Thermoelectric studies of Ir1-xRhxTe2 ( 0≤x≤0.3 )

Liu, Yu; Lei, Hechang; Wang, Kefeng; Abeykoon, Milinda; Warren, J. B.; Bozin, Emil; Petrovic, C.

doi:10.1103/PhysRevB.98.094519

Thermoelectric studies of ${Ir}_{1 - x} {Rh}_{x} {Te}_{2}$ ( $0 \leq x \leq 0.3$ )

Journal Article · Wed Sep 26 00:00:00 EDT 2018 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.98.094519· OSTI ID:1480974

^[1]; Lei, Hechang ^[2]; Wang, Kefeng ^[3]; Abeykoon, Milinda ^[1]; Warren, J. B. ^[1]; Bozin, Emil ^[1]; Petrovic, C. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Renmin Univ. of China, Beijing (People's Republic of China)
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Maryland, College Park, MD (United States)

Here, we report thermoelectric properties of Ir_1–xRh_xTe₂ (0 ≤ x ≤ 0.3) alloy series where superconductivity at low temperatures emerges as the high-temperature structural transition (T_s) is suppressed. The isovalent ionic substitution of Rh into Ir has different effects on physical properties when compared to the anionic substitution of Se into Te, in which the structural transition is more stable with Se substitution. Rh substitution results in a slight reduction of lattice parameters and in an increase of number of carriers per unit cell. Weak-coupled BCS superconductivity in Ir_0.8Rh_0.2Te₂ that emerges at low temperature (T_c^zero = 2.45K) is most likely driven by electron-phonon coupling rather than dimer fluctuations mediated pairing.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0012704

OSTI ID:: 1480974

Alternate ID(s):: OSTI ID: 1473994

Report Number(s):: BNL--209352-2018-JAAM

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 9 Vol. 98; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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