Closing the Pseudogap by Zeeman Splitting in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O
Journal Article
·
· Physical Review Letters
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{sub 2}Sr {sub 2}CaCu{sub 2}O{sub 8+y} . Measurements up to 60T 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{sup (small star, filled)} 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.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204685
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 86; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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