Valley polarization in MoS2 monolayers by optical pumping
نویسندگان
چکیده
منابع مشابه
Intrinsic valley polarization of magnetic VSe2 monolayers.
Intrinsic valley polarization can be obtained in VSe2 monolayers with broken inversion symmetry and time reversal symmetry. First-principles investigations reveal that the magnitude of the valley splitting in magnetic VSe2 induced by spin-orbit coupling reaches as high as 78.2 meV and can be linearly tuned by biaxial strain. Besides conventional polarized light, hole doping or illumination with...
متن کاملEffect of light Polarization on the absorption index of alkali metal vapor in optical pumping phenomenon
Recently atomic magnetometers are one of the best tools in biomagnetic measurement such as magnetic field of brain and heart. In this paper, the technology of optically pumped atomic magnetometer based on circularly polarized light absorption pumping is described. We have been investigated a new method for measuring polarization effect in an alkali vapor based on polarized light transmission. I...
متن کاملBulk nuclear polarization enhanced at room temperature by optical pumping.
Bulk (13)C polarization can be strongly enhanced in diamond at room temperature based on the optical pumping of nitrogen-vacancy color centers. This effect was confirmed by irradiating single crystals at a ~50 mT field promoting anticrossings between electronic excited-state levels, followed by shuttling of the sample into an NMR setup and by subsequent (13)C detection. A nuclear polarization o...
متن کاملVapor-solid growth of high optical quality MoS₂ monolayers with near-unity valley polarization.
Monolayers of transition metal dichalcogenides (TMDCs) are atomically thin direct-gap semiconductors with potential applications in nanoelectronics, optoelectronics, and electrochemical sensing. Recent theoretical and experimental efforts suggest that they are ideal systems for exploiting the valley degrees of freedom of Bloch electrons. For example, Dirac valley polarization has been demonstra...
متن کاملValley-splitting and valley-dependent inter-Landau-level optical transitions in monolayer MoS2 quantum Hall systems
Rui-Lin Chu,1 Xiao Li,2 Sanfeng Wu,3 Qian Niu,2 Wang Yao,4 Xiaodong Xu,3,5 and Chuanwei Zhang1,* 1Department of Physics, The University of Texas at Dallas, Richardson, Texas 75080, USA 2Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA 3Department of Physics, University of Washington, Seattle, Washington 98195, USA 4Department of Physics and Center of Theoretica...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Nanotechnology
سال: 2012
ISSN: 1748-3387,1748-3395
DOI: 10.1038/nnano.2012.95