TY - JOUR
T1 - Magnetic quantum oscillations in YBa2Cu3O6.61 and YBa2Cu3O6.69 in fields of up to 85 T
T2 - Patching the hole in the roof of the superconducting dome
AU - Singleton, John
AU - De La Cruz, Clarina
AU - McDonald, R. D.
AU - Li, Shiliang
AU - Altarawneh, Moaz
AU - Goddard, Paul
AU - Franke, Isabel
AU - Rickel, Dwight
AU - Mielke, C. H.
AU - Yao, Xin
AU - Dai, Pengcheng
PY - 2010/2/25
Y1 - 2010/2/25
N2 - We measure magnetic quantum oscillations in the underdoped cuprates YBa2Cu3O6+x with x=0.61, 0.69, using fields of up to 85 T. The quantum-oscillation frequencies and effective masses obtained suggest that the Fermi energy in the cuprates has a maximum at hole doping ≈ 0.11-0.12. On either side, the effective mass may diverge, possibly due to phase transitions associated with the T=0 limit of the metal-insulator crossover (low-p side), and the postulated topological transition from small to large Fermi surface close to optimal doping (high p side).
AB - We measure magnetic quantum oscillations in the underdoped cuprates YBa2Cu3O6+x with x=0.61, 0.69, using fields of up to 85 T. The quantum-oscillation frequencies and effective masses obtained suggest that the Fermi energy in the cuprates has a maximum at hole doping ≈ 0.11-0.12. On either side, the effective mass may diverge, possibly due to phase transitions associated with the T=0 limit of the metal-insulator crossover (low-p side), and the postulated topological transition from small to large Fermi surface close to optimal doping (high p side).
UR - https://www.scopus.com/pages/publications/77649102958
U2 - 10.1103/PhysRevLett.104.086403
DO - 10.1103/PhysRevLett.104.086403
M3 - Article
AN - SCOPUS:77649102958
SN - 0031-9007
VL - 104
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 086403
ER -