Phys. Rev. Lett. 98, 177004 (2007) [4 pages]Topological Transition in the Fermi Surface of Cuprate Superconductors in the Pseudogap RegimeReceived 4 August 2006; published 26 April 2007 The angle-resolved photoemission spectroscopy studies on cuprates in the pseudogap region reveal an extraordinary topological transition in which the ground state changes from one with a normal Fermi surface to one with four Fermi points. Such a state is not possible without some symmetry breaking, which allows interference between one-particle basis states that is normally forbidden. We also show that the experimental results are quantitatively given without any free parameters by a theory and discuss the implications of the results. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.177004
DOI:
10.1103/PhysRevLett.98.177004
PACS:
74.25.Jb, 74.20.−z, 74.72.−h
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.