51 citations · 308 across the 16 of their papers we have counts for
16 papers
Gate-tunable nonreciprocal thermoelectric effects on the surface states of topological insulators
Phillip Mercebach, Sun-Yong Hwang, Bo Lu +3
Thermoelectric devices at the nanoscale offer promising routes for on-chip refrigeration and waste-heat recovery, yet most semiconductor-based implementations suffer from limited t…
Phase-controlled heat modulation with Aharonov-Bohm interferometers
Sun-Yong Hwang, Björn Sothmann, Rosa López
A heat modulator is proposed based on a voltage-biased Aharonov-Bohm interferometer. Once an electrical bias is applied, Peltier effects give rise to a flow of heat that can be mod…
Superconductor-quantum dot hybrid coolers
Sun-Yong Hwang, Björn Sothmann, David Sanchez
We propose a refrigeration scheme in a mesoscopic superconductor-quantum dot hybrid device. The setup can significantly cool down a normal metal coupled to the device by applying a…
On-demand thermoelectric generation of equal-spin Cooper pairs
Felix Keidel, Sun-Yong Hwang, Björn Trauzettel +2
Superconducting spintronics is based on the creation of spin-triplet Cooper pairs in ferromagnet-superconductor (F-S) hybrid junctions. Previous proposals to manipulate spin-polari…
Phase-coherent caloritronics with ordinary and topological Josephson junctions
Sun-Yong Hwang, Björn Sothmann
We provide a brief and comprehensive overview over recent developments in the field of phase-coherent caloritronics in ordinary and topological Josephson junctions. We start from t…
Phase-coherent heat circulator based on multi-terminal Josephson junctions
Sun-Yong Hwang, Francesco Giazotto, Björn Sothmann
We theoretically propose a phase-coherent thermal circulator based on ballistic multiterminal Josephson junctions. The breaking of time-reversal symmetry by either a magnetic flux…
Nonlinear heat transport in ferromagnetic-quantum dot-superconducting systems
Sun-Yong Hwang, David Sanchez
We analyze the heat current traversing a quantum dot sandwiched between a ferromagnetic and a superconducting electrode. The heat flow generated in response to a voltage bias prese…
Odd-frequency Superconductivity Revealed by Thermopower
Sun-Yong Hwang, Pablo Burset, Björn Sothmann
Superconductivity is characterized by a nonvanishing superconducting pair amplitude. It has a definite symmetry in spin, momentum and frequency (time). While the spin and momentum…
Nonlinear electric and thermoelectric Andreev transport through a hybrid quantum dot coupled to ferromagnetic and superconducting leads
Sun-Yong Hwang, David Sanchez, Rosa Lopez
We discuss the nonlinear Andreev current of an interacting quantum dot coupled to spin-polarized and superconducting reservoirs when voltage and temperature biases are applied acro…
A hybrid superconducting quantum dot acting as an efficient charge and spin Seebeck diode
Sun-Yong Hwang, David Sanchez, Rosa Lopez
We propose a highly efficient thermoelectric diode device built from the coupling of a quantum dot with a normal or ferromagnetic electrode and a superconducting reservoir. The cur…
Large thermoelectric power and figure of merit in a ferromagnetic-quantum dot-superconducting device
Sun-Yong Hwang, Rosa Lopez, David Sanchez
We investigate the thermoelectric properties of a quantum dot coupled to ferromagnetic and superconducting electrodes. The combination of spin polarized tunneling at the ferromagne…
Thermoelectric effects in quantum Hall systems beyond linear response
Rosa Lopez, Sun-Yong Hwang, David Sanchez
We consider a quantum Hall system with an antidot acting as an energy dependent scatterer. In the purely charge case, we find deviations from the Wiedemann-Franz law that take plac…
Cross thermoelectric coupling in normal-superconductor quantum dots
Sun-Yong Hwang, Rosa Lopez, David Sanchez
We discuss the nonlinear current of an interacting quantum dot coupled to normal and superconducting reservoirs with applied voltage and temperature differences. Due to the particl…
Nonlinear spin-thermoelectric transport in two-dimensional topological insulators
Sun-Yong Hwang, Rosa Lopez, Minchul Lee +1
We consider spin-polarized transport in a quantum spin Hall antidot system coupled to normal leads. Due to the helical nature of the conducting edge states, the screening potential…
Proposal for a local heating driven spin current generator
Sun-Yong Hwang, Jong Soo Lim, Rosa Lopez +2
We propose a two-terminal spin-orbit interferometer with a hot molecule inserted in one of its arms to generate pure spin currents. Local heating is achieved by coupling the vibrat…
Magnetic-field asymmetry of nonlinear thermoelectric and heat transport
Sun-Yong Hwang, David Sánchez, Minchul Lee +1
Nonlinear transport coefficients do not obey, in general, reciprocity relations. We here discuss the magnetic-field asymmetries that arise in thermoelectric and heat transport of m…