Lifshitz transition in underdoped cuprates | |
Article | |
关键词: T-C SUPERCONDUCTOR; QUANTUM CRITICAL-POINT; FERMI-SURFACE; VORTEX STATE; TEMPERATURE; OSCILLATIONS; LA2-XSRXCUO4; POCKETS; | |
DOI : 10.1103/PhysRevB.81.180513 | |
来源: SCIE |
【 摘 要 】
Recent studies show that quantum oscillations thought to be associated with a density wave reconstructed Fermi surface disappear at a critical value of the doping for YBa(2)Cu(3)O(6+y) and the cyclotron mass diverges as the critical value is approached from the high doping side. We argue that the phenomenon is due to a Lifshitz transition where the pockets giving rise to the quantum oscillations connect to form an open (quasi-one-dimensional) Fermi surface. The estimated critical doping is close to that found by experiment and the theory predicts a logarithmic divergence of the cyclotron mass with a coefficient comparable to that observed in experiment.
【 授权许可】
Free