| 摘要 |
The invention concerns an electronic apparatus (10) which comprises a semiconducting body (11) having two end portions (12, 13) and an intermediate portion (14) in-between these end portions (12, 13). The body (11) has at least one constriction of cross-section (15). An electrically conductive path (16) is provided which runs around at least a part of said body (11). The body (11) is inhomogeneously doped using different dopants so as to provide an intermediate section (17) having a lower dopant concentration than the two end portions (12, 13).
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