Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Anirudh Chandrasekaran"'
Autor:
Anirudh Chandrasekaran, Luke C. Rhodes, Edgar Abarca Morales, Carolina A. Marques, Phil D. C. King, Peter Wahl, Joseph J. Betouras
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The properties of correlated electron materials are often intricately linked to Van Hove singularities (VHS) in the vicinity of the Fermi energy. The class of these VHS is of great importance, with higher-order ones—with power-law divergen
Externí odkaz:
https://doaj.org/article/ff991cb7cfdb44e49455ba2fb6dcf44f
Publikováno v:
Advanced Physics Research, Vol 2, Iss 5, Pp n/a-n/a (2023)
Abstract A practical method is presented to detect, diagnose, and engineer higher order Van Hove singularities in multiband systems, with no restrictions on the number of bands or hopping terms. The method allows us to directly compute the Taylor exp
Externí odkaz:
https://doaj.org/article/67a580a2144d48e4a28b8e4a35d3a879
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013355 (2020)
We classify all possible singularities in the electronic dispersion of two-dimensional systems that occur when the Fermi surface changes topology, using catastrophe theory. For systems with up to seven control parameters (i.e., pressure, strain, bias
Externí odkaz:
https://doaj.org/article/8778e6aedaf04e4fbac907159a67ca30
Autor:
Ömer M. Aksoy, Anirudh Chandrasekaran, Apoorv Tiwari, Titus Neupert, Claudio Chamon, Christopher Mudry
Fermi surfaces can undergo sharp transitions under smooth changes of parameters. Such transitions can have a topological character, as is the case when a higher-order singularity, one that requires cubic or higher-order terms to describe the electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c455fb1d5cb8e5c6f658603a3bc17b0a
http://arxiv.org/abs/2302.04877
http://arxiv.org/abs/2302.04877
We present a practical method to detect, diagnose and engineer higher order Van Hove singularities in multiband systems, with no restrictions on the number of bands and hopping terms. The method allows us to directly compute the Taylor expansion of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78c39c67a326d9d78d51184e6dd38686
http://arxiv.org/abs/2207.06099
http://arxiv.org/abs/2207.06099
We study systems with energy bands in two dimensions, hosting higher order Van Hove singularities (HOVHS) in the presence of disorder, using standard diagrammatic techniques for impurity averaging. In the clean limit, such singularities cause power-l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65ce29e25d7b202d76dd0b2bed71b622
Publikováno v:
Physical Review Research. 2
We classify all possible singularities in the electronic dispersion of two-dimensional systems that occur when the Fermi surface changes topology, using catastrophe theory. For systems with up to seven control parameters (i.e., pressure, strain, bias
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d154d1d305f66af28e391b1f108ce29c
https://doi.org/10.1103/physrevresearch.2.013355
https://doi.org/10.1103/physrevresearch.2.013355