Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 033045 |
| Seiten (von - bis) | 1-8 |
| Seitenumfang | 8 |
| Fachzeitschrift | New Journal of Physics |
| Jahrgang | 17 |
| Publikationsstatus | Veröffentlicht - 31 März 2015 |
Abstract
We theoretically explore atomic Bose - Einstein condensates (BECs) subject to position-dependent spin-orbit coupling (SOC). This SOC can be produced by cyclically laser coupling four internal atomic ground (or metastable) states in an environment where the detuning from resonance depends on position. The resulting spin-orbit coupled BEC (SOBEC) phase separates into domains, each of which contain density modulations - stripes - aligned either along the x or y direction. In each domain, the stripe orientation is determined by the sign of the local detuning. When these stripes have mismatched spatial periods along domain boundaries, non-trivial topological spin textures form at the interface, including skyrmions-like spin vortices and anti-vortices. In contrast to vortices present in conventional rotating BECs, these spin-vortices are stable topological defects that are not present in the corresponding homogenous stripe-phase SOBECs.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: New Journal of Physics, Jahrgang 17, 033045, 31.03.2015, S. 1-8.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Position-dependent spin-orbit coupling for ultracold atoms
AU - Su, S. W.
AU - Gou, S. C.
AU - Liu, I. K.
AU - Spielman, I. B.
AU - Santos, Luis
AU - Acus, A.
AU - Mekys, A.
AU - Ruseckas, J.
AU - Juzeliunas, G.
PY - 2015/3/31
Y1 - 2015/3/31
N2 - We theoretically explore atomic Bose - Einstein condensates (BECs) subject to position-dependent spin-orbit coupling (SOC). This SOC can be produced by cyclically laser coupling four internal atomic ground (or metastable) states in an environment where the detuning from resonance depends on position. The resulting spin-orbit coupled BEC (SOBEC) phase separates into domains, each of which contain density modulations - stripes - aligned either along the x or y direction. In each domain, the stripe orientation is determined by the sign of the local detuning. When these stripes have mismatched spatial periods along domain boundaries, non-trivial topological spin textures form at the interface, including skyrmions-like spin vortices and anti-vortices. In contrast to vortices present in conventional rotating BECs, these spin-vortices are stable topological defects that are not present in the corresponding homogenous stripe-phase SOBECs.
AB - We theoretically explore atomic Bose - Einstein condensates (BECs) subject to position-dependent spin-orbit coupling (SOC). This SOC can be produced by cyclically laser coupling four internal atomic ground (or metastable) states in an environment where the detuning from resonance depends on position. The resulting spin-orbit coupled BEC (SOBEC) phase separates into domains, each of which contain density modulations - stripes - aligned either along the x or y direction. In each domain, the stripe orientation is determined by the sign of the local detuning. When these stripes have mismatched spatial periods along domain boundaries, non-trivial topological spin textures form at the interface, including skyrmions-like spin vortices and anti-vortices. In contrast to vortices present in conventional rotating BECs, these spin-vortices are stable topological defects that are not present in the corresponding homogenous stripe-phase SOBECs.
KW - Bose-Einstein condesate
KW - Frustration
KW - Spin-orbit coupling
KW - Stripe
KW - Vortex
UR - http://www.scopus.com/inward/record.url?scp=84926476105&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/17/3/033045
DO - 10.1088/1367-2630/17/3/033045
M3 - Article
AN - SCOPUS:84926476105
VL - 17
SP - 1
EP - 8
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
M1 - 033045
ER -