Physical Trend for Critical Temperature in Bi2Sr2CaCu2O8 High-temperature Superconductors

doi:10.15541/jim20260128

Journal of Inorganic Materials ›› 2026, Vol. 41 ›› Issue (6): 847-848.DOI: 10.15541/jim20260128

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Physical Trend for Critical Temperature in Bi₂Sr₂CaCu₂O₈ High-temperature Superconductors

SHI Xun¹^,²()

¹ State Key Laboratory of High Performance Ceramics, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2026-03-23 Revised:2026-03-25 Published:2026-03-25 Online:2026-03-25
Contact: SHI Xun, professor. E-mail: xshi@mail.sic.ac.cn
About author:SHI Xun (1976-), male, PhD. E-mail: xshi@mail.sic.ac.cn
Supported by:
National Natural Science Foundation of China(52588301)

Abstract

Abstract:

Superconductivity is extremely interesting and important in condensed matter physics and material science. Currently, many types of materials exhibit superconductivity with a critical temperature (T_C) located in a large range under normal pressure. Compared with the successful Bardeen-Cooper-Schrieffer (BCS) theory for low-T_C metals, there are no effective model and theory for high-temperature superconductors. In this work, taking Y-doped Bi₂Sr₂CaCu₂O₈ as an example, a power law relationship is obtained for T_C and hole concentration. A large hole concentration is beneficial to realize a high T_C. This work provides useful guidance for the future discovery of high T_C superconductors.

Key words: superconductivity, critical temperature, physical trend, Bi₂Sr₂CaCu₂O₈

CLC Number:

TM26

SHI Xun. Physical Trend for Critical Temperature in Bi₂Sr₂CaCu₂O₈ High-temperature Superconductors[J]. Journal of Inorganic Materials, 2026, 41(6): 847-848.

Figures/Tables 3

References 12

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Y content	p (300 K)/(×10²⁷, m^-3)	T_C/K
0.45	0.83	0
0.40	1.25	20
0.30	2.08	30
0.20	2.71	60
0.10	3.90	82
0	4.46	75

Y content	p (300 K)/(×10²⁷, m^-3)	T_C/K
0.45	0.83	0
0.40	1.25	20
0.30	2.08	30
0.20	2.71	60
0.10	3.90	82
0	4.46	75

Physical Trend for Critical Temperature in Bi₂Sr₂CaCu₂O₈ High-temperature Superconductors

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