Glossary

CVT

Chemical vapor transport crystal growth (iodine transport agent in early UTe₂ work).

MSF

Molten-salt flux growth; yields higher T_c (~2.1 K) and much higher RRR.

RRR

Residual resistivity ratio; higher generally means fewer defects.

γ / γ*

Sommerfeld specific-heat coefficient; γ* often denotes residual C/T in the superconducting state.

H_c2

Upper critical magnetic field that destroys superconductivity.

Pauli (Clogston–Chandrasekhar) limit

Paramagnetic pair-breaking scale ≈1.86 T_c (in tesla for T_c in kelvin) for singlet superconductors.

Metamagnetism

Sharp field-induced magnetization increase; in UTe₂ near 34–35 T for H∥b.

SC_FP / halo

High-field superconducting phase wrapping the b axis in angle–field space.

TRSB

Time-reversal symmetry breaking.

Polar Kerr effect

Optical probe of TRSB via nonreciprocal reflection of circularly polarized light.

Knight shift

NMR frequency shift proportional to local spin susceptibility.

d-vector

Spin-space vector describing a triplet superconducting order parameter.

PDW

Pair density wave: superconducting order modulated at finite wavevector.

Odd parity

Orbital wavefunction odd under k → −k; required for triplet pairing in centrosymmetric crystals.