Generation of large spin and valley currents in a quantum pump based on molybdenum disulfide

Physical Chemistry Chemical Physics : PCCP
H KhaniF Kanjouri

Abstract

Generation of large currents, versatile functionality, and simple structures are of fundamental importance in the development of adiabatic quantum pump devices with nanoscale dimensions. In the present study, we propose an adiabatic quantum pump with a simple structure based on molybdenum disulfide, MoS2, to generate large spin and valley resolved currents. We show that pure and fully polarized spin and valley currents can be easily generated by employing two potential gates and using an exchange magnetic field. Unlike graphene and silicene, in order to induce a valley resolved current in MoS2, one does not need to induce strain and apply an electric field. The spin and valley resolved currents are completely coupled together, so that the spin up (down) current is exactly equal to the valley K(K') current. Hence, we can detect the valley resolved current by utilizing more straightforward and simple methods used for the detection of spin resolved currents. The other prominent feature of this proposed pump is its large current, which is two and three orders of magnitude larger than the maximum current of similar pump structures based on silicene and graphene, respectively. The results of this study are promising for the fabricati...Continue Reading

References

Mar 19, 1999·Science·M SwitkesA C Gossard
Jan 22, 2002·Physical Review Letters·Y Makhlin, A D Mirlin
Oct 9, 2002·Physical Review Letters·Eduardo R MuccioloCharles M Marcus
Nov 13, 2003·Physical Review Letters·Prashant Sharma, Piet W Brouwer
Apr 27, 2011·Physical Review Letters·D Gunlycke, C T White
Sep 10, 2011·Physical Review Letters·Franco PellegriniErio Tosatti
Jun 19, 2012·Nature Nanotechnology·Hualing ZengXiaodong Cui
Jul 4, 2012·Nature Nanotechnology·Kamran Behnia
Nov 8, 2012·Nature Nanotechnology·Qing Hua WangMichael S Strano
Jul 30, 2014·Nature Nanotechnology·R SuzukiY Iwasa
Jan 25, 2013·Physical Review Letters·Yongjin JiangFrancisco Guinea
Dec 17, 2014·Nature Materials·Edbert J SieNuh Gedik
Dec 8, 2015·Advanced Materials·Qingyun ZhangUdo Schwingenschlögl
Oct 25, 2016·Advanced Materials·Nirpendra Singh, Udo Schwingenschlögl

❮ Previous
Next ❯

Citations

Jul 22, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Xing-Yi TanRuqian Wu
Mar 20, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·F KanjouriH Khani

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.