Superconductivity-induced transverse plasma mode and phonon
anomaly in the c-axis response of the bilayer compound
RbCa2Fe4As4F2

J 2020

Superconductivity-induced transverse plasma mode and phonon anomaly in the c-axis response of the bilayer compound RbCa2Fe4As4F2

XU, B.; Dominik MUNZAR; Adam DUBROKA; E. SHEVELEVA; F. LYZWA et. al.

Základní údaje

Originální název

Superconductivity-induced transverse plasma mode and phonon anomaly in the c-axis response of the bilayer compound RbCa2Fe4As4F2

Autoři

XU, B.; Dominik MUNZAR; Adam DUBROKA; E. SHEVELEVA; F. LYZWA; P. MARSIK; C. N. WANG; Z. C. WANG; G. H. CAO a C. BERNHARD

Vydání

Physical Review B, College PK, The American Physical Society, 2020, 2469-9950

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.036

Kód RIV

RIV/00216224:14310/20:00114275

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1103/PhysRevB.101.214512

UT WoS

000538941200002

EID Scopus

2-s2.0-85086995329

Klíčová slova anglicky

HIGH-TEMPERATURE SUPERCONDUCTORS; INFRARED CONDUCTIVITY; OPTICAL PHONONS; CHARGE DYNAMICS; PSEUDOGAP; YBA2CU3OY; STATE; GAP

Štítky

14312020, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 19. 8. 2020 10:53, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We studied the infrared response of polycrystalline samples of the iron arsenide superconductor (Rb, Cs)Ca2Fe4As4F2 (Rb,Cs-12442), which has a bilayer structure similar to the high-T-c cuprates YBa2Cu3O7 (YBCO) and Bi2Sr2CaCu2O8. The c-axis reflectivity spectra R-c have been derived from the reflectivity spectra of the polycrystalline samples R-poly and the in-plane spectrum of a corresponding Cs-12442 crystal R-ab using a geometrical averaging approach with R-c = 3R(poly) - 2R(ab). In analogy to the c-axis response of the cuprates, we observe a superconductivity-induced transverse plasma mode and a phonon anomaly that are both signatures of local electric field effects that arise from a large difference between the local conductivities in the intra- and interbilayer regions. Using a multilayer model developed for the cuprates, we obtain a good description of the c-axis response and derive the local conductivities at T similar or equal to T-c of sigma(bl)(1) (omega -> 0) similar or equal to 1000 Omega(-1)cm(-1) and sigma(int)(1) (omega -> 0) similar or equal to 15 Omega(-1)cm(-1), respectively, that are similar to the ones previously found in underdoped YBCO. Different from the cuprates, we find no evidence of a normal-state pseudogap in terms of a partial suppression of the low-energy electronic states that sets in already well above T-c. There is also no clear sign of an onset of precursor superconducting pairing correlations well above T-c similar or equal to 30 K. This highlights that the pseudogap and the precursor superconducting pairing well above T-c are unique features of the cuprates with their strong electronic correlations and, for example, not just the result of a strongly anisotropic electronic response due to the layered crystal structure.

Návaznosti

GA20-10377S, projekt VaV

Název: Jevy v heterostrukturách oxidů přechodových kovů vyvolané dopováním a rozhraním (Akronym: TMO Heterostructures)

Investor: Grantová agentura ČR, Jevy v heterostrukturách oxidů přechodových kovů vyvolané dopováním a rozhraním

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

XU, B.; Dominik MUNZAR; Adam DUBROKA; E. SHEVELEVA; F. LYZWA; P. MARSIK; C. N. WANG; Z. C. WANG; G. H. CAO a C. BERNHARD. Superconductivity-induced transverse plasma mode and phonon anomaly in the c-axis response of the bilayer compound RbCa2Fe4As4F2. Physical Review B. College PK: The American Physical Society, 2020, roč. 101, č. 21, s. 1-9. ISSN 2469-9950. Dostupné z: https://doi.org/10.1103/PhysRevB.101.214512.

@article{1674760,
   author = {Xu, B. and Munzar, Dominik and Dubroka, Adam and Sheveleva, E. and Lyzwa, F. and Marsik, P. and Wang, C. N. and Wang, Z. C. and Cao, G. H. and Bernhard, C.},
   article_location = {College PK},
   article_number = {21},
   doi = {https://doi.org/10.1103/PhysRevB.101.214512},
   keywords = {HIGH-TEMPERATURE SUPERCONDUCTORS; INFRARED CONDUCTIVITY; OPTICAL PHONONS; CHARGE DYNAMICS; PSEUDOGAP; YBA2CU3OY; STATE; GAP},
   language = {eng},
   issn = {2469-9950},
   journal = {Physical Review B},
   title = {Superconductivity-induced transverse plasma mode and phonon anomaly in the c-axis response of the bilayer compound RbCa2Fe4As4F2},
   url = {https://doi.org/10.1103/PhysRevB.101.214512},
   volume = {101},
   year = {2020}
}

TY  - JOUR
ID  - 1674760
AU  - Xu, B. - Munzar, Dominik - Dubroka, Adam - Sheveleva, E. - Lyzwa, F. - Marsik, P. - Wang, C. N. - Wang, Z. C. - Cao, G. H. - Bernhard, C.
PY  - 2020
TI  - Superconductivity-induced transverse plasma mode and phonon anomaly in the c-axis response of the bilayer compound RbCa2Fe4As4F2
JF  - Physical Review B
VL  - 101
IS  - 21
SP  - 1-9
EP  - 1-9
PB  - The American Physical Society
SN  - 24699950
KW  - HIGH-TEMPERATURE SUPERCONDUCTORS
KW  - INFRARED CONDUCTIVITY
KW  - OPTICAL PHONONS
KW  - CHARGE DYNAMICS
KW  - PSEUDOGAP
KW  - YBA2CU3OY
KW  - STATE
KW  - GAP
UR  - https://doi.org/10.1103/PhysRevB.101.214512
L2  - https://doi.org/10.1103/PhysRevB.101.214512
N2  - We studied the infrared response of polycrystalline samples of the iron arsenide superconductor (Rb, Cs)Ca2Fe4As4F2 (Rb,Cs-12442), which has a bilayer structure similar to the high-T-c cuprates YBa2Cu3O7 (YBCO) and Bi2Sr2CaCu2O8. The c-axis reflectivity spectra R-c have been derived from the reflectivity spectra of the polycrystalline samples R-poly and the in-plane spectrum of a corresponding Cs-12442 crystal R-ab using a geometrical averaging approach with R-c = 3R(poly) - 2R(ab). In analogy to the c-axis response of the cuprates, we observe a superconductivity-induced transverse plasma mode and a phonon anomaly that are both signatures of local electric field effects that arise from a large difference between the local conductivities in the intra- and interbilayer regions. Using a multilayer model developed for the cuprates, we obtain a good description of the c-axis response and derive the local conductivities at T similar or equal to T-c of sigma(bl)(1) (omega -> 0) similar or equal to 1000 Omega(-1)cm(-1) and sigma(int)(1) (omega -> 0) similar or equal to 15 Omega(-1)cm(-1), respectively, that are similar to the ones previously found in underdoped YBCO. Different from the cuprates, we find no evidence of a normal-state pseudogap in terms of a partial suppression of the low-energy electronic states that sets in already well above T-c. There is also no clear sign of an onset of precursor superconducting pairing correlations well above T-c similar or equal to 30 K. This highlights that the pseudogap and the precursor superconducting pairing well above T-c are unique features of the cuprates with their strong electronic correlations and, for example, not just the result of a strongly anisotropic electronic response due to the layered crystal structure.
ER  -

XU, B.; Dominik MUNZAR; Adam DUBROKA; E. SHEVELEVA; F. LYZWA; P. MARSIK; C. N. WANG; Z. C. WANG; G. H. CAO a C. BERNHARD. Superconductivity-induced transverse plasma mode and phonon anomaly in the c-axis response of the bilayer compound RbCa2Fe4As4F2. \textit{Physical Review B}. College PK: The American Physical Society, 2020, roč.~101, č.~21, s.~1-9. ISSN~2469-9950. Dostupné z: https://doi.org/10.1103/PhysRevB.101.214512.

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