TY - JOUR
T1 - Local density of states near the surface of high-Tc superconductors under magnetic field based on the t-J model
AU - Tanuma, Y.
AU - Tanaka, Y.
AU - Tsuchiura, H.
AU - Kashiwaya, S.
N1 - Funding Information:
This work is supported by the Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Corporation (JST). The first author (Y.T.) acknowledges the financial support of Research Fellowships of Japan Society for the Promotion of Science (JSPS) for Young Scientists.
PY - 2002/2/15
Y1 - 2002/2/15
N2 - Quasiparticle states near the surface of d-wave superconductors in a magnetic field are studied based on the t-J model on the 2D square lattice within the Gutzwiller approximation. We perform a calculation on the local density of states near the (1 1 0) surface, by changing the hole concentration in the presence of applied magnetic field. In the low-doping region, the zero-energy peak (ZEP) is not sensitive to the applied magnetic field. With the increase of the hole concentration, the ZEP splits into two due to the broken time reversal symmetry state with induced subdominant s-wave like component. Even in this case, the position of split peak is insensitive to the applied magnetic field.
AB - Quasiparticle states near the surface of d-wave superconductors in a magnetic field are studied based on the t-J model on the 2D square lattice within the Gutzwiller approximation. We perform a calculation on the local density of states near the (1 1 0) surface, by changing the hole concentration in the presence of applied magnetic field. In the low-doping region, the zero-energy peak (ZEP) is not sensitive to the applied magnetic field. With the increase of the hole concentration, the ZEP splits into two due to the broken time reversal symmetry state with induced subdominant s-wave like component. Even in this case, the position of split peak is insensitive to the applied magnetic field.
KW - Broken time-reversal symmetry state
KW - Local density of states
KW - Magnetic field dependence
KW - Zero-bias conductance peak
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U2 - 10.1016/S0921-4534(01)00997-2
DO - 10.1016/S0921-4534(01)00997-2
M3 - Article
AN - SCOPUS:0037082793
SN - 0921-4534
VL - 367
SP - 147
EP - 151
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 1-4
ER -