Observation of the Yamaji Effect in a Cuprate and FL* Theory of the Pseudogap

The cuprate pseudogap phase displays Fermi arc spectral weight in
photoemission, while recent magnetotransport observations present
compelling evidence for hole pockets. We model this by a

Fractionalized Fermi liquid (FL*), which was predicted to have hole
pockets of fractional area p/8 (where p is the doping), in agreement
with the recently observed Yamaji angle. Thermal fluctuations of a SU(2)
gauge theory of the background spin liquid of FL* lead the appearance of
Fermi arcs in photoemission, and conventional d-wave superconductivity
at low temperatures.