57 citations · 299 across the 19 of their papers we have counts for
19 papers
Detection of spin- and valley-polarized states in van der Waals materials via thermoelectric and non-reciprocal transport
Oladunjoye A. Awoga, Pauli Virtanen, Tero T. Heikkilä +1
We predict thermoelectric and current rectification effects in hybrid junctions formed by Ising superconductors and materials hosting valley-polarized states. Both effects originat…
Josephson anomalous vortices
Dan Crawford, Stefan Ilić, Pauli Virtanen +1
We show that vortices with circulating current, related with odd-frequency triplet pairing, appear in Josephson junctions where the barrier is a weak ferromagnet with strong spin-o…
Quantum Geometric Helical Superconductivity
Aaron Dunbrack, Pauli Virtanen, Tero T. Heikkilä
Several physical phenomena in superconductors, such as helical superconductivity and the diode effect, rely on breaking time-reversal symmetry. This symmetry-breaking is usually ac…
Superconducting diode effect in diffusive superconductors and Josephson junctions with Rashba spin-orbit coupling
Stefan Ilic, Pauli Virtanen, Daniel Crawford +2
We characterize the superconducting diode effect (SDE) in two-dimensional diffusive structures with Rashba spin-orbit coupling using the quasiclassical formalism. We consider both…
Superconducting Spintronic Heat Engine
Clodoaldo I. L. de Araujo, Pauli Virtanen, Maria Spies +7
Heat engines are key devices that convert thermal energy into usable energy. Strong thermoelectricity, at the basis of electrical heat engines, is present in superconducting spin t…
Phase-dependent microwave response of a graphene Josephson junction
Roy Haller, Gergő Fülöp, David Indolese +10
Gate-tunable Josephson junctions embedded in a microwave environment provide a promising platform to in-situ engineer and optimize novel superconducting quantum circuits. The key q…
Spectral representation of the heat current in a driven Josephson junction
P. Virtanen, P. Solinas, F. Giazotto
We discuss thermal transport through a Josephson junction in a time-dependent situation. We write the spectral representation of the heat current pumped by a generic drive. This en…
Spin pumping and torque statistics in the quantum noise limit
P. Virtanen, T. T. Heikkilä
We analyze the statistics of charge and energy currents and spin torque in a metallic nanomagnet coupled to a large magnetic metal via a tunnel contact. We derive a Keldysh action…
Josephson Quantum Heat Engine
G. Marchegiani, P. Virtanen, F. Giazotto +1
The design of a mesoscopic self-oscillating heat engine that works thanks to purely quantum effects is presented. The proposed scheme is amenable to experimental implementation wit…
Stimulated quasiparticles in spin-split superconductors
P. Virtanen, T. T. Heikkilä, F. S. Bergeret
In superconductors spin-split by an exchange field, thermal effects are coupled to spin transport. We show how an oscillating electromagnetic field in such systems creates spin imb…
Thermal transport through ac-driven transparent Josephson weak links
P. Virtanen, F. Giazotto
We discuss how phase coherence manifests in the heat transport through superconducting single and multichannel Josephson junctions in time dependent situations. We consider the hea…
Fluctuation of heat current in Josephson junctions
P. Virtanen, F. Giazotto
We discuss the statistics of heat current between two superconductors at different temperatures connected by a generic weak link. As the electronic heat in superconductors is carri…
Absorption of heat into a superconductor-normal metal-superconductor junction from a fluctuating environment
Juha Voutilainen, Pauli Virtanen, Tero T. Heikkilä
We study a diffusive superconductor-normal metal-superconductor junction in an environment with intrinsic incoherent fluctuations which couple to the junction through an electromag…
Thermal fluctuations and flux-tunable barrier in proximity Josephson junctions
Jian Wei, P. Cadden-Zimansky, P. Virtanen +1
The effect of thermal fluctuations in Josephson junctions is usually analysed using the Ambegaokar-Halperin (AH) theory in the context of thermal activation. "Enhanced" fluctuation…
Supercurrent and Andreev bound state dynamics in superconducting quantum point contacts under microwave irradiation
F. S. Bergeret, P. Virtanen, A. Ozaeta +2
We present here an extensive theoretical analysis of the supercurrent of a superconducting point contact of arbitrary transparency in the presence of a microwave field. Our study i…
Theory of microwave-assisted supercurrent in quantum point contacts
F. S. Bergeret, P. Virtanen, T. T. Heikkilä +1
We present a microscopic theory of the effect of a microwave field on the supercurrent through a quantum point contact of arbitrary transmission. Our theory predicts that: (i) for…
Microwave response of an NS ring coupled to a superconducting resonator
F. Chiodi, M. Ferrier, K. Tikhonov +5
A long phase coherent normal (N) wire between superconductors (S) is characterized by a dense phase dependent Andreev spectrum . We probe this spectrum in a high frequency phase bi…
Thermal conductance of a proximity superconductor
J. T. Peltonen, P. Virtanen, M. Meschke +3
We study heat transport in hybrid normal metal - superconductor - normal metal (NSN) structures. We find the thermal conductance of a short superconducting wire to be strongly enha…
Local and Non-local Shot Noise in Multiwalled Carbon Nanotubes
T. Tsuneta, P. Virtanen, F. Wu +3
We have investigated shot noise in multiterminal, diffusive multiwalled carbon nanotubes (MWNTs) at 4.2 K over the frequency f = 600 - 850 MHz. Quantitative comparison of our data…