Seunghyun Khim

TaIrTe4: A ternary type-II Weyl semimetal

In metallic condensed matter systems two different types of Weyl fermions can in principle emerge, with either a vanishing (type-I) or with a finite (type-II) density of states at the Weyl node energy. So far only WTe2 and MoTe2 were predicted to be type-II Weyl semi-metals. Here we identify TaIrTe4 as a third member of this family of topological semi-metals. TaIrTe4 has the attractive feature that it hosts only four well-separated Weyl points, the minimum imposed by symmetry. Moreover, the resulting topological surface states - Fermi arcs connecting Weyl nodes of opposite chirality - extend to about 1/3 of the surface Brillouin zone. This large momentum-space separation is very favorable for detecting the Fermi arcs spectroscopically and in transport experiments.

Evidence for dominant Pauli paramagnetic effect in the upper critical field of single-crystalline FeTe 0.6 Se 0.4

We investigated the temperature dependence of the upper critical fields

Pauli-limiting effects in the upper critical fields of a clean LiFeAs single crystal

{H}_{\text{c}2}(T)

Vortex-glass phase transition and superconductivity in an underdoped ( Ba , K ) Fe 2 As 2 single crystal

of a superconducting

Orbital selective Fermi surface shifts and mechanism of high Tc superconductivity in correlated AFeAs (A=Li,Na)

{\text{FeTe}}_{0.6}{\text{Se}}_{0.4}

Electron-hole asymmetry in Co- and Mn-doped SrFe2As2

single crystal by measuring its resistivity in static magnetic fields up to 45 T. Our observations of strong bending in the

Single-crystal growth and superconducting properties of LiFeAs

{H}_{\text{c}2}^{ab}(T)

Probing the order parameter of superconducting LiFeAs using Pb/LiFeAs and Au/LiFeAs point-contact spectroscopy

curves and a nearly isotropic

Manifestation of magnetic quantum fluctuations in the dielectric properties of a multiferroic

{H}_{\text{c}2}^{ab}(0)\ensuremath{\approx}{H}_{\text{c}2}^{c}(0)\ensuremath{\approx}48\text{ }\text{T}

Magnetic-field-dependent pinning potential in LiFeAs superconductor from its Campbell penetration depth

support the presence of a strong Pauli paramagnetic effect. We show that the Werthamer-Helfand-Hohenberg formula that includes both the Pauli limiting and the spin-orbit scattering can effectively describe both the