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Showing 1 to 12 of 28 entries
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Vibrational sidebands and the Kondo effect in molecular transistors.

Physical review letters

Paaske J, Flensberg K.
PMID: 15904323
Phys Rev Lett. 2005 May 06;94(17):176801. doi: 10.1103/PhysRevLett.94.176801. Epub 2005 May 02.

Electron transport through molecular quantum dots coupled to a single vibrational mode is studied in the Kondo regime. We apply a generalized Schrieffer-Wolff transformation to determine the effective low-energy spin-spin-vibron interaction. From this model we calculate the nonlinear conductance...

Electronic excitations of a single molecule contacted in a three-terminal configuration.

Nano letters

Osorio EA, O'Neill K, Wegewijs M, Stuhr-Hansen N, Paaske J, Bjørnholm T, van der Zant HS.
PMID: 17941679
Nano Lett. 2007 Nov;7(11):3336-42. doi: 10.1021/nl0715802. Epub 2007 Oct 17.

Low-temperature three-terminal transport measurements through a thiol end-capped pi-conjugated molecule have been carried out. Electronic excitations, including zero and finite-bias Kondo-effects, have been observed and studied as a function of magnetic field. Using a simplified two-orbital model, we have...

Wall shear stress and local plaque development in stenosed carotid arteries of hypercholesterolemic minipigs.

Journal of cardiovascular disease research

Thim T, Hagensen MK, Hørlyck A, Kim WY, Niemann AK, Thrysøe SA, Drouet L, Paaske WP, Bøtker HE, Falk E.
PMID: 22629022
J Cardiovasc Dis Res. 2012 Apr;3(2):76-83. doi: 10.4103/0975-3583.95358.

BACKGROUND: Wall shear stress is thought to play a critical role in the local development of atherosclerotic plaque and to affect plaque vulnerability. However, current models and hypotheses do not fully explain the link between wall shear stress and...

Getting a Grip on the Undrugged: Targeting β-Catenin with Fragment-Based Methods.

ChemMedChem

Kessler D, Mayer M, Zahn SK, Zeeb M, Wöhrle S, Bergner A, Bruchhaus J, Ciftci T, Dahmann G, Dettling M, Döbel S, Fuchs JE, Geist L, Hela W, Kofink C, Kousek R, Moser F, Puchner T, Rumpel K, Scharnweber M, Werni P, Wolkerstorfer B, Breitsprecher D, Baaske P, Pearson M, McConnell DB, Böttcher J.
PMID: 33275320
ChemMedChem. 2021 May 06;16(9):1420-1424. doi: 10.1002/cmdc.202000839. Epub 2021 Jan 14.

Aberrant WNT pathway activation, leading to nuclear accumulation of β-catenin, is a key oncogenic driver event. Mutations in the tumor suppressor gene APC lead to impaired proteasomal degradation of β-catenin and subsequent nuclear translocation. Restoring cellular degradation of β-catenin...

Tunable Magnetic Anisotropy from Higher-Harmonics Exchange Scattering on the Surface of a Topological Insulator.

Physical review letters

Paaske J, Gaidamauskas E.
PMID: 27824441
Phys Rev Lett. 2016 Oct 21;117(17):177201. doi: 10.1103/PhysRevLett.117.177201. Epub 2016 Oct 20.

We show that higher-harmonics exchange scattering from a magnetic adatom on the surface of a three dimensional topological insulator leads to a magnetic anisotropy whose magnitude and sign may be tuned by adjusting the chemical potential of the helical...

Kondo blockade due to quantum interference in single-molecule junctions.

Nature communications

Mitchell AK, Pedersen KGL, Hedegård P, Paaske J.
PMID: 28492236
Nat Commun. 2017 May 11;8:15210. doi: 10.1038/ncomms15210.

Molecular electronics offers unique scientific and technological possibilities, resulting from both the nanometre scale of the devices and their reproducible chemical complexity. Two fundamental yet different effects, with no classical analogue, have been demonstrated experimentally in single-molecule junctions: quantum...

Depressive symptoms and deliberate self-harm in a community sample of adolescents: a prospective study.

Depression research and treatment

Lundh LG, Wångby-Lundh M, Paaske M, Ingesson S, Bjärehed J.
PMID: 21234107
Depress Res Treat. 2011;2011:935871. doi: 10.1155/2011/935871. Epub 2010 Dec 27.

The associations between depressive symptoms and deliberate self-harm were studied by means of a 2-wave longitudinal design in a community sample of 1052 young adolescents, with longitudinal data for 83.6% of the sample. Evidence was found for a bidirectional...

Transconductance of a double quantum dot system in the Kondo regime.

Physical review letters

Koerting V, Wölfle P, Paaske J.
PMID: 17678313
Phys Rev Lett. 2007 Jul 20;99(3):036807. doi: 10.1103/PhysRevLett.99.036807. Epub 2007 Jul 20.

We consider a lateral double-dot system in the Coulomb blockade regime with a single spin-1/2 on each dot, mutually coupled by an antiferromagnetic exchange interaction. Each of the two dots is contacted by two leads. We demonstrate that the...

Kondo-enhanced Andreev tunneling in InAs nanowire quantum dots.

Physical review letters

Sand-Jespersen T, Paaske J, Andersen BM, Grove-Rasmussen K, Jørgensen HI, Aagesen M, Sørensen CB, Lindelof PE, Flensberg K, Nygård J.
PMID: 17930535
Phys Rev Lett. 2007 Sep 21;99(12):126603. doi: 10.1103/PhysRevLett.99.126603. Epub 2007 Sep 19.

We report measurements of the nonlinear conductance of InAs nanowire quantum dots coupled to superconducting leads. We observe a clear alternation between odd and even occupation of the dot, with subgap peaks at |V(sd)| = Delta/e markedly stronger (weaker)...

Optimal (2)H rf Pulses and (2)H-(13)C Cross-Polarization Methods for Solid-State (2)H MAS NMR of Perdeuterated Proteins.

The journal of physical chemistry letters

Wei D, Akbey Ü, Paaske B, Oschkinat H, Reif B, Bjerring M, Nielsen NC.
PMID: 26295423
J Phys Chem Lett. 2011 Jun 02;2(11):1289-94. doi: 10.1021/jz200511b. Epub 2011 May 12.

We present a novel concept for rf pulses and optimal control designed cross-polarization experiments for quadrupolar nuclei. The methods are demonstrated for (2)H CP-MAS and (2)H multiple-pulse NMR of perdeuterated proteins, for which sensitivity enhancements up to an order...

Ground-State Spin Blockade in a Single-Molecule Junction.

Physical review letters

de Bruijckere J, Gehring P, Palacios-Corella M, Clemente-León M, Coronado E, Paaske J, Hedegård P, van der Zant HSJ.
PMID: 31144938
Phys Rev Lett. 2019 May 17;122(19):197701. doi: 10.1103/PhysRevLett.122.197701.

It is known that the quantum mechanical ground state of a nanoscale junction has a significant impact on its electrical transport properties. This becomes particularly important in transistors consisting of a single molecule. Because of strong electron-electron interactions and...

Current-Induced Gap Opening in Interacting Topological Insulator Surfaces.

Physical review letters

Balram AC, Flensberg K, Paaske J, Rudner MS.
PMID: 31922820
Phys Rev Lett. 2019 Dec 13;123(24):246803. doi: 10.1103/PhysRevLett.123.246803.

Two-dimensional topological insulators (TIs) host gapless helical edge states that are predicted to support a quantized two-terminal conductance. Quantization is protected by time-reversal symmetry, which forbids elastic backscattering. Paradoxically, the current-carrying state itself breaks the time-reversal symmetry that protects...

Showing 1 to 12 of 28 entries