Violation of the Onsager relation for quantum oscillations in superconductors
Author(s)Chen, Kuang-Ting; Lee, Patrick A.
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We numerically study the quantum oscillations in superconducting vortex-mixed states with d-wave pairing. We show that in the parameter range of an underdoped cuprate superconductor, the commonly held assumption that the period is given by the underlying Fermi-surface area using the Onsager relation becomes invalid. Using this result, we conclude that the interpretation of the recent experimental data on YBCO as a signal of an underlying Fermi surface with four hole pockets created by a (π,π) folding cannot be ruled out.
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review B
American Physical Society
Chen, Kuang-Ting , and Patrick A. Lee. “Violation of the Onsager relation for quantum oscillations in superconductors.” Physical Review B 79.18 (2009): 180510. © 2009 The American Physical Society
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