jap banner
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

SECTION LISTING

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

15 May 2003

Volume 93, Issue 10, pp. 5855-8792

Return to All Sections
back to top
RSS Feeds

Driving the single-electron device with a magnetic field (invited)

Hiroshi Shimada, Keiji Ono, and Youiti Ootuka

J. Appl. Phys. 93, 8259 (2003); http://dx.doi.org/10.1063/1.1557828 (6 pages) | Cited 7 times

Online Publication Date: 9 May 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
The single-electron devices some of whose electrodes are composed of ferromagnetic metals can be driven with a magnetic field. It is based on the fact that a ferromagnetic electrode has a function as a magnetochemical or magnetoelectric coupling component in the device through the Zeeman effect on the electron spins in it. Double- and triple-small-junction devices composed of Ni and Co electrodes showed conductance oscillations typical to the single-electron device when the applied magnetic field was swept, illustrating the magnetic-field control of the device operation. A single-electron box and a single-electron pump driven with a magnetic field are described based on the functions of the ferromagnetic electrodes. © 2003 American Institute of Physics.
Show PACS
85.75.-d Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields
75.50.Cc Other ferromagnetic metals and alloys
73.23.Hk Coulomb blockade; single-electron tunneling
75.60.Jk Magnetization reversal mechanisms
75.70.Cn Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect

Transport in magnetic nanostructures in the presence of Coulomb interaction (invited)

J. Martinek, J. Barnaś, A. Fert, S. Maekawa, and G. Schön

J. Appl. Phys. 93, 8265 (2003); http://dx.doi.org/10.1063/1.1557831 (6 pages) | Cited 8 times

Online Publication Date: 9 May 2003

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Recent experiments on magnetic nanostructured materials revealed new phenomena associated with the interplay of ferromagnetism and discrete charging effects. A typical example is a ferromagnetic single-electron transistor, i.e., a small grain or quantum dot (QD) coupled by tunnel junctions to ferromagnetic electrodes. We investigate the interplay of charge and spin degrees of freedom in these systems in the sequential tunneling, cotunneling and strong coupling regimes. The description is formulated in a two-dimensional space of charge and spin states, and allows us to calculate electric and spin currents, spin and charge accumulation and fluctuations, as well as the tunnel magnetoresistance. For QDs, we find a Kondo resonance at low temperatures, which significantly depends on the spin polarization of conduction electrons in the leads. © 2003 American Institute of Physics.
Show PACS
75.75.-c Magnetic properties of nanostructures
75.50.Tt Fine-particle systems; nanocrystalline materials
75.47.-m Magnetotransport phenomena; materials for magnetotransport
85.75.-d Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields
75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close