{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:45:46Z","timestamp":1753872346761,"version":"3.41.2"},"reference-count":13,"publisher":"AIP Publishing","issue":"6","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2005,8,8]]},"abstract":"<jats:p>Treating itinerant magnetism within the simplest two-subband Hubbard model, it is shown that the variation of the Fermi energy under applied magnetic field is inversely proportional to the spontaneous magnetization (when the latter is small). Hence, the variation is most pronounced at closeness to the critical Stoner condition, that is to the quantum critical point of ferromagnetic condition. The perspectives of this result for magnetic tuning of tunnel conductance in spintronics devices are discussed.<\/jats:p>","DOI":"10.1063\/1.2009049","type":"journal-article","created":{"date-parts":[[2005,8,2]],"date-time":"2005-08-02T16:54:35Z","timestamp":1123001675000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Magnetic tuning of Fermi level for tunnel spintronics devices"],"prefix":"10.1063","volume":"87","author":[{"given":"Yu. G.","family":"Pogorelov","sequence":"first","affiliation":[{"name":"Universidade do Porto CFP and Departmento de F\u00edsica, Faculdade de Ci\u00eancias, , Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]},{"given":"J. B.","family":"Sousa","sequence":"additional","affiliation":[{"name":"Universidade do Porto IFIMUP and Physics Departmento de F\u00edsica, Faculdade de Ci\u00eancias, , Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]},{"given":"J. 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