| dc.contributor |
Massachusetts Institute of Technology. Department of Physics |
|
| dc.creator |
Yuan, Noah F. Q. |
|
| dc.creator |
Fu, Liang |
|
| dc.date |
2020-06-15T20:40:31Z |
|
| dc.date |
2020-06-15T20:40:31Z |
|
| dc.date |
2020-03 |
|
| dc.date |
2019-10 |
|
| dc.date |
2020-03-23T14:18:00Z |
|
| dc.date.accessioned |
2023-03-01T08:01:53Z |
|
| dc.date.available |
2023-03-01T08:01:53Z |
|
| dc.identifier |
2469-9950 |
|
| dc.identifier |
2469-9969 |
|
| dc.identifier |
https://hdl.handle.net/1721.1/125812 |
|
| dc.identifier |
Yuan, Noah F. Q, and Liang Fu. "Classification of critical points in energy bands based on topology, scaling, and symmetry." Physical Review B, 101, 12 (March 2020): 125120. © 2020 American Physical Society |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/275908 |
|
| dc.description |
A critical point of the energy dispersion is the momentum where electron velocity vanishes. At the corresponding energy, the density of states (DOS) exhibits nonanalyticity such as divergence. Critical points can be first classified as ordinary and high-order ones, and the ordinary critical points have been studied thoroughly by Léon van Hove, whose DOS is particle-hole symmetric and logarithmically divergent. In this work, we describe and classify high-order critical points based on topology, scaling, and symmetry. We show that high-order critical points can have power-law-divergent DOS with particle-hole asymmetry, and can be realized at generic or symmetric momenta by tuning a few parameters such as twist angle, strain, pressure, and/or external fields. |
|
| dc.description |
DOE Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. de-sc0010526 |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
American Physical Society (APS) |
|
| dc.relation |
http://dx.doi.org/10.1103/PhysRevB.101.125120 |
|
| dc.relation |
Physical Review B |
|
| dc.rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. |
|
| dc.rights |
American Physical Society |
|
| dc.source |
American Physical Society |
|
| dc.title |
Classification of critical points in energy bands based on topology, scaling, and symmetry |
|
| dc.type |
Article |
|
| dc.type |
http://purl.org/eprint/type/JournalArticle |
|