Heon Jung Kim
Pohang University of Science and Technology
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Publication
Featured researches published by Heon Jung Kim.
Physical Review Letters | 2003
Tuson Park; M. B. Salamon; E. M. Choi; Heon Jung Kim; Sung Ik Lee
Field-angle dependent heat capacity of the non-magnetic borocarbide superconductor YNi2B2C reveals a clear fourfold oscillation, the first observation of its kind. The observed angular variations were analyzed as a function of magnetic field angle, field intensity and temperature to provide its origin. The quantitative agreement between experiment and theory strongly suggests that we are directly observing nodal quasiparticles generated along<100>by the Doppler effect. The results demonstrate that field-angle heat capacity can be a powerful tool in probing the momentum-space gap structure in unconventional superconductors such as high Tc cuprates, heavy fermion superconductors, etc.
Physical Review Letters | 2004
Tuson Park; Elbert E. M. Chia; M. B. Salamon; Eric D. Bauer; Ilya Vekhter; Joe D. Thompson; E. M. Choi; Heon Jung Kim; Sung Ik Lee; P. C. Canfield
A study of the dependence of the heat capacity C(p)(alpha) on the field angle in LuNi2B2C reveals an anomalous disorder effect. For pure samples, C(p)(alpha) exhibits a fourfold variation as the field H (alpha=0). A slightly disordered sample, however, develops anomalous secondary minima along <110> for mu(0)H>1 T, leading to an eightfold pattern at 2 K and 1.5 T. The anomalous pattern is discussed in terms of coexisting superconducting gap anisotropy and nonlocal effects.
Physical Review B | 2002
W. N. Kang; Hyeong-Jin Kim; Eun-Mi Choi; Heon Jung Kim; Kijoon H. P. Kim; Sung-Ik Lee
The mixed-state Hall resistivity
Superconductor Science and Technology | 2003
Won Nam Kang; Heon Jung Kim; Hyeong-Jin Kim; Eun-Mi Choi; Kijoon H. P. Kim; Hyeok Lee; Sung-Ik Lee
{\ensuremath{\rho}}_{\mathrm{xy}}
Physical Review B | 2005
Tuson Park; A. Malinowski; M. F. Hundley; Joe D. Thompson; Young Sun; M. B. Salamon; E. M. Choi; Heon Jung Kim; Sung-Ik Lee; P. C. Canfield; V. G. Kogan
and the longitudinal resistivity
International Journal of Modern Physics B | 2003
J. Demsar; Richard D. Averitt; Antoinette J. Taylor; W. N. Kang; Heon Jung Kim; Eun-Mi Choi; Sung-Ik Lee
{\ensuremath{\rho}}_{\mathrm{xx}}
quantum electronics and laser science conference | 2003
J. Demsar; Richard D. Averitt; Antoinette J. Taylor; W. N. Kang; Heon Jung Kim; Eun-Mi Choi; Sung-k Lee
in superconducting
Journal of Low Temperature Physics | 2003
Won Nam Kang; Kijoon H. P. Kim; Hyeong-Jin Kim; Eun-Mi Choi; Heon Jung Kim; Hyun-Sook Lee; Sung-Ik Lee
{\mathrm{MgB}}_{2}
Physical Review B | 2002
W. N. Kang; Hyeong-Jin Kim; Eun-Mi Choi; Heon Jung Kim; Kijoon H. P. Kim; Hyeok Lee; Sung-Ik Lee
thin films have been investigated as a function of the magnetic field over a wide range of current densities from
Physical Review B | 2004
Tuson Park; M. B. Salamon; E. M. Choi; Heon Jung Kim; Sung Ik Lee
{10}^{2}