Low-energy interband transitions in the infrared response of
Ba(Fe1-xCox)(2)As-2

J 2013

Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)(2)As-2

MARŠÍK, Přemysl; C. N. WANG; M. ROESSLE; M. YAZDI-RIZI; Roman SCHUSTER et. al.

Základní údaje

Originální název

Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)(2)As-2

Autoři

MARŠÍK, Přemysl (203 Česká republika); C. N. WANG (156 Čína); M. ROESSLE (276 Německo); M. YAZDI-RIZI (364 Írán); Roman SCHUSTER (276 Německo); K. W. KIM (410 Korejská republika); Adam DUBROKA (203 Česká republika, garant, domácí); Dominik MUNZAR (203 Česká republika, domácí); T. WOLF (276 Německo); X. H. CHEN (156 Čína) a Christian BERNHARD (276 Německo)

Vydání

Physical Review B, USA, The American Physical Society, 2013, 1098-0121

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: 3.664

Kód RIV

RIV/00216224:14740/13:00071179

Organizační jednotka

Středoevropský technologický institut

DOI

http://dx.doi.org/10.1103/PhysRevB.88.180508

UT WoS

000327153300002

Klíčová slova anglicky

T-C SUPERCONDUCTORS; TEMPERATURE SUPERCONDUCTIVITY; IRON; ELECTRODYNAMICS

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 13. 3. 2018 16:09, doc. Mgr. Adam Dubroka, Ph.D.

Anotace

V originále

We studied the doping and temperature (T) dependence of the infrared (IR) response of Ba(Fe1_xCox)2As2 single crystals. We show that a weak band around 1000 cm_1, that was previously interpreted in terms of interaction of the charge carriers with magnetic excitations or of a pseudogap, is rather related to low energy interband transitions. Specifically, we show that this band exhibits a similar doping and T dependence as the hole pockets seen by angle resolved photoemission spectroscopy (ARPES). Notably, we find that it vanishes as a function of doping near the critical point where superconductivity is suppressed in the overdoped regime. Our IR data thus provide bulk specific information (complementary to the surface sensitive ARPES) for a Lifshitz transition. Our IR data also reveal a second low-energy band around 2300 cm_1 which further emphasizes the necessity to consider the multiband nature of these iron arsenides in the analysis of the optical response.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

Citovat

MARŠÍK, Přemysl; C. N. WANG; M. ROESSLE; M. YAZDI-RIZI; Roman SCHUSTER; K. W. KIM; Adam DUBROKA; Dominik MUNZAR; T. WOLF; X. H. CHEN a Christian BERNHARD. Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)(2)As-2. Physical Review B. USA: The American Physical Society, 2013, roč. 88, č. 18, s. "180508-1"-"180508-5", 5 s. ISSN 1098-0121. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.88.180508.

@article{1160082,
   author = {Maršík, Přemysl and Wang, C. N. and Roessle, M. and YazdiandRizi, M. and Schuster, Roman and Kim, K. W. and Dubroka, Adam and Munzar, Dominik and Wolf, T. and Chen, X. H. and Bernhard, Christian},
   article_location = {USA},
   article_number = {18},
   doi = {http://dx.doi.org/10.1103/PhysRevB.88.180508},
   keywords = {T-C SUPERCONDUCTORS; TEMPERATURE SUPERCONDUCTIVITY; IRON; ELECTRODYNAMICS},
   language = {eng},
   issn = {1098-0121},
   journal = {Physical Review B},
   title = {Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)(2)As-2},
   url = {http://prb.aps.org/abstract/PRB/v88/i18/e180508},
   volume = {88},
   year = {2013}
}

TY  - JOUR
ID  - 1160082
AU  - Maršík, Přemysl - Wang, C. N. - Roessle, M. - Yazdi-Rizi, M. - Schuster, Roman - Kim, K. W. - Dubroka, Adam - Munzar, Dominik - Wolf, T. - Chen, X. H. - Bernhard, Christian
PY  - 2013
TI  - Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)(2)As-2
JF  - Physical Review B
VL  - 88
IS  - 18
SP  - "180508-1"-"180508-5"
EP  - "180508-1"-"180508-5"
PB  - The American Physical Society
SN  - 10980121
KW  - T-C SUPERCONDUCTORS
KW  - TEMPERATURE SUPERCONDUCTIVITY
KW  - IRON
KW  - ELECTRODYNAMICS
UR  - http://prb.aps.org/abstract/PRB/v88/i18/e180508
L2  - http://prb.aps.org/abstract/PRB/v88/i18/e180508
N2  - We studied the doping and temperature (T) dependence of the infrared (IR) response of Ba(Fe1_xCox)2As2 single crystals. We show that a weak band around 1000 cm_1, that was previously interpreted in terms of interaction of the charge carriers with magnetic excitations or of a pseudogap, is rather related to low energy interband transitions. Specifically, we show that this band exhibits a similar doping and T dependence as the hole pockets seen by angle resolved photoemission spectroscopy (ARPES). Notably, we find that it vanishes as a function of doping near the critical point where superconductivity is suppressed in the overdoped regime. Our IR data thus provide bulk specific information (complementary to the surface sensitive ARPES) for a Lifshitz transition. Our IR data also reveal a second low-energy band around 2300 cm_1 which further emphasizes the necessity to consider the multiband nature of these iron arsenides in the analysis of the optical response.
ER  -

MARŠÍK, Přemysl; C. N. WANG; M. ROESSLE; M. YAZDI-RIZI; Roman SCHUSTER; K. W. KIM; Adam DUBROKA; Dominik MUNZAR; T. WOLF; X. H. CHEN a Christian BERNHARD. Low-energy interband transitions in the infrared response of Ba(Fe1-xCox)(2)As-2. \textit{Physical Review B}. USA: The American Physical Society, 2013, roč.~88, č.~18, s.~''180508-1''-''180508-5'', 5 s. ISSN~1098-0121. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.88.180508.

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