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Magnetic field induced modification of superfluid density and interplane spectral weight in YBa2 Cu3 Oy

Publication ,  Journal Article
Laforge, AD; Padilla, WJ; Burch, KS; Li, ZQ; Schafgans, AA; Segawa, K; Ando, Y; Basov, DN
Published in: Physical Review B - Condensed Matter and Materials Physics
March 3, 2009

We report on the interlayer infrared response of YBa2 Cu3 Oy in an applied magnetic field. This study explores both the underdoped (y=6.67 and 6.75) and optimally doped (y=6.95) regions of the phase diagram, and includes data for fields applied both parallel to the c axis and to the CuO2 planes in this anisotropic superconductor. We focus on the transfer of optical conductivity spectral weight from high-frequency regions of the spectrum to the nondissipative superconducting condensate, and examine the effect of magnetic field upon this process. A sum-rule analysis reveals that magnetic fields H/c eliminate the high-frequency contribution to the superfluid density, returning the system to a more BCS-like energy scale. For fields H/ CuO2, however, the high-energy contribution scales with the superfluid density, and the anomalous scheme of condensate formation is maintained, at least in underdoped y=6.67 and 6.75 samples. This behavior is discussed in relation to the change in electronic kinetic energy and shown to be closely related to the suppression of interplane phase coherence. © 2009 The American Physical Society.

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Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

March 3, 2009

Volume

79

Issue

10

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Laforge, A. D., Padilla, W. J., Burch, K. S., Li, Z. Q., Schafgans, A. A., Segawa, K., … Basov, D. N. (2009). Magnetic field induced modification of superfluid density and interplane spectral weight in YBa2 Cu3 Oy. Physical Review B - Condensed Matter and Materials Physics, 79(10). https://doi.org/10.1103/PhysRevB.79.104516
Laforge, A. D., W. J. Padilla, K. S. Burch, Z. Q. Li, A. A. Schafgans, K. Segawa, Y. Ando, and D. N. Basov. “Magnetic field induced modification of superfluid density and interplane spectral weight in YBa2 Cu3 Oy.” Physical Review B - Condensed Matter and Materials Physics 79, no. 10 (March 3, 2009). https://doi.org/10.1103/PhysRevB.79.104516.
Laforge AD, Padilla WJ, Burch KS, Li ZQ, Schafgans AA, Segawa K, et al. Magnetic field induced modification of superfluid density and interplane spectral weight in YBa2 Cu3 Oy. Physical Review B - Condensed Matter and Materials Physics. 2009 Mar 3;79(10).
Laforge, A. D., et al. “Magnetic field induced modification of superfluid density and interplane spectral weight in YBa2 Cu3 Oy.” Physical Review B - Condensed Matter and Materials Physics, vol. 79, no. 10, Mar. 2009. Scopus, doi:10.1103/PhysRevB.79.104516.
Laforge AD, Padilla WJ, Burch KS, Li ZQ, Schafgans AA, Segawa K, Ando Y, Basov DN. Magnetic field induced modification of superfluid density and interplane spectral weight in YBa2 Cu3 Oy. Physical Review B - Condensed Matter and Materials Physics. 2009 Mar 3;79(10).

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

March 3, 2009

Volume

79

Issue

10

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences