Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Dong, Zhiyu"'
We demonstrate that in metals, both normal and superconducting, orbital currents present in the ground state when time reversal symmetry (TRS) is broken, generate spin chirality. Nonzero chirality can emerge in the absence of any spin-dependent inter
Externí odkaz:
http://arxiv.org/abs/2407.17433
Rhombohedral graphene multilayers host various broken-symmetry metallic phases as well as superconductors whose pairing mechanism and order parameter symmetry remain unsettled. Strikingly, experiments have revealed prominent new superconducting regio
Externí odkaz:
http://arxiv.org/abs/2406.17036
This paper aims to clarify the nature of a surprising ordered phase recently reported in biased Bernal bilayer graphene that occurs at the phase boundary between the isospin-polarized and unpolarized phases. Strong nonlinearity of transport at abnorm
Externí odkaz:
http://arxiv.org/abs/2404.18073
We explore numerically the intricate interplay between Berry phases in both real and momentum spaces within itinerant magnets. This interplay manifests as an emergent spin-orbit coupling, where charge carriers occupying a Berry-curved band generate a
Externí odkaz:
http://arxiv.org/abs/2404.00706
Autor:
Seiler, Anna M., Jacobsen, Nils, Statz, Martin, Fernandez, Noelia, Falorsi, Francesca, Watanabe, Kenji, Taniguchi, Takashi, Dong, Zhiyu, Levitov, Leonid S., Weitz, R. Thomas
Publikováno v:
Nature Communications volume 15, Article number: 3133 (2024)
Controlling the bandstructure of Dirac materials is of wide interest in current research but has remained an outstanding challenge for systems such as monolayer graphene. In contrast, Bernal bilayer graphene (BLG) offers a highly flexible platform fo
Externí odkaz:
http://arxiv.org/abs/2311.10816
Autor:
Dong, Zhiyu
Two-dimensional solids often exhibit carrier bands with Berry phase in 𝑘 space, resulting in carriers behaving like spinning objects and generating orbital magnetization in position space. This thesis explores the impact of orbital magnetization a
Externí odkaz:
https://hdl.handle.net/1721.1/152555
Autor:
Bocarsly, Matan, Uzan, Matan, Roy, Indranil, Grover, Sameer, Xiao, Jiewen, Dong, Zhiyu, Labendik, Mikhail, Uri, Aviram, Huber, Martin E., Myasoedov, Yuri, Watanabe, Kenji, Taniguchi, Takashi, Yan, Binghai, Levitov, Leonid S., Zeldov, Eli
Publikováno v:
Science 383, 42-48 (2024)
Quantum oscillations originating from the quantization of the electron cyclotron orbits provide ultrasensitive diagnostics of electron bands and interactions in novel materials. We report on the first direct-space nanoscale imaging of the thermodynam
Externí odkaz:
http://arxiv.org/abs/2310.20338
Autor:
Seiler, Anna M., Statz, Martin, Weimer, Isabell, Jacobsen, Nils, Watanabe, Kenji, Taniguchi, Takashi, Dong, Zhiyu, Levitov, Leonid S., Weitz, R. Thomas
Bernal bilayer graphene has recently been discovered to exhibit a wide range of unique ordered phases resulting from interaction-driven effects and encompassing spin and valley magnetism, correlated insulators, correlated metals, and superconductivit
Externí odkaz:
http://arxiv.org/abs/2308.00827
Spin excitations that soften near the onset of magnetic order have long been known to act as `paramagnon' pairing glue that can drive spin-triplet superconductivity. Recent findings of superconductivity in graphene bilayers and trilayers, occurring i
Externí odkaz:
http://arxiv.org/abs/2306.11005
Publikováno v:
Phys. Rev. Lett. 130, 206701 (2023)
We argue that spin and valley-polarized metallic phases recently observed in graphene bilayers and trilayers support chiral edge modes that allow spin waves to propagate ballistically along system boundaries without backscattering. The chiral edge be
Externí odkaz:
http://arxiv.org/abs/2305.12508