Emergence of superconductivity from the dynamically heterogeneous insulating state in La2−xSrxCuO4
Source abstract
Abstract
A central issue for copper oxides is the nature of the insulating ground state at low carrier densities and the emergence of high-temperature superconductivity from that state with doping. Even though this superconductor-insulator transition (SIT) is a zero-temperature transition, measurements are not usually carried out at low temperatures. Here we use magnetoresistance to probe both the insulating state at very low temperatures and the presence of superconducting fluctuations in La2-xSrxCuO4(LSCO) films, for doping levels that range from the insulator to the superconductor (x=0.03-0.08). We observe that the charge glass behavior, characteristic of the insulating state, is suppressed with doping, but it coexists with superconducting fluctuations that emerge already on the insulating side of the SIT. The unexpected quenching of the superconducting fluctuations by the competing charge order at low temperatures provides a new perspective on the mechanism for the SIT.
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Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
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1. Kastner, M. A., Birgeneau, R. J., Shirane, G. & Endoh, Y. Magnetic, transport, and optical properties of monolayer copper oxides. Rev. Mod. Phys. 70, 897–928 (1998).10.1103/RevModPhys.70.897 ↗
2. Ando, Y., Boebinger, G. S., Passner, A., Kimura, T. & Kishio, K. Logarithmic divergence of both in-plane and out-of-plane normal-state resistivities of superconducting La2−xSrxCuO4 in the zero-temperature limit. Phys. Rev. Lett. 75, 4662–4665 (1995).10.1103/PhysRevLett.75.4662 ↗
3. Boebinger, G. S. et al. Insulator-to-metal crossover in the normal state of La2−xSrxCuO4 near optimum doping. Phys. Rev. Lett. 77, 5417–5420 (1996).10.1103/PhysRevLett.77.5417 ↗
4. Cho, J. H., Borsa, F., Johnston, D. C. & Torgeson, D. R. Spin dynamics in La2−xSrxCuO4 (0.02≤x≤0.08) from 139La NQR relaxation: Fluctuations in a finite-length-scale system. Phys. Rev. B 46, 3179–3182 (1992).10.1103/PhysRevB.46.3179 ↗
5. Niedermayer, C. et al. Common phase diagram for antiferromagnetism in La2−xSrxCuO4 and Y1−xCaxBa2Cu3O6 as seen by muon spin rotation. Phys. Rev. Lett. 80, 3843–3846 (1998).10.1103/PhysRevLett.80.3843 ↗
6. Lavrov, A. N., Ando, Y., Komiya, S. & Tsukada, I. Unusual magnetic susceptibility anisotropy in untwinned La2−xSrxCuO4 single crystals in the lightly doped region. Phys. Rev. Lett. 87, 017007 (2001).10.1103/PhysRevLett.87.017007 ↗
7. Julien, M-H. et al. Charge segregation, cluster spin glass, and superconductivity in La1.94Sr0.06CuO4 . Phys. Rev. Lett. 83, 604–607 (1999).10.1103/PhysRevLett.83.604 ↗
8. Singer, P. M., Hunt, A. W. & Imai, T. 63Cu NQR evidence for spatial variation of hole concentration in La2−xSrxCuO4 . Phys. Rev. Lett. 88, 047602 (2002).10.1103/PhysRevLett.88.047602 ↗
9. Dumm, M., Komiya, S., Ando, Y. & Basov, D. N. Anisotropic electromagnetic response of lightly doped La2−xSrxCuO4 within the CuO2 planes. Phys. Rev. Lett. 91, 077004 (2003).10.1103/PhysRevLett.91.077004 ↗
10. Ando, Y., Segawa, K., Komiya, S. & Lavrov, A. N. Electrical resistivity anisotropy from self-organized one dimensionality in high-temperature superconductors. Phys. Rev. Lett. 88, 137005 (2002).10.1103/PhysRevLett.88.137005 ↗
11. Ando, Y., Lavrov, A. N. & Komiya, S. Anisotropic magnetoresistance in lightly doped La2−xSrxCuO4: Impact of antiphase domain boundaries on the electron transport. Phys. Rev. Lett. 90, 247003 (2003).10.1103/PhysRevLett.90.247003 ↗
12. Raičević, I., Jaroszyński, J., Popović, D., Panagopoulos, C. & Sasagawa, T. Evidence for charge glasslike behavior in lightly doped La2−xSrxCuO4 at low temperatures. Phys. Rev. Lett. 101, 177004 (2008).10.1103/PhysRevLett.101.177004 ↗
13. Jelbert, G. R. et al. Measurement of low energy charge correlations in underdoped spin-glass La-based cuprates using impedance spectroscopy. Phys. Rev. B 78, 132513 (2008).10.1103/PhysRevB.78.132513 ↗
14. Raičević, I., Popović, D., Panagopoulos, C. & Sasagawa, T. Large positive magnetoresistance of the lightly doped La2CuO4 Mott insulator. Phys. Rev. B 81, 235104 (2010).10.1103/PhysRevB.81.235104 ↗
15. Shi, X. et al. History dependent magnetoresistance in lightly doped La2−xSrxCuO4 thin films. Physica B 407, 1915–1918 (2012).10.1016/j.physb.2012.01.063 ↗
16. Panagopoulos, C. & Dobrosavljević, V. Self-generated electronic heterogeneity and quantum glassiness in the high-temperature superconductors. Phys. Rev. B 72, 014536 (2005).10.1103/PhysRevB.72.014536 ↗
17. Bollinger, A. T. et al. Superconductor-insulator transition in La2−xSrxCuO4 at the pair quantum resistance. Nature 472, 458–460 (2011).10.1038/nature09998 ↗
18. Leng, X., Garcia-Barriocanal, J., Bose, S., Lee, Y. & Goldman, A. M. Electrostatic control of the evolution from a superconducting phase to an insulating phase in ultrathin YBa2Cu3O7−x films. Phys. Rev. Lett. 107, 027001 (2011).10.1103/PhysRevLett.107.027001 ↗
19. Fisher, M. P. A., Grinstein, G. & Girvin, S. M. Presence of quantum diffusion in two dimensions: universal resistance at the superconductor–insulator transition. Phys. Rev. Lett. 64, 587–590 (1990).10.1103/PhysRevLett.64.587 ↗
20. Li, L., Checkelsky, J. G., Komiya, S., Ando, Y. & Ong, N. P. Low-temperature vortex liquid in La2−xSrxCuO4 . Nature Phys. 3, 311–314 (2007).10.1038/nphys563 ↗
21. Li, L. et al. Diamagnetism and Cooper pairing above Tc in cuprates. Phys. Rev. B 81, 054510 (2010).10.1103/PhysRevB.81.054510 ↗
22. Bozovic, I. Atomic-layer engineering of superconducting oxides: Yesterday, today, tomorrow. IEEE Trans. Appl. Supercond. 11, 2686–2695 (2001).10.1109/77.919617 ↗
23. Ando, Y., Lavrov, A. N., Komiya, S., Segawa, K. & Sun, X. F. Mobility of the doped holes and the antiferromagnetic correlations in underdoped high- Tc cuprates. Phys. Rev. Lett. 87, 017001 (2001).10.1103/PhysRevLett.87.017001 ↗
24. Thio, T. et al. Antisymmetric exchange and its influence on the magnetic structure and conductivity of La2CuO4 . Phys. Rev. B 38, 905–908 (1988).10.1103/PhysRevB.38.905 ↗
25. Rullier-Albenque, F. et al. Total suppression of superconductivity by high magnetic fields in YBa2Cu3O6.6 . Phys. Rev. Lett. 99, 027003 (2007).10.1103/PhysRevLett.99.027003 ↗
26. Rullier-Albenque, F., Alloul, H. & Rikken, G. High-field studies of superconducting fluctuations in high- Tc cuprates: Evidence for a small gap distinct from the large pseudogap. Phys. Rev. B 84, 014522 (2011).10.1103/PhysRevB.84.014522 ↗
27. Rourke, P. M. C. et al. Phase-fluctuating superconductivity in overdoped La2−xSrxCuO4 . Nature Phys. 7, 455–458 (2011).10.1038/nphys1945 ↗
28. Harris, J. M. et al. Violation of Kohler’s rule in the normal-state magnetoresistanee of YBa2Cu3O7−δ and La2SrxCuO4 . Phys. Rev. Lett. 75, 1391–1394 (1995).10.1103/PhysRevLett.75.1391 ↗
29. Wang, Y. et al. Onset of the vortexlike Nernst signal above Tc in La2−xSrxCuO4 and Bi2Sr2−yLayCuO6 . Phys. Rev. B 64, 224519 (2001).10.1103/PhysRevB.64.224519 ↗
30. Bilbro, L. S. et al. Temporal correlations of superconductivity above the transition temperature in La2−xSrxCuO4 probed by terahertz spectroscopy. Nature Phys. 7, 298–302 (2011).10.1038/nphys1912 ↗
31. Grbić, M. S. et al. Temperature range of superconducting fluctuations above Tc in YBa2Cu3O7−δ single crystals. Phys. Rev. B 83, 144508 (2011).10.1103/PhysRevB.83.144508 ↗
32. Fanfarillo, L., Benfatto, L. & Castellani, C. Current-current Fermi-liquid corrections to the superconducting fluctuations on conductivity and diamagnetism. Phys. Rev. B 85, 024507 (2012).10.1103/PhysRevB.85.024507 ↗
33. Wang, Y. & Wen, H-H. Doping dependence of the upper critical field in La2−xSrxCuO4 from specific heat. Europhys. Lett. 81, 57007 (2008).10.1209/0295-5075/81/57007 ↗
34. Ando, Y. et al. Resistive upper critical fields and irreversibility lines of optimally doped high- Tc cuprates. Phys. Rev. B 60, 12475–12479 (1999).10.1103/PhysRevB.60.12475 ↗
35. Stewart, M. D. Jr, Yin, A., Xu, J. M. & Valles, J. M. Jr Superconducting pair correlations in an amorphous insulating nanohoneycomb film. Science 318, 1273–1275 (2007).10.1126/science.1149587 ↗
36. Sacépe, B. et al. Localization of preformed Cooper pairs in disordered superconductors. Nature Phys. 7, 239–244 (2011).10.1038/nphys1892 ↗
37. Wu, T. et al. Magnetic-field-induced charge-stripe order in the high-temperature superconductor YBa2Cu3Oy . Nature 477, 191–194 (2011).10.1038/nature10345 ↗