Coulomb blockade anisotropic magnetoresistance: Singleelectronics meets spintronics

J. Wunderlich; T. Jungwirth; B. Kaestner; A. C. Irvine; K. Wang; N. Stone; U. Rana; A. D. Giddings; A. B. Shick; C. T. Foxon; R. P. Campion; D. A. Williams; B. L Gallagher

arXiv · cond-mat/0602608

Coulomb blockade anisotropic magnetoresistance: Singleelectronics meets spintronics

J. Wunderlich·T. Jungwirth·B. Kaestner·A. C. Irvine·K. Wang·N. Stone·U. Rana·A. D. Giddings·A. B. Shick·C. T. Foxon·R. P. Campion·D. A. Williams·B. L Gallagher

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Abstract

Single-electronics and spintronics are among the most intensively investigated potential complements or alternatives to CMOS electronics. Single-electronics, which is based on the discrete charge of the electron, is the ultimate in miniaturization and electro-sensitivity. Spintronics, which is based on manipulating electron spins,delivers high magneto-sensitivity and non-volatile memory effects. So far, major developments in the two fields have followed independent paths with only a few experimental studies of hybrid single-electronic/spintronic devices. Intriguing new effects have been discovered in such devices but these have not, until now, offered the possibility of useful new functionalities. Here we demonstrate a device which shows a new physical effect, Coulomb blockade anisotropic magnetoresistance, and which offers a route to non-volatile, low-field, and highly electro- and magneto-sensitive operation. Since this new phenomenon reflects the magnetization orientation dependence of the classical single-electron charging energy it does not impose constraints on the operational temperature associated with more subtle quantum effects, such as resonant or spin-coherent tunneling.

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J. Wunderlich, T. Jungwirth, B. Kaestner, A. C. Irvine, K. Wang, N. Stone, U. Rana, A. D. Giddings, A. B. Shick, C. T. Foxon, R. P. Campion, D. A. Williams, B. L Gallagher. 2006-02-26. Coulomb blockade anisotropic magnetoresistance: Singleelectronics meets spintronics. https://arxiv.org/abs/cond-mat/0602608

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