tunnel junction


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tunnel junction

[′tən·əl ‚jəŋk·shən]
(electronics)
A two-terminal electronic device having an extremely thin potential barrier to electron flow, so that the transport characteristic (the current-voltage curve) is primarily governed by the quantum-mechanical tunneling process which permits electrons to penetrate the barrier.
References in periodicals archive ?
The line at Severn Tunnel Junction heading east is to be closed for the next five weekends - extending journey times for passengers in South Wales.
Strong enhancement of THz radiation in the STM s tunnel junction enables simultaneous atomic spatial resolution and picosecond time resolution.
Avalanche's STT-MRAM memory is based on proprietary perpendicular magnetic tunnel junction (pMTJ) cells manufactured on high volume, low cost, standard CMOS 300mm process.
If those very profitable parts of the Carmarthen to Manchester and Aberystwyth to Birmingham services are transferred; and any Swansea to Severn Tunnel Junction electric service is not extended as a logical and convenient commuter operation to Bristol not only will we lose through services but considerable revenue will be lost from these "cash cows" and the Welsh Government will pay a large increase in subsidy payments.
The first one was a bridge and tunnel junction at Prince Majed Street (Sabeen) constructed nearly two years ago.
There were delays of up to an hour on the A13 between the Canning Town Flyover and the A1261 East India Dock Link Tunnel junction in east London.
uk UUNNDDEERR TTHHRREEAATT The following Welsh stations' ticket offices could close under recommendations in an officially commissioned report: Aberdare Bargoed Barmouth Cadoxton Cathays Cwmbran Fishguard Harbour Flint Holyhead Llandaf Llandrindod Wells Llandudno Llanelli Machynlleth Merthyr Tydfil Newtown Penarth Pwllheli Radyr Severn Tunnel Junction Trefforest Ystrad Mynach
STT MRAM uses memory storage elements that take advantage of the effect inwhich a current that is passed through a magnetic material - such as a magnetic tunnel junction (MTJ)(3) - reverses its direction of magnetization (Figure 1).
In addition to the usual current-modulation capability, the tunnel junction provides an enhanced means for voltage-controlled modulation of the photon output of the transistor laser.
T] is the resistance at the interface of the tunnel junction.
Another signalling problem at the Severn Tunnel junction affected London to South Wales services run by Arriva Trains Wales, Central Trains, First Great Western and Virgin Trains.
NIST scientists in Boulder recently demonstrated that a major source of decoherence in Josephson qubits arises from spurious microwave resonances that are formed from states within the tunnel junction.