Signatures of the bonding-antibonding splitting in the c-axis
infrared response of moderately underdoped bilayer and trilayer
cuprate superconductors

J 2019

Signatures of the bonding-antibonding splitting in the c-axis infrared response of moderately underdoped bilayer and trilayer cuprate superconductors

MALLETT, BPP., Přemysl MARŠÍK, Dominik MUNZAR, Christian BERNHARD, Adam DUBROKA et. al.

Základní údaje

Originální název

Signatures of the bonding-antibonding splitting in the c-axis infrared response of moderately underdoped bilayer and trilayer cuprate superconductors

Autoři

MALLETT, BPP., Přemysl MARŠÍK (203 Česká republika), Dominik MUNZAR (203 Česká republika, domácí), Christian BERNHARD (276 Německo) a Adam DUBROKA (203 Česká republika, garant, domácí)

Vydání

Physical Review B, College PK, The American Physical Society, 2019, 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: 3.575

Kód RIV

RIV/00216224:14310/19:00109307

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1103/PhysRevB.99.054513

UT WoS

000459576600001

Klíčová slova anglicky

high temperature superconductors cuprates; far infrared response; phonon anomalies; c-axis

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 8. 3. 2020 19:22, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

We report on results of our analysis of the c-axis infrared conductivity,sigma(c )(omega), of bilayer LnBa(2)Cu(3)O(7-delta) (Ln=La, Nd, Y) and trilayer Bi2Sr2Ca2Cu3O10+delta high-T-c superconductors. The analysis employs the multilayer model involving the conductivity of the bilayer or trilayer unit, sigma(bl) (omega), and that of the spacing layers separating the latter units, sigma(int) (omega). For the YBa2Cu3O7-delta sample with concentration of holes p = 0.09, our fitting of the data strongly suggests that at low temperatures, the conductivity sigma(bl)(omega) possesses a pronounced and narrow Drude peak. For samples with p >= 0.115 however, the fitting indicates that sigma(bl)(omega) is, at low temperatures, dominated by a mode at a finite energy in the range from 30 to 60 meV. The properties of this resonance are in accord with those of a collective mode that appears in the spectra of sigma(bl)(omega) calculated using a microscopic gauge-invariant theory of sigma(c)(omega) by J. Chaloupka and coworkers [Phys. Rev. B 79, 184513 (2009)]. The frequency and spectral weight of the latter mode are determined by the magnitude of the splitting between the bonding and the antibonding band of the bilayer or trilayer unit. Our results, in conjunction with the microscopic theory, thus demonstrate that in moderately underdoped bilayer and trilayer high-T-c cuprates the bilayer (or trilayer) splitting is already developed. The observed doping dependence is consistent with results from angular resolved photoemission spectroscopy.

Návaznosti

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

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

Citovat

MALLETT, BPP., Přemysl MARŠÍK, Dominik MUNZAR, Christian BERNHARD a Adam DUBROKA. Signatures of the bonding-antibonding splitting in the c-axis infrared response of moderately underdoped bilayer and trilayer cuprate superconductors. Physical Review B. College PK: The American Physical Society, 2019, roč. 99, č. 5, s. "054513-1"-"054513-11", 11 s. ISSN 2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.99.054513.

@article{1506642,
   author = {Mallett, BPP. and Maršík, Přemysl and Munzar, Dominik and Bernhard, Christian and Dubroka, Adam},
   article_location = {College PK},
   article_number = {5},
   doi = {http://dx.doi.org/10.1103/PhysRevB.99.054513},
   keywords = {high temperature superconductors cuprates; far infrared response; phonon anomalies; c-axis},
   language = {eng},
   issn = {2469-9950},
   journal = {Physical Review B},
   title = {Signatures of the bonding-antibonding splitting in the c-axis infrared response of moderately underdoped bilayer and trilayer cuprate superconductors},
   url = {http://dx.doi.org/10.1103/PhysRevB.99.054513},
   volume = {99},
   year = {2019}
}

TY  - JOUR
ID  - 1506642
AU  - Mallett, BPP. - Maršík, Přemysl - Munzar, Dominik - Bernhard, Christian - Dubroka, Adam
PY  - 2019
TI  - Signatures of the bonding-antibonding splitting in the c-axis infrared response of moderately underdoped bilayer and trilayer cuprate superconductors
JF  - Physical Review B
VL  - 99
IS  - 5
SP  - "054513-1"-"054513-11"
EP  - "054513-1"-"054513-11"
PB  - The American Physical Society
SN  - 24699950
KW  - high temperature superconductors cuprates
KW  - far infrared response
KW  - phonon anomalies
KW  - c-axis
UR  - http://dx.doi.org/10.1103/PhysRevB.99.054513
L2  - http://dx.doi.org/10.1103/PhysRevB.99.054513
N2  - We report on results of our analysis of the c-axis infrared conductivity,sigma(c )(omega), of bilayer LnBa(2)Cu(3)O(7-delta) (Ln=La, Nd, Y) and trilayer Bi2Sr2Ca2Cu3O10+delta high-T-c superconductors. The analysis employs the multilayer model involving the conductivity of the bilayer or trilayer unit, sigma(bl) (omega), and that of the spacing layers separating the latter units, sigma(int) (omega). For the YBa2Cu3O7-delta sample with concentration of holes p = 0.09, our fitting of the data strongly suggests that at low temperatures, the conductivity sigma(bl)(omega) possesses a pronounced and narrow Drude peak. For samples with p >= 0.115 however, the fitting indicates that sigma(bl)(omega) is, at low temperatures, dominated by a mode at a finite energy in the range from 30 to 60 meV. The properties of this resonance are in accord with those of a collective mode that appears in the spectra of sigma(bl)(omega) calculated using a microscopic gauge-invariant theory of sigma(c)(omega) by J. Chaloupka and coworkers [Phys. Rev. B 79, 184513 (2009)]. The frequency and spectral weight of the latter mode are determined by the magnitude of the splitting between the bonding and the antibonding band of the bilayer or trilayer unit. Our results, in conjunction with the microscopic theory, thus demonstrate that in moderately underdoped bilayer and trilayer high-T-c cuprates the bilayer (or trilayer) splitting is already developed. The observed doping dependence is consistent with results from angular resolved photoemission spectroscopy.
ER  -

MALLETT, BPP., Přemysl MARŠÍK, Dominik MUNZAR, Christian BERNHARD a Adam DUBROKA. Signatures of the bonding-antibonding splitting in the c-axis infrared response of moderately underdoped bilayer and trilayer cuprate superconductors. \textit{Physical Review B}. College PK: The American Physical Society, 2019, roč.~99, č.~5, s.~''054513-1''-''054513-11'', 11 s. ISSN~2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.99.054513.

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