期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 25, 页码 5763-5766出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.5763
关键词
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Interlayer tunneling resistivity is used to probe the low-energy density-of-states (DOS) depletion due to the pseudogap in the normal state of Bi(2)Sr(2)CaCU(2)Q(8+y) Measurements up to 60 T reveal that a field that restores DOS to its ungapped state shows strikingly different temperature and doping dependencies from the characteristic fields of the superconducting state. The pseudogap closing field and the pseudogap temperature T* evaluated independently are related through a simple Zeeman energy scaling. These. findings indicate a predominant role of spins over the orbital effects in the formation of the pseudogap.
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