منابع مشابه
Observation of Fractional Charge of (1/3)e on Matter
Measurements on niobium spheres which show unambiguously the existence of fractional charges of 3e are reported. Charge changes of ~ on particular spheres when they con. tact other surfaces are continually observed. Of 21 new measurements, four charges of + 3e, four of —3e, and thirteen of zero are found. Extensive measurements and critical a&alyses have assured us that the background forces ar...
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Transmission electron diffraction (TED) combined with direct methods have been used to study the sqrt[3]xsqrt[3]R30 degrees reconstruction on the polar (111) surface of MgO and refine the valence charge distribution. The surface is nonstoichiometric and is terminated by a single magnesium atom. A charge-compensating electron hole is localized in the next oxygen layer and there is a nominal char...
متن کاملco nd - m at / 9 70 72 89 29 J ul 1 99 7 Direct Observation of a Fractional Charge
Ever since Milliken’s famous experiment it is well known that the electrical charge is quantized in units of the electronic charge e. For that reason, Laughlin’s theoretical prediction of the existence of fractionally charged quasi particles, put forward in order to explain the Fractional Quantum Hall (FQH) effect, is very counter intuitive. The FQH effect is a phenomenon that occurs in a Two D...
متن کاملFemtosecond direct observation of charge transfer between bases in DNA.
Charge transfer in supramolecular assemblies of DNA is unique because of the notion that the pi-stacked bases within the duplex may mediate the transport, possibly leading to damage and/or repair. The phenomenon of transport through pi-stacked arrays over a long distance has an analogy to conduction in molecular electronics, but the mechanism still needs to be determined. To decipher the elemen...
متن کاملDirect Observation of Charge Inversion in Divalent Nanofluidic Devices.
Solid-state nanofluidic devices have proven to be ideal systems for studying the physics of ionic transport at the nanometer length scale. When the geometrical confining size of fluids approaches the ionic Debye screening length, new transport phenomena occur, such as surface mediated transport and permselectivity. Prior work has explored these effects extensively in monovalent systems (e.g., p...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 1998
ISSN: 0921-4526
DOI: 10.1016/s0921-4526(98)00139-2