Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Je-Huan Koo"'
Publikováno v:
Mathematics, Vol 8, Iss 9, p 1512 (2020)
We investigate why normal electrons in superconductors have no resistance. Under the same conditions, the band gap is reduced to zero as well, but normal electrons at superconducting states are condensed into this virtual energy band gap.
Externí odkaz:
https://doaj.org/article/246b823bcaf34683a04bbbd68246b299
Autor:
Je Huan Koo
Publikováno v:
The European Physical Journal Plus. 136
The high-transition temperatures of cuprate and pnictide superconductors hinder explanation in light of the Bardeen-Cooper-Schrieffer (BCS) models of superconductivity. One major reason for this hindrance can be resolved via another distribution of e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::398b192b6346ec252081e8dc5a004eca
https://doi.org/10.1140/epjp/s13360-021-02029-z
https://doi.org/10.1140/epjp/s13360-021-02029-z
Autor:
Kwang-Sei Lee, Je Huan Koo
Publikováno v:
Journal of the Korean Physical Society. 76:834-836
We investigate the origin of the band gap in the spin ice material Dy2Ti2O7. The band gap is caused by Bardeen-Cooper-Schrieffer (BCS)-type electron-electron interactions that are transformed from electron-ion interactions. Additionally, the residual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2731240ec09c2c115ca0ac1692f04a13
https://doi.org/10.3938/jkps.76.834
https://doi.org/10.3938/jkps.76.834
Autor:
Je Huan Koo, Kwang-Sei Lee
Publikováno v:
Physica C: Superconductivity and its Applications. 563:59-62
The pinning of the charge-density-wave (CDW) is known to hinder superconductivity, which can essentially be resolved by Josephson tunneling between the nearest vortices in which pinned CDWs are confined within a quantum well. Sliding CDWs with superc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e164298a64fa7851810546e2156528b
https://doi.org/10.1016/j.physc.2019.04.004
https://doi.org/10.1016/j.physc.2019.04.004
Publikováno v:
Journal of the Korean Physical Society. 74:1085-1088
We explain the lambda (λ) transition in the heat capacity in terms of spin freezing on the basis of finite-sized block spin concepts. Thus, the spin-glass phase or the antiferromagnetic/paramagnetic phase near the Neel temperature may be considered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13ea4190b84772dadfd7e05af5cf78a4
https://doi.org/10.3938/jkps.74.1085
https://doi.org/10.3938/jkps.74.1085
Autor:
Je Huan Koo, Kwang-Sei Lee
Publikováno v:
Ferroelectrics. 540:4-9
We apply a photon correlation theory to ferroelectrics where we consider a photon field from its constituent electrons and ions. We calculate the spontaneous polarization Ps which originate...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aef6e4f030e2a0453ae87f44055843b0
https://doi.org/10.1080/00150193.2019.1611103
https://doi.org/10.1080/00150193.2019.1611103
Autor:
Je Huan Koo
Publikováno v:
Journal of Magnetism and Magnetic Materials. 551:169130
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a248b92d4bf3aa4089dd6efea47f3d7e
https://doi.org/10.1016/j.jmmm.2022.169130
https://doi.org/10.1016/j.jmmm.2022.169130
Autor:
Kwang-Sei Lee, Je Huan Koo
Publikováno v:
Ferroelectrics Letters Section. 44:42-48
Considering a photon field from its constituent electrons and ions, a photon correlation theory for ferroelectrics and antiferromagnetism is proposed. We calculate the spontaneous polarization which originates from a certain alignments of photon fiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c25689c9578f49833de405329e86f86
https://doi.org/10.1080/07315171.2017.1320491
https://doi.org/10.1080/07315171.2017.1320491
Autor:
Yun Ki Kim, Je Huan Koo
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 30:317-324
We investigate the relationship between superconductivity and spin glasses, which were observed to be coexistent in heavy fermion superconductors (HFSs). We begin by explaining the phase of spin glass using concepts of finite-sized block spin. We the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4be29e6dba971c514e35ab93d4a692a4
https://doi.org/10.1007/s10948-016-3766-x
https://doi.org/10.1007/s10948-016-3766-x