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Magnetic and electric control of spin- and valley-polarized transport across tunnel junctions on monolayer WSe2
dc.creator | Tahir, Muhammad | |
dc.creator | Krstajić, Predrag | |
dc.creator | Vasilopoulos, Panagiotis | |
dc.date.accessioned | 2019-01-30T17:56:13Z | |
dc.date.available | 2019-01-30T17:56:13Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 2469-9950 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/2236 | |
dc.description.abstract | The recent experimental realization of high-quality WSe2 leads to the possibility of an efficient manipulation of its spin and valley degrees of freedom. Its electronic properties comprise a huge spin-orbit coupling, a direct band gap, and a strong anisotropic lifting of the degeneracy of the valley degree of freedom in a magnetic field. We evaluate its band structure and study ballistic electron transport through single and double junctions (or barriers) on monolayer WSe2 in the presence of spin M-s and valley M-v Zeeman fields and of an electric potential U. The conductance versus the field Ms or Mv decreases in a fluctuating manner. For a single junction, the spin P-s and valley P-v polarizations rise with M = M-v = 2M(s), reach a value of more than 55%, and become perfect above U approximate to 45 meV while for a double junction this change can occur for U >= 50 meV and M >= 5 meV. In certain regions of the (M, U) plane P-v becomes perfect. The conductance g(c), its spin-up and spin-down components, and both polarizations oscillate with the barrier width d. The ability to isolate various carrier degrees of freedom in WSe2 may render it a promising candidate for new spintronic and valleytronic devices. | en |
dc.publisher | Amer Physical Soc, College Pk | |
dc.relation | University of Hafr Al Batin | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/32008/RS// | |
dc.relation | Canadian NSERC - OGP0121756 | |
dc.rights | openAccess | |
dc.source | Physical Review B | |
dc.title | Magnetic and electric control of spin- and valley-polarized transport across tunnel junctions on monolayer WSe2 | en |
dc.type | article | |
dc.rights.license | ARR | |
dcterms.abstract | Тахир, М.; Василопоулос, П.; Крстајић, Предраг; | |
dc.citation.volume | 95 | |
dc.citation.issue | 23 | |
dc.citation.spage | 235402 | |
dc.citation.other | 95(23): | |
dc.citation.rank | M21 | |
dc.identifier.doi | 10.1103/PhysRevB.95.235402 | |
dc.identifier.fulltext | https://cer.ihtm.bg.ac.rs/bitstream/id/8631/2234.pdf | |
dc.identifier.scopus | 2-s2.0-85024371237 | |
dc.identifier.wos | 000402467200007 | |
dc.type.version | publishedVersion |