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100 _a20160513a2003 k y0engy50 ba
101 0 _aeng
102 _aNL
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181 0 _ai
182 0 _ab
200 1 _aThe effect of internal fields on tunneling current in strained GaN/AlxGa1-x N(0001) structures
_dВлияние внутренних полей на туннельный ток в напряженных структурах GaN/AlxGa1-xN(0001)
_fS. N. Grinyaev, A. N. Razzhuvalov
203 _aText
_celectronic
225 1 _aSemiconductor Structures, Interfaces, And Surfaces
300 _aTitle screen
320 _a[References: 13 tit.]
330 _aThe influence of internal fields on tunnelling current in w-GaN/AlxGa1?x N(0001) nitride structures with strained barrier layers is investigated by the pseudopotential and scattering-matrix methods. It is shown that, for symmetric two-barrier structures, spontaneous polarization and a piezoelectric field lead to asymmetry of the current-voltage characteristic when the direction of an external field is varied. Moreover, for asymmetric structures these phenomena cause the current to depend on the position of layers along the polar axis. In confined superlattices, internal fields form a Stark ladder of electron states, which manifests itself in current peaks for a relatively weak external field (?10 kV/cm). Pronounced features in the tunnel current are observed for layer thicknesses which are smaller in comparison with the GaAs/AlGaAs(001) structures by a factor of approximately 2. The dependence of tunnel current on the thickness and position of the layers, temperature, and degree of doping are explained from an analysis of the Stark effect for resonance states.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tSemiconductors
_oScientific Journal
463 _tVol. 37, iss. 4
_v[P. 433-438]
_d2003
510 1 _aВлияние внутренних полей на туннельный ток в напряженных структурах GaN/AlxGa1-xN(0001)
_zrus
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
700 1 _aGrinyaev
_bS. N.
_cphysicist
_cAssociate Professor of Tomsk Polytechnic University, Candidate of physical and mathematical science
_f1951-
_gSergey Nikolaevich
_2stltpush
_3(RuTPU)RU\TPU\pers\32574
701 1 _aRazzhuvalov
_bA. N.
_cphysicist
_cassociate Professor of Tomsk Polytechnic University, candidate of physico-mathematical Sciences
_f1976-
_gAlexander Nikolaevich
_2stltpush
_3(RuTPU)RU\TPU\pers\36680
801 2 _aRU
_b63413507
_c20160513
_gRCR
856 4 _uhttp://dx.doi.org/10.1134/1.1568463
942 _cCF