Nanoscience – Page 168 – Kavli Institute Pre-Print Publications

Pervasive beyond room-temperature ferromagnetism in a doped van der Waals magnet: Ni doped Fe$_5$GeTe$_2$ with $T_{text{C}}$ up to 478 K

Posted by klaurent February 28, 2022Cornell

Kavli Affiliate: David A. Muller | First 5 Authors: Xiang Chen, Yu-Tsun Shao, Rui Chen, Sandhya Susarla, Tom Hogan | Summary: The existence of long range magnetic order in low dimensional magnetic systems, such as the quasi-two-dimensional (2D) van der Waals (vdW) magnets, has attracted intensive studies of new physical phenomena. The vdW Fe$_N$GeTe$_2$ ($N$ […]

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Tunable crossed Andreev reflection and elastic co-tunneling between quantum dots

Posted by klaurent February 28, 2022Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: Chun-Xiao Liu, Guanzhong Wang, Tom Dvir, Michael Wimmer, | Summary: The mesoscopic system of two separate quantum dots connected by a common superconductor has been studied extensively for Cooper pair splitting, and is predicted to be the building block of an emulated Kitaev chain. The physical mechanisms […]

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Tunable Cooper pair splitting via Andreev bound states

Posted by klaurent February 28, 2022Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: Chun-Xiao Liu, Guanzhong Wang, Tom Dvir, Michael Wimmer, | Summary: Two spatially separated quantum dots connected by a common superconductor has been studied extensively for Cooper pair splitting, and is predicted to be the building block of an emulated Kitaev chain. The effective couplings between quantum dots […]

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Tunable superconducting coupling of quantum dots via Andreev bound states

Posted by klaurent February 28, 2022Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: Chun-Xiao Liu, Guanzhong Wang, Tom Dvir, Michael Wimmer, | Summary: Semiconductor quantum dots have proven to be a useful platform for quantum simulation in the solid state. However, implementing a superconducting coupling between quantum dots mediated by a Cooper pair has so far suffered from limited tunability […]

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Tunable superconducting coupling of quantum dots via Andreev bound states in semiconductor-superconductor nanowires

Posted by klaurent February 28, 2022Delft

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Tunable superconducting coupling of quantum dots via Andreev bound states in semiconductor-superconductor nanowires

Posted by klaurent February 28, 2022Delft

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Universal scaling for disordered viscoelastic matter II: Collapses, global behavior and spatio-temporal properties

Posted by klaurent February 28, 2022March 21, 2022Cornell

Kavli Affiliate: Itai Cohen | First 5 Authors: Danilo B. Liarte, Stephen J. Thornton, Eric Schwen, Itai Cohen, Debanjan Chowdhury | Summary: Disordered viscoelastic materials are ubiquitous and exhibit fascinating invariant scaling properties. In a companion article, we have presented comprehensive new results for the critical behavior of the dynamic susceptibility of disordered elastic systems […]

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A minimal one-dimensional model of “bad metal” behavior from fast particle-hole scattering

Posted by klaurent February 28, 2022March 21, 2022Berkeley

Kavli Affiliate: Joel E. Moore | First 5 Authors: Yan-Qi Wang, Roman Rausch, Christoph Karrasch, Joel E. Moore, | Summary: A strongly interacting plasma of linearly dispersing electron and hole excitations in two spatial dimensions (2D), also known as a Dirac fluid, can be captured by relativistic hydrodynamics and shares many universal features with other […]

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Context-Hierarchy Inverse Reinforcement Learning

Posted by klaurent February 25, 2022March 7, 2022Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Wei Gao, David Hsu, Wee Sun Lee, , | Summary: An inverse reinforcement learning (IRL) agent learns to act intelligently by observing expert demonstrations and learning the expert’s underlying reward function. Although learning the reward functions from demonstrations has achieved great success in various tasks, several other […]

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Spectroscopy Signatures of Electron Correlations in a Trilayer Graphene/hBN Moiré Superlattice

Posted by klaurent February 24, 2022Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Jixiang Yang, Guorui Chen, Tianyi Han, Qihang Zhang, Ya-Hui Zhang | Summary: ABC-stacked trilayer graphene/hBN moir’e superlattice (TLG/hBN) has emerged as a playground for correlated electron physics. We report spectroscopy measurements of dual-gated TLG/hBN using Fourier transformed infrared photocurrent spectroscopy. We observed a strong optical transition between […]

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