Metallic single-electron transistor without traditional tunnel barriers
V.A. Krupeninа,
A.B. Zorinб,
D.E. Presnovб,
M.N. Savvateevа,
J. Niemeyerв аМосковский государственный университет имени М. В. Ломоносова, физический факультет, лаборатория криоэлектроники, Воробьевы горы, г. Москва, 119992, Russia , г. Москва, Россия бМосковский государственный университет имени М.В. Ломоносова, Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына, Ленинские горы 1 стр. 2, Москва, 119991, Российская Федерация вPhysikalisch-Technische Bundesanstalt, Braunschweig, Germany
We report a new type of single-electron transistor (SET) comprising two highly resistive Cr thin-film strips ($\sim1$ $\mu$m long) connecting a $1 \mu$m-long Al island to two Al outer electrodes. These resistors replace small-area oxide tunnel junctions of traditional SETs. Our transistor with a total asymptotic resistance of $110$ k$\Omega$ showed a very sharp Coulomb blockade and reproducible, deep and strictly eperiodic gate modulation in wide ranges of bias currents $I$ and gate voltages $V_g$. In the Coulomb blockade region ($|V|\leqslant$ about $0.5$ mV), we observed a strong suppression of the co-tunneling current allowing appreciable modulation curves $V(V_g)$ to be measured at currents $I$ as low as $100$ fA. The noise figure of our SET was found to be similar to that of typical Al/AlO$_x$/Al single-electron transistors, viz. $\delta Q\approx5\times 10^{-4}e/\sqrt{\mathrm{Hz}}$ at $10$ Hz.
PACS:71.30.+h, 73.23.Hk, 74.50.+r, 74.76.-w (все) DOI:10.1070/1063-7869/44/10S/S25 URL: https://ufn.ru/ru/articles/2001/13/y/ Цитата: Krupenin V A, Zorin A B, Presnov D E, Savvateev M N, Niemeyer J "Metallic single-electron transistor without traditional tunnel barriers" УФН171 113–116 (2001)
@article{Krupenin:2001,author = {V. A. Krupenin and A. B. Zorin and D. E. Presnov and M. N. Savvateev and J. Niemeyer},title = {Metallic single-electron transistor without traditional tunnel barriers},publisher = {Успехи физических наук},year = {2001},journal = {Усп. физ. наук},volume = {171},number = {13},pages = {113-116},url = {https://ufn.ru/ru/articles/2001/13/y/},doi = {10.1070/1063-7869/44/10S/S25}}