Physics – Condensed Matter – Superconductivity
Scientific paper
2004-11-27
Phys. Rev. B 71, 054505 (2005)
Physics
Condensed Matter
Superconductivity
12 pages, 12 figures
Scientific paper
10.1103/PhysRevB.71.054505
We use neutron scattering to study the influence of a magnetic field on spin structures of Nd$_2$CuO$_4$. On cooling from room temperature, Nd$_2$CuO$_4$ goes through a series of antiferromagnetic (AF) phase transitions with different noncollinear spin structures. While a c-axis aligned magnetic field does not alter the basic zero-field noncollinear spin structures, a field parallel to the CuO$_2$ plane can transform the noncollinear structure to a collinear one ("spin-flop" transition), induce magnetic disorder along the c-axis, and cause hysteresis in the AF phase transitions. By comparing these results directly to the magnetoresistance (MR) measurements of Nd$_{1.975}$Ce$_{0.025}$CuO$_4$, which has essentially the same AF structures as Nd$_2$CuO$_4$, we find that a magnetic-field-induced spin-flop transition, AF phase hysteresis, and spin c-axis disorder all affect the transport properties of the material. Our results thus provide direct evidence for the existence of a strong spin-charge coupling in electron-doped copper oxides.
Dai Pengcheng
Li Shiliang
Mandrus David
Onose Yoshinori
Tokura Yasuhiro
No associations
LandOfFree
Spin-Charge Coupling in lightly doped Nd$_{2-x}$Ce$_{x}$CuO$_4$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spin-Charge Coupling in lightly doped Nd$_{2-x}$Ce$_{x}$CuO$_4$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-Charge Coupling in lightly doped Nd$_{2-x}$Ce$_{x}$CuO$_4$ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-691703