The millimetre-wave magneto-optical response of Sr2RuO4

Conference item

We report a study of the angle-dependent millimetre-wave magnetoconductivity of the p-wave triplet-paired perovskite superconductor Sr2RuO4. We find two harmonic series. We assign the first to interlayer cyclotron resonance of the beta-Fermi surface and its harmonics, yielding a cyclotron effective mass of m(beta)(cr) = 4.25 m(e). We assign the second series, which contains only odd harmonics, to cyclotron resonance of the gamma-Fermi surface, yielding a cyclotron effective mass of m(gamma)(cr) = 12.4 m(e). In addition, we find a very strong absorption mode in the presence of a magnetic field component parallel to the quasi-two-dimensional (Q2D) planes of the sample. Its dependence on the orientation of the magnetic field cannot be described in the context of conventional Q2D cyclotron resonance, and the origin of this mode is not yet clear.

Authors: Ardavan, A; Rzepniewski, E; Edwards, R; Singleton, J; Maeno, Y

• Publication status: Published
• Journal: INTERNATIONAL JOURNAL OF MODERN PHYSICS B
• Volume: 16
• Issue: 20-22
• Pages: 3238-3243
• Publication date: 2002-08-30
• Event title: 4th Conference on Physical Phenomena at High Magnetic Filds
• DOI: 10.1142/S0217979202014061
• EISSN: 1793-6578
• ISSN: 0217-9792
• Keywords: ANGLE; QUASI-2-DIMENSIONAL ORGANIC CONDUCTORS; CYCLOTRON-RESONANCE; MAGNETORESISTANCE; PEROVSKITE SUPERCONDUCTOR SR2RUO4; LAYERED PEROVSKITE; QUANTUM OSCILLATIONS; FERMI-SURFACE; NORMAL-STATE