Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Harley D. Scammell"'
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Recent experiments have found a two-fold van Hove singularity (TvHS) in the kagome metal CsV3Sb5. Here, the authors use perturbative renormalization group calculations to find that the leading instability in a model of TvHS is a chiral condensate of
Externí odkaz:
https://doaj.org/article/89a72a28d0484e609b03622abc537994
Autor:
Harley D. Scammell, Oleg P. Sushkov
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043176 (2023)
We consider suspended bilayer graphene under applied perpendicular electric bias field that is known to generate a single particle gap 2Δ and a related electric polarization P. We argue that the bias also drives a quantum phase transition from band
Externí odkaz:
https://doaj.org/article/d37897fe387b43328fa5f6de3231b2f9
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043155 (2020)
Artificial lattices have served as a platform to study the physics of unconventional superconductivity. We study semiconductor artificial graphene—a honeycomb superlattice imposed on a semiconductor heterostructure—which hosts the Dirac physics o
Externí odkaz:
https://doaj.org/article/6e359e9c78c84760880802c40f9d0590
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033390 (2020)
We consider 2+1-dimensional conformal gauge theories coupled to additional degrees of freedom which induce a spatially local but long-range in time 1/(τ−τ^{′})^{2} interaction between gauge-neutral local operators. Such theories have been argue
Externí odkaz:
https://doaj.org/article/37ed3e3135b0488f92b4a6203f16d640
Recent experiments on kagome metals AV3Sb5 (A=K,Rb,Cs) identify twofold van Hove singularities (TvHS) with opposite concavity near the Fermi energy, generating two approximately hexagonal Fermi surfaces – one electron-like and the other hole-like.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab471767c2a37618822d953ef669182b
http://arxiv.org/abs/2201.02643
http://arxiv.org/abs/2201.02643
We demonstrate the existence of novel interaction effects in hole-doped semiconductor quantum wells which are connected to dramatic changes in the Fermi surface geometry occurring upon variation of the doping. We present band structure calculations s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b35c4524f3c2374c1ec260f32b6c3e4
https://doi.org/10.1103/physrevb.105.115302
https://doi.org/10.1103/physrevb.105.115302
Publikováno v:
Li, T, Geier, M, Ingham, J & Scammell, H D 2022, ' Higher-order topological superconductivity from repulsive interactions in kagome and honeycomb systems ', 2D Materials, vol. 9, no. 1, 015031 . https://doi.org/10.1088/2053-1583/ac4060
We discuss a pairing mechanism in interacting two-dimensional multipartite lattices that intrinsically leads to a second order topological superconducting state with a spatially modulated gap. When the chemical potential is close to Dirac points, opp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a55d0eb831cb1be17884f369e2d1565
Autor:
Jiang-Xiazi Lin, Phum Siriviboon, Harley D. Scammell, Song Liu, Daniel Rhodes, K. Watanabe, T. Taniguchi, James Hone, Mathias S. Scheurer, J.I.A. Li
The critical current of a superconductor can be different for opposite directions of current flow when both time-reversal and inversion symmetry are broken. %When time-reversal and inversion symmetry are simultaneously broken, the critical current of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4941498e293ea9f0545fe63562053797
We consider 2+1 dimensional conformal gauge theories coupled to additional degrees of freedom which induce a spatially local but long-range in time $1/(\tau-\tau')^2$ interaction between gauge-neutral local operators. Such theories have been argued t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94d335679c8d5b0f2d5966aa37dbc472
http://arxiv.org/abs/2006.01834
http://arxiv.org/abs/2006.01834
The transition between the N\'{e}el antiferromagnet and the valence-bond solid state in two dimensions has become a paradigmatic example of deconfined quantum criticality, a non-Landau transition characterized by fractionalized excitations (spinons).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b3c88d952cd9b19216bebda7c56cc51
http://arxiv.org/abs/1909.01594
http://arxiv.org/abs/1909.01594