Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Zhi Ping Niu"'
Autor:
Zhi Ping Niu, Meng Meng Wu
Publikováno v:
New Journal of Physics, Vol 22, Iss 9, p 093021 (2020)
We investigate the spin transfer torque (STT) driven by electric bias voltages across and temperature gradients through ferromagnetic/normal/ferromagnetic graphene junctions. Due to the unique band structure of the ferromagnetic graphene, there exist
Externí odkaz:
https://doaj.org/article/559665b024c44cc58778916c450a9669
Autor:
Zhi Ping Niu
Publikováno v:
New Journal of Physics, Vol 21, Iss 9, p 093044 (2019)
The presence of the coupled spin and valley degrees of freedom makes silicene an important material for spintronics and valleytronics. Here we report a spin-valley filter effect in a silicene based antiferromagnetic/ferromagnetic junction. It is foun
Externí odkaz:
https://doaj.org/article/838da9c680464ad89222f1043fc5e626
Autor:
Zhi Ping Niu
Publikováno v:
New Journal of Physics, Vol 20, Iss 10, p 103021 (2018)
The presence of the valley degree of freedom in graphene leads to the valleytronics, in which information is encoded by the valley quantum number of the electron. We propose a valley controlled spin-transfer torque (STT) in graphene-based normal/norm
Externí odkaz:
https://doaj.org/article/a86f590294bc4cfb9b2f367a2717a796
Publikováno v:
New Journal of Physics, Vol 17, Iss 7, p 073026 (2015)
Electrons in two-dimensional crystals with a honeycomb lattice structure possess a valley degree of freedom in addition to charge and spin, which has revived the field of valleytronics. In this work we investigate the valley-resolved thermoelectric t
Externí odkaz:
https://doaj.org/article/29bb5caca5cf4732a3465be6bb386e6c
Autor:
Zhi Ping Niu, Xin Pei Wen
Publikováno v:
Journal of Physics D: Applied Physics. 56:345301
Antiferromagnetic spintronics is a rapidly growing subfield of spintronics in condensed-matter physics and information technology. Electrical current in collinear antiferromagnetic materials is typically spin unpolarized, limiting the realization of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b99db45e2fab09bf0fc321b792cd0b60
https://doi.org/10.1088/1361-6463/acd401
https://doi.org/10.1088/1361-6463/acd401
Autor:
Shuo Jun Wang, Zhi Ping Niu
Publikováno v:
Physics Letters A. 448:128333
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79825ffac609607c39dfc778d4de19c2
https://doi.org/10.1016/j.physleta.2022.128333
https://doi.org/10.1016/j.physleta.2022.128333
Autor:
Zhi Ping Niu, Xin Pei Wen
Publikováno v:
Journal of Physics D: Applied Physics. 55:375302
Anomalous valley Hall effect (AVHE), which forwards a strategy for combining valleytronics and spintronics, has recently attracted much interest. Usually, this effect is associated with the anomalous velocity acquired by the carriers due to the Berry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70e5bd75948d4f32005646eef753d3a2
https://doi.org/10.1088/1361-6463/ac7d1d
https://doi.org/10.1088/1361-6463/ac7d1d
Autor:
Zhi Ping Niu, Shuo Jun Wang
Publikováno v:
Journal of Physics D: Applied Physics. 55:255303
In this work, we study the valley dependent current in an α − T 3 lattice based device via the non-equilibrium Green’s function method. The influences of off-resonant circularly polarized light on band structures and current–voltage characteri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dc76b9ec85aa4bcb6fc50fb2930b7b0
https://doi.org/10.1088/1361-6463/ac5992
https://doi.org/10.1088/1361-6463/ac5992
Autor:
Zhi Ping Niu, Jian-ming Yao
Publikováno v:
Physics Letters A. 382:920-924
We theoretically predict the existence of tunneling valley Hall effect and Nernst effect in the normal/strain/normal graphene junctions, where a strained graphene is sandwiched by two normal graphene electrodes. By applying an electric bias a pure tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62da6cef350b0a24297121c661258192
https://doi.org/10.1016/j.physleta.2018.01.038
https://doi.org/10.1016/j.physleta.2018.01.038
Autor:
Xueshi Wu, Zhi Ping Niu
Publikováno v:
Physics Letters A. 382:729-733
Weyl semimetals and nodal line semimetals display a host of novel properties. Floquet Weyl semimetals with tunable Weyl points can be obtained from nodal line semimetals under the circularly polarized off-resonant light. Here we theoretically investi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7b2acd9d1d8b7fc90bcdbc170fa1165
https://doi.org/10.1016/j.physleta.2017.12.054
https://doi.org/10.1016/j.physleta.2017.12.054