onr:"swepub:oai:DiVA.org:kth-33171"
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 02480naa a2200325 4500 | |
| 001 | oai:DiVA.org:kth-33171 | |
| 003 | SwePub | |
| 008 | 110429s2008 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-331712 URI |
| 024 | 7 | a https://doi.org/10.1103/PhysRevB.78.2053172 DOI |
| 040 | a (SwePub)kth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Ekenberg, Ulfu KTH,Mikroelektronik och Informationsteknik, IMIT4 aut0 (Swepub:kth)u1ajkh76 |
| 245 | 1 0 | a Analysis of electric-field-induced spin splitting in wide modulation-doped quantum wells |
| 264 | 1 | c 2008 |
| 338 | a print2 rdacarrier | |
| 500 | a QC 20110429 | |
| 520 | a We analyze the proper inclusion of electric-field-induced spin splittings in the framework of the envelope function approximation. We argue that the Rashba effect should be included in the form of a macroscopic potential as diagonal terms in a multiband approach rather than the commonly used Rashba term dependent on k and electric field. It is pointed out that the expectation value of the electric field in a subband is sometimes not unique because the expectation values can even have opposite signs for the spin-split subband components. Symmetric quantum wells with Dresselhaus terms and the influence of the interfaces on the spin splitting are also discussed. We apply a well established multiband approach to wide modulation-doped InGaSb quantum wells with strong built-in electric fields in the interface regions. We demonstrate an efficient mechanism for switching on and off the Rashba splitting with an electric field being an order of magnitude smaller than the local built-in field that determines the Rashba splitting. The implications of our findings for spintronic devices, in particular the Datta-Das spin transistor and proposed modifications of it, are discussed. | |
| 650 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
| 653 | a Physics | |
| 653 | a Fysik | |
| 700 | 1 | a Gvozdic, D. M.4 aut |
| 710 | 2 | a KTHb Mikroelektronik och Informationsteknik, IMIT4 org |
| 773 | 0 | t Physical Review B. Condensed Matter and Materials Physicsg 78:20, s. 205317-q 78:20<205317-x 1098-0121x 1550-235X |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33171 |
| 856 | 4 8 | u https://doi.org/10.1103/PhysRevB.78.205317 |
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