Online Supplementary Material: Low temperature vortex liquid in $\rm La_{2-x}Sr_xCuO_4$
| dc.creator | Li, Lu | |
| dc.creator | Checkelsky, J. G. | |
| dc.creator | Komiya, Seiki | |
| dc.creator | Ando, Yoichi | |
| dc.creator | Ong, N. P. | |
| dc.date | 2007-03-13 | |
| dc.date.accessioned | 2026-07-07T07:59:51Z | |
| dc.date.available | 2026-07-07T07:59:51Z | |
| dc.description | We report here the supplementary material for Ref. [1]. Using torque magnetometry, we measured the magnetization anisotropy of 7 crystals of $\rm La_{2-x}Sr_xCuO_4$ (LSCO). In optimally-doped cuprates, the bulk susceptibility is dominated by the paramagnetic van-Vleck orbital term $χ_{orb}$ which has a significant anisotropy ($χ^{orb}_c>χ^{orb}_{ab}$) that changes weakly with $T$ (subscripts $c$ and ${ab}$ identify quantities measured with $\bf H||c$ and $\bf H\perp c$, respectively). Moreover, in the lightly-doped regime, the paramagnetic spin susceptibilities $χ^s_c$ and $χ^s_{ab}$ become significantly large below the interval 40-60 K. However, the spin susceptibility is very nearly isotropic (except below 10 K where its anisotropy becomes measurable). Against the large orbital and spin terms, the weak diamagnetic signal is very difficult to resolve using standard bulk magnetometry in lightly-doped cuprates. By contrast, torque magnetometry selectively detects the orbital diamagnetism generated by supercurrents confined to the CuO$_2$ layers while ignoring the large spin contribution when it is isotropic. The orbital van-Vleck contribution is also detected, but as a ``background'' that is $H$-linear to intense fields and only mildly $T$ dependent. | |
| dc.description | 11 pages, 9 figures, Supplement to cond-mat/0702121, Nature Physics, in press | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0703348 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0703348 | |
| dc.identifier | Online Supplement to Nature Physics 3, 311-314 (2007) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/128528 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Online Supplementary Material: Low temperature vortex liquid in $\rm La_{2-x}Sr_xCuO_4$ | |
| dc.type | text |