Coulomb blockade thermometry
Coulomb blockade thermometry
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库仑封锁测温
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
J. Pekola
中科院分区：
文献类型：
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作者：
K. Hirvi;J. Kauppinen;A. Korotkov;M. Paalanen;J. Pekola
已经发现，正常金属隧道结的一维阵列表现出非常适合于一次和二次测温的性质，该温度范围可在光刻可调的温度范围内延伸约二十年。该温度计对实际图案中的不均匀以及甚至对强磁场非常不敏感。我们还讨论了这种器件在极低温度下的行为，在极低温度下，由于电子声子耦合较差而产生的热电子效应最终占据主导地位，在极高温度下，出现有限隧道势垒效应。短阵列，特别是单隧道结，显示出与长阵列的普遍行为的有趣的偏差。
One dimensional arrays of normal metal tunnel junctions have been found to exhibit properties which are very suitable for primary and secondary thermometry in a lithographically adjustable temperature range which extends over about two decades. The thermometer is remarkably insensitive to nonuniformities in the actual pattern and to even strong magnetic fields. We also discuss the behaviour of this device at very low temperatures where the hot electron effect due to poor electron phonon coupling ultimately takes over and at very high temperatures where the finite tunnel barrier effects appear. Short arrays, and especially single tunnel junctions show interesting deviations from the universal behaviour of the long array.