2 edition of Coherent transport in superconducting and ferromagnetic hybrid systems found in the catalog.
Coherent transport in superconducting and ferromagnetic hybrid systems
Daniel Huertas Hernando
Thesis (doctoral)--Technische Universiteit Delft, 2002.
|Statement||door Daniel Huertas Hernando.|
|The Physical Object|
|Pagination||x, 119 p. :|
|Number of Pages||119|
Experimental System. The investigated hybrid system is illustrated in Figure system consists of a regular superconducting niobium (Nb) structure placed on top of ferromagnetic Ni 80 Fe 20 permalloy (Py) thin film. The superconducting periodic structure is represented by an array of Nb stripes of dimensions X × Y × Z = 3 × × µm 3 placed with the period a = 4 µm along the Cited by: 1. Many properties unique to these systems arise due to the proximity effects between ferromagnets and superconductors. We determine the conductance in each spin channel and analyze its dependence on the magnetic misalignment angle between the ferromagnets, as well as on other physical parameters pertinent to multi-layered : Evan Moen, Oriol Valls.
We have identified ferromagnetic- and superconducting-like magnetization hysteresis loops in highly oriented pyrolytic graphite samples below and above room temperature. We also found that both behaviors are very sensitive to low-temperature—as compared to the sample synthesis temperature—heat by: potential of the superconducting state has yet to be fully exploited. In particular, there is a major need for a superconducting three-terminal device with both gain and input/output isolation. Lack of such a device is a severe barrier limiting radio-frequency, and ultra-fast, low-power digital NiAuthor: Ivan P. Nevirkovets, Georgy V. Prokopenko, Oleg A. Mukhanov, John B. Ketterson.
Among various novel phenomena that emerge from the interaction between the superconductor and ferromagnet, the π state (junction) works as a phase shifter in superconducting devices, and several proposals and demonstrations of applications to quantum computing elements (qubits), classical superconducting logic circuits, and cryogenic memory Cited by: 2. Giazotto coordinates as Principal Investigator (PI) the activities of mesoscopic superconductivity, coherent caloritronics, electronic refrigeration, ultrasensitive quantum magnetometry, superconducting spintronics, and quantum transport in hybrid systems at ultralow temperatures at NEST laboratory.
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From book Theory of Quantum Transport in Ferromagnetic-Superconducting Hybrid Systems. We derive a phase diagram between the cryptoferromagnetic and ferromagnetic states Coherent transport in superconducting and ferromagnetic hybrid systems book discuss the.
The ferromagnetic wires were made of Ho, a conical ferromagnet. The distance between the interfaces was much larger than the singlet superconducting penetration depth. The fields of spintronics and superconductivity are typically considered to be incompatible.
Spintronic devices incorporate spin-polarized currents and magnetic fields, both of which act to inhibit superconducting transport, at least to a significant degree. However, from a technological perspective, these effects also provide a means to control the superconductivity in a ferromagnet.
Cite this paper as: Gu J.Y., Bazaliy Y.B., Bader S.D., You C.Y. () Ferromagnetic-Superconducting Hybrid Systems. In: Glatz A., Kozub V.I., Vinokur V.M. (eds Cited by: 1. Ferromagnetism and superconductivity are, in a way, two opposed tendencies that seemingly cannot coexist in one crystal.
Indeed, a superconductor. Generation, Imaging and Control of Novel Coherent Electronic States in Artificial Ferromagnetic-Superconducting Hybrid Metamaterials and Devices Project: Research Eschrig, Matthias (PI).
Rigidity of an ordered phase in condensed matter results in collective excitation modes spatially extending in macroscopic dimensions. Magnon is a quantum of an elementary excitation in the ordered spin system, such as ferromagnet.
Being low dissipative, dynamics of magnons in ferromagnetic insulators has been extensively studied and widely applied for decades in the contexts of Cited by: 6.
The following thesis is devoted to a theoretical description of superconducting and ferromagnetic hybrid systems, where nanostructures, as quantum dot molecules or metallic island single electron transistors are tunnel coupled to leads with the respective material property.
The work is divided into three parts, presenting at first a general transport theory, which is then used to address the Author: Sebastian Pfaller. Coherent Transport in Superconducting and Ferromagnetic Hybrid Systems () Pagina-navigatie: Main; Save publication.
Save as MODS; Export to Mendeley; Save as EndNoteCited by: 1. Ferromagnetic superconductors. The international research team studied a monocrystalline compound of europium, iron, and arsenic, doped with phosphorus with the formula EuFe 2 (As P ) 2.
Electron subgap transport in hybrid systems combining superconductors with normal or ferromagnetic metals (F.W.J. Hekking) Course 7. Low-temperature transport through a quantum dot (Leonid I. Glazman and Michael Pustilnik) Seminar 3. Transport through quantum point Book Edition: 1.
In van der Waals materials, the collective coherent behaviour of carriers has been probed successfully by transport measurements 3,4,5,6. However, Cited by: The ferromagnetic lead (F) is also coupled directly to the superconductor lead (S).
Notice that the ferromagnetic lead is biased by an electric voltage V while the superconductor is kept grounded. The couplings among all elements of the system are described by the intensities t sf and t d. The whole system presents a ring geometry where the Author: T.J.S.
Facio, P.A. Orellana, A.R. Jurelo, M.S. Figueira, G.G. Cabrera, E.C. Siqueira. We consider the hybrid MC that is represented by a nm thick Py ferromagnetic film with lateral dimensions X × Y = × µm 2 and an array of superconducting stripes of dimensions X × Y × Z = × × µm 3 placed with the period a = 1 µm along the x ‐ by: 1.
[1, 2] for homogeneous systems. In such systems, both order parameters are homog-eneous in space and suppress each other. As a result, one or both of the orderings are weak.
A natural way to avoid the mutual suppression of the order parameter of the superconducting (S) and ferromagnetic (F) subsystems is to separate them by a thin.
Ferromagnetic superconductors are materials that display intrinsic coexistence of ferromagnetism and include UGe 2, URhGe, and UCoGe. Evidence of ferromagnetic superconductivity was also reported for ZrZn 2 inbut later reports question these findings.
These materials exhibit superconductivity in proximity to a magnetic quantum critical point. This article is an overview of recent experimental and theoretical work on transport in phase-coherent hybrid nanostructures, with particular emphasis on dc electrical conduction.
A summary of multiple-scattering theory and the quasi-classical methods is presented Cited by: Phase coherent transport in hybrid superconducting structures: the case of d-wave superconductors: Authors: Cook, P.
A.; Abstract We examine the effect of d-wave symmetry on zero bias anomalies in normal-superconducting tunnel junctions. In the presence of d-wave pairing, zero-bias anomalies are suppressed compared with the s-wave case. Coherent transport phenomena are difficult to observe due to several sources of decoherence.
For instance, in the electronic transport through quantum devices the Cited by: 4. These lectures provide an overview of the multiple scattering approach to quasi-particle transport in phase-coherent superconducting nanostructures, with particular emphasis on Cited by:.
The spin-dependent transport property of ferromagnetic graphene superlattice unit cell junction is studied under the induced ac-fields with range of frequencies and different values of the length, L, of both normal and ferromagnetic graphene superlattice.
The conductance for both spin alignments is deduced using transfer matrix : Mina D. Asham, Adel H. Phillips.Text We report a systematic study on electronic nematicity in LaFe1-xCoxAsO (0 ≤ x ≤ ) by means of shear modulus and thermal expansion measurements of detwinned single crystals.
For pure LaFeAsO, the evolution of orthorhombic distortion at TS ~ K is. We present an exhaustive theoretical analysis of a double-loop Josephson proximity interferometer, such as the one recently realized by Strambini et al.
for control of the Andreev spectrum via an external magnetic field. This system, called ω -SQUIPT, consists of a T-shaped diffusive normal metal (N) attached to three superconductors (S) forming a double-loop configuration. By using the Cited by: