Zero-bias conductance peak splitting due to multiband effect in tunneling spectroscopy

Abstract

We study how the multiplicity of the Fermi surface affects the zero-bias peak in conductance spectra of tunneling spectroscopy. As case studies, we consider models for organic superconductors $\kappa$-(BEDT-TTF)${}_2$Cu(NCS)${}_2$ and (TMTSF)${}_2$ClO${}_4$. We find that multiplicity of the Fermi surfaces can lead to a splitting of the zero-bias conductance peak (ZBCP). We propose that the presence/absence of the ZBCP splitting is used as a probe to distinguish the pairing symmetry in $\kappa$-(BEDT-TTF)${}_2$Cu(NCS)${}_2$.

7 pages, 7 figures

References in corpus (51)

• Tunneling into Current-Carrying Surface States of High T${}_c$ Superconductors
• Midgap edge states and pairing symmetry of quasi-one-dimensional organic superconductors
• Spin current in ferromagnet/insulator/superconductor junctions
• Pairing due to Spin Fluctuations in Layered Organic Superconductors
• Superconducting Gap Structure of kappa-(BEDT-TTF)2Cu(NCS)2 Probed by Thermal Conductivity Tensor
• Phase Diagram of Superconductivity on the Anisotropic Triangular Lattice Hubbard Model
• Evidence of a d to s-wave pairing symmetry transition in the electron-doped cuprate superconductor Pr${}_{2-x}$Ce${}_x$CuO${}_4$
• Spin-triplet superconductivity in Sr${}_2$RuO${}_4$ probed by Andreev reflection
• Degenerate ground state in a mesoscopic YBaCuO grain boundary Josephson junction
• Spin polarized tunneling in ferromagnet/unconventional superconductor junctions
• Spin Fluctuation-Induced Superconductivity in Organic Compounds
• Theory of tunneling spectroscopy in superconducting Sr2RuO4
• Low Temperature Penetration depth of κ-(ET)_2Cu[N(CN)_2]Br and κ-(ET)_2Cu(NCS)_2
• Circuit theory of unconventional superconductor junctions
• Observation of Andreev Surface Bound States in the 3-K phase Region of Sr_2RuO_4
• Josephson current in s-wave superconductor / Sr_2RuO_4 junctions
• Experimental determination of superconducting parameters for the intermetallic perovskite superconductor ${\text {MgCNi}}_3
• Temperature-dependence of spin-polarized transport in ferromagnet / unconventional superconductor junctions
• Superconductivity and spin correlation in organic conductors: a quantum Monte Carlo study
• d_{x^2-y^2}- vs. d_{xy}- like pairings in organic superconductors κ-(BEDT-TTF)_2 X
• Theory of tunneling conductance for normal metal/insulator/triplet superconductor junctions
• Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects
• Tunneling conductance of normal metal / $d_{x^2-y^2}$-wave superconductor junctions in the presence of broken time reversal symmetry states near interfaces
• DC Josephson Effect in SNS Junctions of Anisotropic Superconductors
• Local and macroscopic tunneling spectroscopy of Y(1-x)CaxBa2Cu3O(7-d) films: evidence for a doping dependent is or idxy component in the order parameter
• Spectroscopic evidence for unconventional superconductivity in UBe${}_{13}$
• Disappearance of Ensemble-Averaged Josephson Current in Dirty SNS Junctions of d-wave Superconductors
• Theory of Local Density of States of d-Wave Superconducting State Near the Surfaces of the t-J Model
• Theory of Spin polarized Tunneling in Superconducting Sr2RuO4
• Tomography of pairing symmetry from magnetotunneling spectroscopy -- a case study for quasi-1D organic superconductors
• Theory of magnetotunneling spectroscopy in spin triplet p-wave superconductors
• Influences of broken time-reversal symmetry on the d.c. Josephson effects in d-wave superconductors
• Broadening of Andreev-Bound States in d_{x^2-y^2} superconductors
• Andreev reflections on Y1-xCaxBa2Cu3O7-delta evidence for an unusual proximity effect
• Nodeless d-wave superconductivity in a quasi-one-dimensional organic superconductor under anion order
• Theory of charge transport in diffusive normal metal / conventional superconductor point contacts
• Surface electronic scattering in d-wave superconductors
• Theoretical study of quasiparticle states near the surface of a quasi-one-dimensional organic superconductor $(TMTSF{)}_2{PF}_6$
• Theory of the Josephson effect in superconductor / one-dimensional electron gas / superconductor junction
• Mechanisms of Spontaneous Current Generation in an Inhomogeneous d-Wave Superconductor
• Anomalous proximity effect in d-wave superconductors
• Charge current in ferromagnet-superconductor junction with pairing state of broken time-reversal symmetry
• Interface effects on the shot noise in normal metal- d-wave superconductor Junctions
• Parity-sensitive measurements based on ferromagnet/superconductor tunneling junctions
• D-Wave Superconductors near Surfaces and Interfaces: A Scattering Matrix Approach within the Quasiclassical Technique
• Generalized method of image and the tunneling spectroscopy in high-Tc superconductors
• Influence of impurity scattering on tunneling conductance in normal metal- d -wave superconductor junctions
• Tunneling conductance in normal metal - high $T_C$ cuprate junctions in the presence of magnetic field
• Magnetotunneling spectroscopy as a probe for pairing symmetry determination in quasi-2D anisotropic superconductors
• Localized surface states in HTSC: Alternative mechanism of zero-bias conductance peaks
• Influence of impurity-scattering on tunneling conductance in d-wave superconductors with broken time reversal symmetry

Cited by in corpus (6)

• Superconductivity and a Mott Transition in a Hubbard Model on an Anisotropic Triangular Lattice
• Long range proximity effect in La2/3Ca1/3MnO3 (LCMO)/(100)YBa2Cu3O7-delta (YBCO) ferromagnet/superconductor bilayers: Evidence for induced triplet superconductivity in the ferromagnet
• Surface density of states of s+-wave Cooper pairs in a two-band model
• Superconductivity and Antiferromagnetism in Quasi-one-dimensional Organic Conductors
• Local tunneling probe of (110) Y_0.95Ca_0.05Ba_2Cu_3O_7-delta thin films in a magnetic field
• Impurity resonance states in electron-doped high T_c superconductors