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Vortex Dynamics Driven Transverse Transport in Superconducting Thin Films
Laxmipriya Nanda, Sohini Guin, Yasen Hou +7
The generation of transverse voltage in superconducting thin films carrying a longitudinal current has been recently related to demonstrate exotic, symmetry-breaking transport phen…
Magnetic exchange coupled nonreciprocal devices for cryogenic memory
Josep Ingla-Aynés, Lina Johnsen Kamra, Franklin Dai +5
As computing power demands continue to grow, superconducting electronics present an opportunity to reduce power consumption by increasing the energy efficiency of digital logic and…
Signatures of a Spin-Active Interface and Locally Enhanced Zeeman field in a Superconductor-Chiral Material Heterostructure
Cliff Chen, Jason Tran, Anthony McFadden +10
A localized Zeeman field, intensified at heterostructure interfaces, could play a crucial role in a broad area including spintronics and unconventional superconductors. Conventiona…
Highly Efficient Superconducting Diodes and Rectifiers for Quantum Circuitry
Josep Ingla-Aynés, Yasen Hou, Sarah Wang +4
Superconducting electronics is essential for energy-efficient quantum and classical high-end computing applications. Towards this goal, non-reciprocal superconducting circuit eleme…
Nonreciprocity of supercurrent along applied magnetic field
Filippo Gaggioli, Yasen Hou, Jagadeesh S. Moodera +1
Nonreciprocal current responses arise in a broad range of systems, from magnons and phonons to supercurrents, due to an interplay between spatial and temporal symmetry breakings. T…
Ubiquitous Superconducting Diode Effect in Superconductor Thin Films
Yasen Hou, Fabrizio Nichele, Hang Chi +13
The macroscopic coherence in superconductors supports dissipationless supercurrents which could play a central role in emerging quantum technologies. Accomplishing unequal supercur…
Superconducting spintronic tunnel diode
E. Strambini, M. Spies, N. Ligato +10
Diodes are key elements for electronics, optics, and detection. The search for a material combination providing the best performances for the required application is continuously o…
Interfacial control of vortex-limited critical current in type II superconductor films
Marius K. Hope, Morten Amundsen, Dhavala Suri +2
In a small subset of type II superconductor films, the critical current is determined by a weakened Bean-Livingston barrier posed by the film surfaces to vortex penetration into th…
Signatures of superconducting triplet pairing in Ni--Ga-bilayer junctions
Andreas Costa, Madison Sutula, Valeria Lauter +3
Ni-Ga bilayers are a versatile platform for exploring the competition between strongly antagonistic ferromagnetic and superconducting phases. We characterize the impact of this com…
Signature of a pair of Majorana zero modes in superconducting gold surface states
Sujit Manna, Peng Wei, Yingming Xie +3
Under certain conditions, a fermion in a superconductor can separate in space into two parts known as Majorana zero modes, which are immune to decoherence from local noise sources…
Charge transport through spin-polarized tunnel junction between two spin-split superconductors
Mikel Rouco, Subrata Chakraborty, Faluke Aikebaier +6
We investigate transport properties of junctions between two spin-split superconductors linked by a spin-polarized tunneling barrier. The spin-splitting fields in the superconducto…
Superconductivity in the surface state of noble metal gold and its Fermi level tuning by EuS dielectric
Peng Wei, Sujit Manna, Marius Eich +2
The induced superconductivity (SC) in a robust and scalable quantum material with strong Rashba spin-orbit coupling is particularly attractive for generating topological supercondu…
A superconducting absolute spin valve
G. De Simoni, E. Strambini, J. S. Moodera +2
A superconductor with a spin-split excitation spectrum behaves as an ideal ferromagnetic spin-injector in a tunneling junction. It was theoretical predicted that the combination of…
Revealing the magnetic proximity effect in EuS/Al bilayers through superconducting tunneling spectroscopy
E. Strambini, V. N. Golovach, G. De Simoni +3
A ferromagnetic insulator attached to a superconductor is known to induce an exchange splitting of the Bardeen-Cooper-Schrieffer (BCS) singularity by a magnitude proportional to th…
Direct imaging of electron transfer and its influence on superconducting pairing at FeSe/SrTiO3 interface
Weiwei Zhao, Mingda Li, Cui-Zu Chang +6
The exact mechanism responsible for the tenfold enhancement of superconducting transition temperature (Tc) in a monolayer iron selenide (FeSe) on SrTiO3(STO) substrate over that of…
Dumbbell Defects in FeSe Films: A Scanning Tunneling Microscopy and First-Principles Investigation
Dennis Huang, Tatiana A. Webb, Can-Li Song +4
The properties of iron-based superconductors (Fe-SCs) can be varied dramatically with the introduction of dopants and atomic defects. As a pressing example, FeSe, parent phase of t…
Induced superconductivity and engineered Josephson tunneling devices in epitaxial (111)-oriented gold/vanadium heterostructures
Peng Wei, Ferhat Katmis, Cui-Zu Chang +1
We report a unique experimental approach to create topological superconductors by inducing superconductivity into epitaxial metallic thin film with strong spin-orbit coupling. Util…
Bounds on Nanoscale Nematicity in Single-Layer FeSe/SrTiO
Dennis Huang, Tatiana A. Webb, Shiang Fang +5
We use scanning tunneling microscopy (STM) and quasiparticle interference (QPI) imaging to investigate the low-energy orbital texture of single-layer FeSe/SrTiO. We develop a $…
Revealing the Empty-State Electronic Structure of Single-Unit-Cell FeSe/SrTiO
Dennis Huang, Can-Li Song, Tatiana A. Webb +5
We use scanning tunneling spectroscopy to investigate the filled and empty electronic states of superconducting single-unit-cell FeSe deposited on SrTiO(001). We map the moment…
All Magnesium diboride Josephson Junctions with MgO and native oxide barriers
M. V. Costache, J. S. Moodera
We present results on all-MgB2 tunnel junctions, where the tunnel barrier is deposited MgO or native-oxide of base electrode. For the junctions with MgO, the hysteretic I-V curve r…