نتایج جستجو برای: quantum wire
تعداد نتایج: 324244 فیلتر نتایج به سال:
Cold-atom systems offer a great potential for the future design of new mesoscopic quantum systems with properties that are fundamentally different from semiconductor nanostructures. Here, we investigate the quantum-gas analogue of a quantum wire and find a new scenario for the quantum transport: Attractive interactions may lead to a complete suppression of current in the low-bias range, a total...
We elucidate the origin and nature of the D’yakonov-Perel’ spin relaxation in a quantum wire structure, showing (analytically) that there are three necessary conditions for it to exist: (i) transport must be multi-channeled, (ii) there must be a Rashba spin orbit interaction in the wire, and (iii) there must also be a Dresselhaus spin orbit interaction. Therefore, the only effective way to comp...
High-resolution grating x-ray diffraction from a periodic quantum-wire structure is shown to be highly sensitive to strain-field variations near a surface or an interface. Information on two types of strain gradients can be obtained: a longitudinal gradient, which can produce asymmetric diffraction profiles, and a transverse gradient, which can generate additional diffuse intensity streaks in r...
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