been suggested. An.
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