Planar tunneling spectroscopic studies of splitting vs. non-splitting of the zero-bias conductance peak in YBa2Cu3O7−* thin films

2004 ◽  
Vol 408-410 ◽  
pp. 801-803 ◽  
Author(s):  
P.J. Hentges ◽  
L.H. Greene ◽  
G. Westwood ◽  
W.G. Klemperer
Keyword(s):  
Thin Films ◽  
Spectroscopic Studies ◽  
Zero Bias ◽  
Conductance Peak ◽  
Planar Tunneling ◽  
Zero Bias Conductance

scholarly journals Anomalous Zero-Bias Conductance Peak in a Nb–InSb Nanowire–Nb Hybrid Device

Nano Letters ◽  
2012 ◽  
Vol 12 (12) ◽  
pp. 6414-6419 ◽  
Author(s):  
M. T. Deng ◽  
C. L. Yu ◽  
G. Y. Huang ◽  
M. Larsson ◽  
P. Caroff ◽  
...  
Keyword(s):  
Zero Bias ◽  
Hybrid Device ◽  
Conductance Peak ◽  
Zero Bias Conductance

scholarly journals Theory of point contact spectroscopy in correlated materials

2015 ◽  
Vol 112 (3) ◽  
pp. 651-656 ◽  
Author(s):  
Wei-Cheng Lee ◽  
Wan Kyu Park ◽  
Hamood Z. Arham ◽  
Laura H. Greene ◽  
Philip Phillips
Keyword(s):  
Scattering Length ◽  
Point Contact ◽  
Microscopic Theory ◽  
Effective Density ◽  
Strongly Correlated ◽  
Metallic Electrode ◽  
Zero Bias ◽  
Point Contact Spectroscopy ◽  
Conductance Peak ◽  
Zero Bias Conductance

We developed a microscopic theory for the point-contact conductance between a metallic electrode and a strongly correlated material using the nonequilibrium Schwinger-Kadanoff-Baym-Keldysh formalism. We explicitly show that, in the classical limit, contact size shorter than the scattering length of the system, the microscopic model can be reduced to an effective model with transfer matrix elements that conserve in-plane momentum. We found that the conductance dI/dV is proportional to the effective density of states, that is, the integrated single-particle spectral function A(ω = eV) over the whole Brillouin zone. From this conclusion, we are able to establish the conditions under which a non-Fermi liquid metal exhibits a zero-bias peak in the conductance. This finding is discussed in the context of recent point-contact spectroscopy on the iron pnictides and chalcogenides, which has exhibited a zero-bias conductance peak.

On the Origin of Zero-Bias Conductance Peak in High-Tc Superconductors

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3027-3030
Author(s):  
Alexander B. Nazarenko ◽  
Ernst A. Pashitskii ◽  
Alexander E. Pashitskii
Keyword(s):  
Elastic Scattering ◽  
Order Parameter ◽  
Magnetic Impurities ◽  
High Tc Superconductors ◽  
Zero Bias ◽  
High Tc ◽  
Conductance Peak ◽  
Wave Symmetry ◽  
Zero Bias Conductance ◽  
D Wave

We show that the zero-bias conductance peak observed in tunnel and point junctions of cuprates can be a consequence of "unitary" elastic scattering of the carriers by non-magnetic impurities in the vicinity of the junction interface and d-wave symmetry of the order parameter.

scholarly journals Zero-bias conductance peak and Josephson effect in graphene-NbTiN junctions

2012 ◽  
Vol 85 (20) ◽  
Author(s):  
M. Popinciuc ◽  
V. E. Calado ◽  
X. L. Liu ◽  
A. R. Akhmerov ◽  
T. M. Klapwijk ◽  
...  
Keyword(s):  
Josephson Effect ◽  
Zero Bias ◽  
Conductance Peak ◽  
Zero Bias Conductance

Influence of the Impurity-scattering on Zero-bias Conductance Peak in Ferromagnet/Insulator/d-wave Superconductor Junctions

2003 ◽  
Vol 72 (4) ◽  
pp. 895-899 ◽  
Author(s):  
Nobukatsu Yoshida ◽  
Yasuhiro Asano ◽  
Hiroyoshi Itoh ◽  
Yukio Tanaka ◽  
Jun-ichiro Inoue ◽  
...  
Keyword(s):  
Impurity Scattering ◽  
Zero Bias ◽  
Conductance Peak ◽  
Zero Bias Conductance ◽  
D Wave

Zero Bias Conductance Peak Enhancement in Bi 2Sr 2CaCu 2O 8+δ-SiO-Ag Planar Tunnel Junctions

2000 ◽  
Vol 69 (9) ◽  
pp. 2743-2746 ◽  
Author(s):  
Iduru Shigeta ◽  
Toll Uchida ◽  
Yukihiro Tominari ◽  
Takeshi Arai ◽  
Fusao Ichikawa ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Zero Bias ◽  
Conductance Peak ◽  
Peak Enhancement ◽  
Zero Bias Conductance
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