TY - JOUR
T1 - Pressure Effects on Superconducting Quasiskutterudite Sr3Rh4Sn13 Compared to the Ambient Pressure Properties of Ca3Rh4Sn13 and La3Rh4Sn13 Compounds
AU - Sundaramoorthy, Muthukumaran
AU - Joseph, Boby
AU - Lingannan, Govindaraj
AU - Kumar Mondal, Pradip
AU - Nung Kuo, Chia
AU - Shan Lue, Chin
AU - Arumugam, Sonachalam
N1 - Publisher Copyright:
© 2023 The Authors. physica status solidi (RRL) Rapid Research Letters published by Wiley-VCH GmbH.
PY - 2023/12
Y1 - 2023/12
N2 - Herein, the transport properties of Sr3Rh4Sn13, Ca3Rh4Sn13, and La3Rh4Sn13 quasi-skutterudites are studied which show sharp superconducting (SC) transition with a transition temperature, Tc, ≈4.7, ≈8, and ≈2 K, respectively. In Sr3Rh4Sn13 system, electrical resistivity data evidence a pronounced anomaly before the SC transition at T* ≈136 K. No such anomalies are observed in the other two systems. Detailed structural investigations using synchrotron single-crystal and powder diffraction reveal that these systems have cubic structure with Sr3Rh4Sn13 and Ca3Rh4Sn13 being in PmPm (Formula presented.) n space group setting. The La3Rh4Sn13 shows additional weak reflections which can be described by I4132 space group with almost doubled lattice parameters compared to Sr3Rh4Sn13 system. All three systems are found to show weak Raman modes below 240 cm−1. High-pressure (HP) resistivity measurements up to 3.2-GPa on Sr3Rh4Sn13 system reveal that the T* anomaly decreases almost linearly with pressure whereas the superconducting Tc almost linearly increases. HP structural investigations on Sr3Rh4Sn13 compound reveal that the structure remains in the cubic Pm (Formula presented.) n phase in 0–10 GPa range, following well a second-order Birch–Murnaghan equation of state. The results provide interesting similarities and differences in the chemical and physical pressure effects on the quasi-skutterudite X3Rh4Sn13 (x = Sr, Ca, and La) system.
AB - Herein, the transport properties of Sr3Rh4Sn13, Ca3Rh4Sn13, and La3Rh4Sn13 quasi-skutterudites are studied which show sharp superconducting (SC) transition with a transition temperature, Tc, ≈4.7, ≈8, and ≈2 K, respectively. In Sr3Rh4Sn13 system, electrical resistivity data evidence a pronounced anomaly before the SC transition at T* ≈136 K. No such anomalies are observed in the other two systems. Detailed structural investigations using synchrotron single-crystal and powder diffraction reveal that these systems have cubic structure with Sr3Rh4Sn13 and Ca3Rh4Sn13 being in PmPm (Formula presented.) n space group setting. The La3Rh4Sn13 shows additional weak reflections which can be described by I4132 space group with almost doubled lattice parameters compared to Sr3Rh4Sn13 system. All three systems are found to show weak Raman modes below 240 cm−1. High-pressure (HP) resistivity measurements up to 3.2-GPa on Sr3Rh4Sn13 system reveal that the T* anomaly decreases almost linearly with pressure whereas the superconducting Tc almost linearly increases. HP structural investigations on Sr3Rh4Sn13 compound reveal that the structure remains in the cubic Pm (Formula presented.) n phase in 0–10 GPa range, following well a second-order Birch–Murnaghan equation of state. The results provide interesting similarities and differences in the chemical and physical pressure effects on the quasi-skutterudite X3Rh4Sn13 (x = Sr, Ca, and La) system.
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U2 - 10.1002/pssr.202300078
DO - 10.1002/pssr.202300078
M3 - Article
AN - SCOPUS:85161961479
SN - 1862-6254
VL - 17
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 12
M1 - 2300078
ER -