Статья

A Four Unit Cell Periodic Pattern of Quasi-Particle States Surrounding Vortex Cores in Bi 2 Sr 2 CaCu 2 O 8+δ

Jennifer E. HoffmanDepartment of Physics, University of California, Berkeley, CA 94720–7300, USAEric HudsonDepartment of Physics, University of California, Berkeley, CA 94720–7300, USAKyle M. LangDepartment of Physics, University of California, Berkeley, CA 94720–7300, USAVidya MadhavanDepartment of Physics, University of California, Berkeley, CA 94720–7300, USAHiroshi EisakiDepartment of Superconductivity, University of Tokyo, Tokyo 113-8656, JapanS. UchidaDepartment of Superconductivity, University of Tokyo, Tokyo 113-8656, JapanJ. C. DavisDepartment of Physics, University of California, Berkeley, CA 94720–7300, USA

2002en

ABI

Аннотация

Scanning tunneling microscopy is used to image the additional quasi-particle states generated by quantized vortices in the high critical temperature superconductor Bi2Sr2CaCu2O8+delta. They exhibit a copper-oxygen bond-oriented "checkerboard" pattern, with four unit cell (4a0) periodicity and a approximately 30 angstrom decay length. These electronic modulations may be related to the magnetic field-induced, 8a0 periodic, spin density modulations with decay length of approximately 70 angstroms recently discovered in La1.84Sr0.16CuO4. The proposed explanation is a spin density wave localized surrounding each vortex core. General theoretical principles predict that, in the cuprates, a localized spin modulation of wavelength lambda should be associated with a corresponding electronic modulation of wavelength lambda/2, in good agreement with our observations.

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Идентификаторы

DOI: 10.1126/science.1066974

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar

A Four Unit Cell Periodic Pattern of Quasi-Particle States Surrounding Vortex Cores in Bi <sub>2</sub> Sr <sub>2</sub> CaCu <sub>2</sub> O <sub>8+δ</sub>

Аннотация

Идентификаторы

Цитирования и источники