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Measurements of the temperature and bias dependence of Single Electron Transistors (SETs) in a dilution refrigerator show that charge noise increases linearly with refrigerator temperature above a voltage-dependent threshold temperature,…

Mesoscale and Nanoscale Physics · Physics 2014-06-10 Martin V. Gustafsson , Arsalan Pourkabirian , Göran Johansson , John Clarke , Per Delsing

A semiclassical formalism is used to investigate the transistor-like behavior of ultracold atoms in a triple-well potential. Atom current flows from the source well, held at fixed chemical potential and temperature, into an empty drain…

Atomic Physics · Physics 2016-02-17 Seth C. Caliga , Cameron J. E. Straatsma , Alex A. Zozulya , Dana Z. Anderson

A quantum-dot thermal transistor consisting of three Coulomb-coupled quantum dots coupled to respective electronic reservoirs by tunnel contacts is established. The heat flows through the collector and emitter can be controlled by the…

Applied Physics · Physics 2018-11-29 Yanchao Zhang , Zhimin Yang , Xin Zhang , Bihong Lin , Guoxing Lin , Jincan Chen

We have fabricated aluminum single-electron transistors in which the island is not in contact with the substrate. This new type of device, which can be called suspended single-electron transistor (SUSET), displayed well-defined I-V and…

Superconductivity · Physics 2009-11-13 G. S. Paraoanu , A. M. Halvari

As the conventional silicon metal-oxide-semiconductor field-effect transistor (MOSFET) approaches its scaling limits; many novel device structures are being extensively explored. Among them, the silicon nanowire transistor (SNWT) has…

Emerging Technologies · Computer Science 2014-07-10 Mayank Chakraverty

The current noise spectrum of a single-electron transistor (SET) coupled to a nano-mechanical resonator is calculated in the classical regime. Correlations between the charge on the SET island and the position of the resonator give rise to…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. D. Armour

Vertical tunneling field-effect-transistor (FET) based on graphene heterojunctions with layers of hBN is simulated by self-consistent quantum transport simulations. It is found that the asymmetric p-type and n-type conduction is due to work…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 S. Bala Kumar , Gyungseon Seol , Jing Guo

Strontium titanate is a wide-gap semiconductor avoiding a ferroelectric instability thanks to quantum fluctuations. This proximity leads to strong screening of static Coulomb interaction and paves the way for the emergence of a very dilute…

Superconductivity · Physics 2018-11-27 Clément Collignon , Xiao Lin , Carl Willem Rischau , Benoît Fauqué , Kamran Behnia

A self-consistent theoretical treatment of a triple-well atomtronic transistor circuit reveals the mechanism of gain, conditions of oscillation, and properties of the subsequent coherent matterwaves emitted by the circuit. A Bose-condensed…

Quantum Physics · Physics 2021-09-15 Dana Z. Anderson

Charge density waves (CDW) have been studied at the surface of a cleaved TTF-TCNQ single crystal using a low temperature scanning tunneling microscope (STM) under ultra high vacuum (UHV) conditions. All CDW phase transitions of TTF-TCNQ…

Strongly Correlated Electrons · Physics 2009-11-07 Zhao Z. Z. Wang , Denis Jerome , Jean Christophe Girard , Claude Pasquier , Klaus Bechgaard

A consistent device model to describe current-voltage characteristics of metal/insulator/metal systems is developed. In this model the insulator and the metal electrodes are described within the same theoretical framework by using density…

Materials Science · Physics 2015-05-13 F. Neumann , Y. A. Genenko , C. Melzer , H. von Seggern

We have fabricated a variety of novel molecular tunnel junctions based on self-assembled-monolayers (SAM) of two-component solid-state mixtures of molecular wires (1,4 methane benzene-dithiol; Me-BDT with two thiol anchoring groups), and…

Materials Science · Physics 2009-11-11 Vladimir Burtman , Alexander S. Ndobe , Valy Z. Vardeny

The standard model of spin-transfer torque (STT) in antiferromagnetic spintronics considers exchange of angular momentum between quantum spins of flowing electrons and noncollinear-to-them localized spins treated as classical vectors. These…

Strongly Correlated Electrons · Physics 2021-05-13 Marko D. Petrovic , Priyanka Mondal , Adrian E. Feiguin , Branislav K. Nikolic

Traditional transistors based on complementary metal-oxide-semiconductor (CMOS) and metal-oxide-semiconductor field-effect transistors (MOSFETs) are facing significant limitations as device scaling reaches the limits of Moore's Law. These…

Applied Physics · Physics 2024-09-30 Chloe Isabella Tsang , Haihui Pu , Junhong Chen

The current through ferromagnetic single-electron transistors (SET's) is considered. Using path integrals the linear response conductance is formulated as a function of the tunnel conductance vs. quantum conductance and the temperature vs.…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Arne Brataas , X. H. Wang

Capacitance-Voltage (C-V) & Ballistic Current- Voltage (I-V) characteristics of Double Gate (DG) Silicon-on- Insulator (SOI) Flexible FETs having sub 35nm dimensions are obtained by self-consistent method using coupled Schrodinger- Poisson…

Charge density wave (CDW) ordering in NbSe3 and the structurally related quasi one-dimensional compounds is reconsidered. Since the modulated ground state is characterized by unstable nano-domains, the structural information obtained from…

Mesoscale and Nanoscale Physics · Physics 2013-03-27 Albert Prodan , Herman J. P. van Midden , Erik Zupanič , Rok Žitko

We study the charge transfer dynamics between a silicon quantum dot and an individual phosphorous donor using the conduction through the quantum dot as a probe for the donor ionization state. We use a silicon n-MOSFET (metal oxide field…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 G. Mazzeo , E. Prati , M. Belli , G. Leti , S. Cocco , M. Fanciulli , F. Guagliardo , G. Ferrari

We propose a mesoscopic setup which exhibits strong and manifestly non-Gaussian fluctuations of energy and temperature when suitably driven out of equilibrium. The setup consists of a normal metal island (N) coupled by tunnel junctions (I)…

Mesoscale and Nanoscale Physics · Physics 2012-04-03 M. A. Laakso , T. T. Heikkilä , Yuli V. Nazarov

A single hole transistor is patterned in a p-Si/SiGe quantum well by applying voltages to nanostructured top gate electrodes. Gating is achieved by oxidizing the etched semiconductor surface and the mesa walls before evaporation of the top…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 U. Doetsch , U. Gennser , T. Heinzel , S. Luescher , C. David , G. Dehlinger , D. Gruetzmacher , K. Ensslin