CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrilic)
    • Serbian (Latin)
  • Login
View Item 
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   Central Repository
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Magnetic and electric control of spin- and valley-polarized transport across tunnel junctions on monolayer WSe2

Authorized Users Only
2017
Authors
Tahir, Muhammad
Krstajić, Predrag
Vasilopoulos, Panagiotis
Article (Published version)
Metadata
Show full item record
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 spi...n-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.

Source:
Physical Review B, 2017, 95, 23
Publisher:
  • Amer Physical Soc, College Pk
Projects:
  • University of Hafr Al Batin
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)
  • Canadian NSERC - OGP0121756

DOI: 10.1103/PhysRevB.95.235402

ISSN: 2469-9950

WoS: 000402467200007

Scopus: 2-s2.0-85024371237
[ Google Scholar ]
9
10
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2236
Collections
  • Radovi istraživača / Researchers' publications
Institution
IHTM

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceInstitutionsAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

OpenAIRERCUB