Chemical pressure effect on the optical conductivity of the nodal-line semimetals ZrSiY (Y = S, Se, Te) and ZrGeY (Y = S, Te)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00521286" target="_blank" >RIV/68378271:_____/19:00521286 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/physrevb.99.125154" target="_blank" >https://doi.org/10.1103/physrevb.99.125154</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.99.125154" target="_blank" >10.1103/PhysRevB.99.125154</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemical pressure effect on the optical conductivity of the nodal-line semimetals ZrSiY (Y = S, Se, Te) and ZrGeY (Y = S, Te)

Popis výsledku v původním jazyce

ZrSiS is a nodal-line semimetal, whose electronic band structure contains a diamond-shaped line of Dirac nodes. We carried out a comparative study on the optical conductivity of ZrSiS and the related compounds ZrSiSe, ZrSiTe, ZrGeS, and ZrGeTe by reflectivity measurements over a broad frequency range combined with density functional theory calculations. The optical conductivity exhibits a distinct U shape, ending at a sharp peak at around 10000cm−1 for all studied compounds except for ZrSiTe. The U shape of the optical conductivity is due to transitions between the linearly dispersing bands crossing each other along the nodal line. The sharp high-energy peak is related to transitions between almost parallel bands, and its energy position depends on the interlayer bonding correlated with the c/a ratio, which can be tuned by either chemical or external pressure.

Název v anglickém jazyce

Chemical pressure effect on the optical conductivity of the nodal-line semimetals ZrSiY (Y = S, Se, Te) and ZrGeY (Y = S, Te)

Popis výsledku anglicky

ZrSiS is a nodal-line semimetal, whose electronic band structure contains a diamond-shaped line of Dirac nodes. We carried out a comparative study on the optical conductivity of ZrSiS and the related compounds ZrSiSe, ZrSiTe, ZrGeS, and ZrGeTe by reflectivity measurements over a broad frequency range combined with density functional theory calculations. The optical conductivity exhibits a distinct U shape, ending at a sharp peak at around 10000cm−1 for all studied compounds except for ZrSiTe. The U shape of the optical conductivity is due to transitions between the linearly dispersing bands crossing each other along the nodal line. The sharp high-energy peak is related to transitions between almost parallel bands, and its energy position depends on the interlayer bonding correlated with the c/a ratio, which can be tuned by either chemical or external pressure.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

—

Svazek periodika

99

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000462901300006

EID výsledku v databázi Scopus

2-s2.0-85064147600