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| '''Spin pumping''' is a method of generating a [[spin current]], the [[spintronics|spintronic]] analog of a [[battery (electricity)|battery]] in conventional [[electronics]].
| | Nice to meet you, I am Marvella Shryock. South Dakota is exactly where me and my husband live and my family members loves it. Doing ceramics is what adore doing. Managing people has been his day occupation for a whilst.<br><br>Feel free to surf to my website: [http://www.asseryshit.com/groups/valuable-guidance-for-successfully-treating-yeast-infections/ home std test kit] |
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| In order to make a spintronic device, the primary requirement is to have a system that can generate a current of spin-polarized [[electrons]], as well as a system that is sensitive to the spin polarization. Most spintronic devices also have a unit in between these two that changes the current of electrons depending on the spin states. Candidates for such devices include injection schemes based on [[magnetic semiconductors]] and [[ferromagnetism|ferromagnetic]] [[metal]]s, [[ferromagnetic resonance]] devices<ref name=Tserkovnyak>
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| {{Cite journal
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| | title = Enhanced Gilbert Damping in Thin Ferromagnetic Films
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| | year = 2002
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| | volume = 88 | issue = 11
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| | author = Y Tserkovnyak et al
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| | journal = Physical Review Letters
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| | doi = 10.1103/PhysRevLett.88.117601
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| | bibcode=2002PhRvL..88k7601T
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| |arxiv = cond-mat/0110247 }}</ref>
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| , and a variety of [[spin-dependent pump]]s. Optical, microwave and electrical methods are also being explored<ref>
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| {{Cite journal
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| | title = Spin Pumping by Parametrically Excited Exchange Magnons
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| | year = 2011
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| | volume = 106 | page = 216601
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| | author = C Sandweg et al
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| | journal = Physical Review Letters
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| | doi = 10.1103/PhysRevLett.106.216601
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| | bibcode=2011PhRvL.106u6601S
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| |arxiv = 1103.2229 }}</ref>
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| .These devices could be used for low-power data transmission in [[spintronic]] devices<ref>
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| {{Cite journal
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| | title = Spin-magnon transmutation
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| | year = 2011
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| | volume = 4 | page = 40
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| | author = G E Bauer and Y Tserkovnyak
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| | journal = Physics
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| | doi = 10.1103/Physics.4.40
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| |bibcode = 2011PhyOJ...4...40B }}</ref>
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| or to transmit electrical signals through insulators.<ref>
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| {{Cite journal
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| | title = Transmission of electrical signals by spin-wave interconversion in a magnetic insulator
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| | year = 2010
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| | volume = 464
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| | author = Y Kajiwara
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| | journal = Nature
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| | doi = 10.1038/nature08876
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| | issue=7286
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| |bibcode = 2010Natur.464..262K }}</ref>
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| The spin pumped into an adjacent layer by a precessing magnetic moment is given by<ref name=Tserkovnyak/>
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| :<math>\vec j_s = {\hbar \over {4 \pi}} g^{\uparrow \downarrow} {1 \over M_S^2} \langle \vec M(t) \times {{d \vec M(t))} \over {dt}} \rangle </math>
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| where <math>\vec j_s</math> is the spin current (the vector indicates the orientation of the spin, ''not'' the direction of the current), <math>g^{\uparrow \downarrow}</math> is the spin-mixing conductance, <math> M_S^2</math> is the saturation magnetization, and <math>\vec M(t)</math> is the time-dependent orientation of the moment.
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| ==References==
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| {{Reflist}}
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| ==See also==
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| *[[Spintronic]]
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| *[[Spin wave]]
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| *[[Spin Engineering]]
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| *[[Spin Hall effect]]
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| {{DEFAULTSORT:Spin Pumping}}
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| [[Category:Spintronics]]
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| {{Physics-stub}}
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Nice to meet you, I am Marvella Shryock. South Dakota is exactly where me and my husband live and my family members loves it. Doing ceramics is what adore doing. Managing people has been his day occupation for a whilst.
Feel free to surf to my website: home std test kit