Magneto-optical probe of the fully gapped Dirac band in ZrSiS

Autor: E. Uykur, L. Z. Maulana, L. M. Schoop, B. V. Lotsch, M. Dressel, A. V. Pronin

Publikováno v: Physical Review Research, Vol 1, Iss 3, p 032015 (2019)

We present a far-infrared magneto-optical study of the gapped nodal-line semimetal ZrSiS in magnetic fields B up to 7 T. The observed field-dependent features, which represent intra- (cyclotron resonance) and interband transitions, develop as sqrt[B]

Externí odkaz: https://doaj.org/article/558660aba05a493b8d46514438401e6e

Broadband optical conductivity of the chiral multifold semimetal PdGa

Autor: Martin Dressel, Claudia Felser, Ece Uykur, S. Polatkan, A. V. Pronin, Zhi Li, L. Z. Maulana, Kaustuv Manna

We present an optical conductivity study of the multifold semimetal PdGa, performed in a broad spectral range (100 - 20000 cm-1; 12 meV - 2.5 eV) down to T = 10 K. The conductivity at frequencies below 4000 cm-1 is dominated by free carriers while at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3843c7bd6b6c5acc5d48f40901232d4

Pressure-Induced Neutral-Ionic Phase Transition in the Mixed-Stack 21 Charge-Transfer Complex (EDT-TTF-I-2)(2)TCNQF

Autor: Marc Fourmigué, Arkadiusz Frąckowiak, Di Liu, L. Z. Maulana, Olivier Jeannin, Roman Świetlik, Martin Dressel

Publikováno v: Journal of Physical Chemistry C
Journal of Physical Chemistry C, 2020, 124 (10), pp.5552-5558. ⟨10.1021/acs.jpcc.9b11786⟩
Journal of Physical Chemistry C, American Chemical Society, 2020, 124 (10), pp.5552-5558. ⟨10.1021/acs.jpcc.9b11786⟩

International audience; We explored the neutral-ionic phase transition in (EDT-TTF-I-2)(2)TCNQF by measuring the electrical conductivity as a function of temperature and hydrostatic pressure (up to 11.8 kbar). At about 4.3 kbar, the compound undergoe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::909576205fb29d86338e6b94c8a64e8b
https://univ-rennes.hal.science/hal-02562366

Optical conductivity of multifold fermions: the case of RhSi

Autor: Kaustuv Manna, Martin Dressel, Claudia Felser, L. Z. Maulana, Ece Uykur, A. V. Pronin

We measured the reflectivity of the multifold semimetal RhSi in a frequency range from 80 to 20000 cm$^{-1}$ (10 meV - 2.5 eV) at temperatures down to 10 K. The optical conductivity, calculated from the reflectivity, is dominated by the free-carrier

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eabc21dfd2b2269975337fbdc5cea71b

Inexpensive Home-Made Single Wavelength Ellipsometer (λ= 633 nm) for Measuring the Optical Constant of Nanostructured Materials

Autor: K Megasari, R Anugraha, Iman Santoso, L. Z. Maulana, Edi Suharyadi, Kamsul Abraha

Publikováno v: IOP Conference Series: Materials Science and Engineering. 202:012031

Inexpensive home-made Single wavelength Ellipsometry with RAE (Rotating Analyser Ellipsometer) configuration has been developed. Spectroscopic ellipsometry (SE) is an optical measurement technique which is based on the measurement of the change of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ec83a10dd168c40e367d70ca1128e31
https://doi.org/10.1088/1757-899x/202/1/012031