Spin filter, spin amplifier and spin diode in graphene nanodisk
نویسندگان
چکیده
منابع مشابه
Spin Transport and Spin Precession in Graphene
Spin degree of freedom of electrons is one of the alternative state variables under consideration for processing information, beyond the charge based CMOS technology. The potential of spintronics based research lies in the possibilities for a new generation of computers that can be non-volatile, faster, smaller, and capable of simultaneous data storage and processing all with reduced energy con...
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Double layer two-dimensional electron systems at high perpendicular magnetic field are used to realize magnetic tunnel junctions in which the electrons at the Fermi level in the two layers have either parallel or antiparallel spin magnetizations. In the antiparallel case the tunnel junction, at low temperatures, behaves as a nearly ideal spin diode. At elevated temperatures the diode character ...
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We propose a semiconductor device that can electrically generate entangled electron spin-photon states, providing a building block for entanglement of distant spins. The device consists of a p-i-n diode structure that incorporates a coupled double quantum dot. We show that electronic control of the diode bias and local gating allow for the generation of single photons that are entangled with a ...
متن کاملشار روی ساختار (spin(7
این پایان نامه شامل چهر فصل می باشد که در فصل اول به بیان تعاریف و مفاهیمی خواهیم پرداخت که در طول این پژوهش مورد نیاز است.در فصل دوم به بررسی خمینه هایی با ساختار (spin(7 خوهیم پرداخت.در فصل سوم به بررسی تجزیه فضای فرم ها خواهیم پرداخت، و در فصل چهارم با استفاده از مشتق گیری معادلات، شار عمومی روی ساختار (spin(7 را بدست خواهیم آورد.
15 صفحه اولElectrically tunable spin polarization in a carbon nanotube spin diode.
We have studied the current through a carbon-nanotube quantum dot with one ferromagnetic and one normal-metal lead. For the values of gate voltage at which the normal lead is resonant with the single available nondegenerate energy level on the dot, we observe a pronounced decrease in the current for one bias direction. We show that this rectification is spin dependent, and that it stems from th...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2009
ISSN: 1434-6028,1434-6036
DOI: 10.1140/epjb/e2009-00041-7