# Nodeless superconductivity in the type-II Dirac semimetal PdTe2 : London penetration depth and pairing-symmetry analysis

@article{Teknowijoyo2018NodelessSI, title={Nodeless superconductivity in the type-II Dirac semimetal PdTe2 : London penetration depth and pairing-symmetry analysis}, author={S Teknowijoyo and Na Hyun Jo and Mathias S. Scheurer and Makariy A. Tanatar and Kyuil Cho and Sergei L. Bud'ko and Peter P. Orth and Paul C. Canfield and Ruslan Prozorov}, journal={Physical Review B}, year={2018} }

Superconducting gap structure was probed in type-II Dirac semimetal PdTe$_2$ by measuring the London penetration depth using tunnel diode resonator technique. At low temperatures, the data for two samples are well described by weak coupling exponential fit yielding $\lambda(T=0)=230$~nm as the only fit parameter at a fixed $\Delta(0)/T_c\approx 1.76$, and the calculated superfluid density is consistent with a fully gapped superconducting state characterized by a single gap scale. Electrical…

## 29 Citations

Single full gap with mixed type-I and type-II superconductivity on surface of the type-II Dirac semimetal
PdTe2
by point-contact spectroscopy

- PhysicsPhysical Review B
- 2019

We report our point-contact spectroscopy (PCS) study on the superconducting state of the type-II Dirac semimetal PdTe$_2$ with a superconducting transition temperature $T\rm_c \sim$ 1.65 K. Both…

Electron irradiation effects on superconductivity in
PdTe2
: An application of a generalized Anderson theorem

- Physics
- 2020

Low temperature ($\sim$ 20~K) electron irradiation with 2.5 MeV relativistic electrons was used to study the effect of controlled non-magnetic disorder on the normal and superconducting properties of…

Type-I superconductivity in the Dirac semimetal
PdTe2
probed by
μSR

- Physics
- 2019

The Dirac semimetal PdTe2 was recently reported to be a type-I superconductor with Tc=1.64 K and a critical field μ0Hc=13.6 mT. Since type-I superconductivity is unexpected for binary compounds, we…

Superconductivity under pressure in the Dirac semimetal PdTe2.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2019

A high-pressure study of the superconducting phase diagram extracted from ac-susceptibility and transport measurements on single crystalline samples finds that surface superconductivity may possibly have a non-trivial topological nature.

Penetration depth study of the type-I superconductor PdTe2.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2018

Measurements of the relative magnetic penetration depth on several single crystals using a high precision tunnel diode oscillator technique show normalized superfluid density is in good agreement with the computed curve for a type-I superconductor with nonlocal electrodynamics.

Mixed type I and type II superconductivity due to intrinsic electronic inhomogeneities in the type II Dirac semimetal PdTe2.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2019

From scanning tunneling spectroscopic measurements, it is shown that the surface of PdTe displays intrinsic electronic inhomogeneities in the normal state which leads to a mixed type I and type II superconducting behaviour along with a spatial distribution of critical fields in thesuperconducting state.

Dominant
s
-wave superconducting gap in
PdTe2
observed by tunneling spectroscopy on side junctions

- PhysicsPhysical Review B
- 2019

We have fabricated superconductor-normal metal side junctions with different barrier transparencies out of ${\mathrm{PdTe}}_{2}$ crystalline flakes and measured the differential conductance spectra.…

Enhanced, homogeneously type-II superconductivity in Cu-intercalated PdTe$_2$.

- Physics, MedicineJournal of physics. Condensed matter : an Institute of Physics journal
- 2019

As the critical temperature of the superconducting phase goes up from 1.7 K to 2.4 K on Cu-intercalation, the mixed phase disappears and the system comes homogeneously type-II, which may be attributed to an averaging effect caused by quasiparticle exchange between type-I and type- II domains mediated by the Cu atoms.

Electron–phonon coupling in superconducting 1T-PdTe2

- npj 2D Materials and Applications
- 2021

We have determined the electron–phonon interaction in type II Dirac semimetallic 1T-PdTe 2 by means of helium atom scattering. While 1T-PdTe 2 is isostructural with 1T-PtTe 2 , only the former is…

Type-II Dirac semimetal candidates
ATe2
(
A=
Pt, Pd): A de Haas-van Alphen study

- PhysicsPhysical Review Materials
- 2018

We report on a magneto-transport and quantum oscillations study on high quality single crystals of the transition metal di-tellurides PtTe$_2$ and PdTe$_2$. The de Haas-van Alphen (dHvA) oscillations…

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