期刊
NATURE COMMUNICATIONS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms10897
关键词
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资金
- ARO's atomtronics MURI
- AFOSR's Quantum Matter MURI
- NIST
- NSF through the PFC at the JQI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1430094] Funding Source: National Science Foundation
Phases of matter are characterized by order parameters describing the type and degree of order in a system. Here we experimentally explore the magnetic phases present in a near-zero temperature spin-1 spin-orbit-coupled atomic Bose gas and the quantum phase transitions between these phases. We observe ferromagnetic and unpolarized phases, which are stabilized by spin-orbit coupling's explicit locking between spin and motion. These phases are separated by a critical curve containing both first-and second-order transitions joined at a tricritical point. The first-order transition, with observed width as small as h x 4 Hz, gives rise to long-lived metastable states. These measurements are all in agreement with theory.
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