Details
Original language | English |
---|---|
Article number | 8118 |
Journal | Nature Communications |
Volume | 6 |
Publication status | Published - 10 Sept 2015 |
Abstract
Quantum wires with spin-orbit coupling provide a unique opportunity to simultaneously control the coupling strength and the screened Coulomb interactions where new exotic phases of matter can be explored. Here we report on the observation of an exotic spin-orbit density wave in Pb-atomic wires on Si(557) surfaces by mapping out the evolution of the modulated spin-texture at various conditions with spin-and angle-resolved photoelectron spectroscopy. The results are independently quantified by surface transport measurements. The spin polarization, coherence length, spin dephasing rate and the associated quasiparticle gap decrease simultaneously as the screened Coulomb interaction decreases with increasing excess coverage, providing a new mechanism for generating and manipulating a spin-orbit entanglement effect via electronic interaction. Despite clear evidence of spontaneous spin-rotation symmetry breaking and modulation of spin-momentum structure as a function of excess coverage, the average spin polarization over the Brillouin zone vanishes, indicating that time-reversal symmetry is intact as theoretically predicted.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Biochemistry, Genetics and Molecular Biology(all)
- General Biochemistry,Genetics and Molecular Biology
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Nature Communications, Vol. 6, 8118, 10.09.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Observation of correlated spin-orbit order in a strongly anisotropic quantum wire system
AU - Brand, C.
AU - Pfnür, Herbert
AU - Landolt, G.
AU - Muff, S.
AU - Dil, Jan Hugo
AU - Das, Tanmoy
AU - Tegenkamp, Christoph
N1 - Funding information: The financial support by the Deutsche Forschungsgemeinschaft (DFG) through FOR1700 and the Swiss National Science Foundation (project no. PP00P2 1447421) is gratefully acknowledged. We also like to thank Monika Jäger for performing some of the STM experiments.
PY - 2015/9/10
Y1 - 2015/9/10
N2 - Quantum wires with spin-orbit coupling provide a unique opportunity to simultaneously control the coupling strength and the screened Coulomb interactions where new exotic phases of matter can be explored. Here we report on the observation of an exotic spin-orbit density wave in Pb-atomic wires on Si(557) surfaces by mapping out the evolution of the modulated spin-texture at various conditions with spin-and angle-resolved photoelectron spectroscopy. The results are independently quantified by surface transport measurements. The spin polarization, coherence length, spin dephasing rate and the associated quasiparticle gap decrease simultaneously as the screened Coulomb interaction decreases with increasing excess coverage, providing a new mechanism for generating and manipulating a spin-orbit entanglement effect via electronic interaction. Despite clear evidence of spontaneous spin-rotation symmetry breaking and modulation of spin-momentum structure as a function of excess coverage, the average spin polarization over the Brillouin zone vanishes, indicating that time-reversal symmetry is intact as theoretically predicted.
AB - Quantum wires with spin-orbit coupling provide a unique opportunity to simultaneously control the coupling strength and the screened Coulomb interactions where new exotic phases of matter can be explored. Here we report on the observation of an exotic spin-orbit density wave in Pb-atomic wires on Si(557) surfaces by mapping out the evolution of the modulated spin-texture at various conditions with spin-and angle-resolved photoelectron spectroscopy. The results are independently quantified by surface transport measurements. The spin polarization, coherence length, spin dephasing rate and the associated quasiparticle gap decrease simultaneously as the screened Coulomb interaction decreases with increasing excess coverage, providing a new mechanism for generating and manipulating a spin-orbit entanglement effect via electronic interaction. Despite clear evidence of spontaneous spin-rotation symmetry breaking and modulation of spin-momentum structure as a function of excess coverage, the average spin polarization over the Brillouin zone vanishes, indicating that time-reversal symmetry is intact as theoretically predicted.
UR - http://www.scopus.com/inward/record.url?scp=84941313389&partnerID=8YFLogxK
U2 - 10.1038/ncomms9118
DO - 10.1038/ncomms9118
M3 - Article
AN - SCOPUS:84941313389
VL - 6
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 8118
ER -