The topological transition from a Corbino to Hall bar geometry

1996 ◽  
Vol 20 (4) ◽  
pp. 651-656 ◽  
Author(s):  
A.S. Sachrajda ◽  
Y. Feng ◽  
R.P. Taylor ◽  
R. Newbury ◽  
P.T. Coleridge ◽  
...  
Keyword(s):  
Topological Transition

scholarly journals Phase Signature of Topological Transition in Josephson Junctions

2021 ◽  
Vol 126 (3) ◽  
Author(s):  
Matthieu C. Dartiailh ◽  
William Mayer ◽  
Joseph Yuan ◽  
Kaushini S. Wickramasinghe ◽  
Alex Matos-Abiague ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Topological Transition

scholarly journals Enabling propagation of anisotropic polaritons along forbidden directions via a topological transition

2021 ◽  
Vol 7 (14) ◽  
pp. eabf2690
Author(s):  
J. Duan ◽  
G. Álvarez-Pérez ◽  
K. V. Voronin ◽  
I. Prieto ◽  
J. Taboada-Gutiérrez ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Silicon Carbide ◽  
Molybdenum Trioxide ◽  
Real Space ◽  
Negative Permittivity ◽  
Topological Transition ◽  
Α Phase ◽  
Direct Light ◽  
Gap Opening ◽  
Phonon Polaritons

Polaritons with directional in-plane propagation and ultralow losses in van der Waals (vdW) crystals promise unprecedented manipulation of light at the nanoscale. However, these polaritons present a crucial limitation: their directional propagation is intrinsically determined by the crystal structure of the host material, imposing forbidden directions of propagation. Here, we demonstrate that directional polaritons (in-plane hyperbolic phonon polaritons) in a vdW crystal (α-phase molybdenum trioxide) can be directed along forbidden directions by inducing an optical topological transition, which emerges when the slab is placed on a substrate with a given negative permittivity (4H–silicon carbide). By visualizing the transition in real space, we observe exotic polaritonic states between mutually orthogonal hyperbolic regimes, which unveil the topological origin of the transition: a gap opening in the dispersion. This work provides insights into optical topological transitions in vdW crystals, which introduce a route to direct light at the nanoscale.

Topological Transition Enabled by Surface Modification of Photonic Crystals

ACS Photonics ◽  
2021 ◽  
Author(s):  
Yanxin Lu ◽  
Qishan Liu ◽  
Yihang Chen ◽  
Zefeng Chen ◽  
Dan-Wei Zhang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Photonic Crystals ◽  
Topological Transition

scholarly journals Electronic Topological Transition in Ag2Te at High-pressure

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Yuhang Zhang ◽  
Yan Li ◽  
Yanmei Ma ◽  
Yuwei Li ◽  
Guanghui Li ◽  
...  
Keyword(s):  
High Pressure ◽  
Topological Transition ◽  
Electronic Topological Transition

Nature of electronic topological transition and superconductivity in bismuth under high pressure from ab initio random structure searching

2021 ◽  
Vol 200 ◽  
pp. 110806
Author(s):  
Wanaruk Chaimayo ◽  
Prutthipong Tsuppayakorn-aek ◽  
Prayoonsak Pluengphon ◽  
Komsilp Kotmool ◽  
Teerachote Pakornchote ◽  
...  
Keyword(s):  
High Pressure ◽  
Ab Initio ◽  
Random Structure ◽  
Topological Transition ◽  
Electronic Topological Transition

scholarly journals Topological transition between competing orders in quantum spin chains

2018 ◽  
Vol 98 (18) ◽  
Author(s):  
Shintaro Takayoshi ◽  
Shunsuke C. Furuya ◽  
Thierry Giamarchi
Keyword(s):  
Quantum Spin ◽  
Spin Chains ◽  
Quantum Spin Chains ◽  
Topological Transition ◽  
Competing Orders
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