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Machine learning guided discovery of superconducting calcium borocarbides

Journal Article · · Physical Review. B
 [1];  [1];  [1];  [1];  [2];  [3];  [4]
  1. Yantai University (China)
  2. Jiyang College of Zhejiang Agriculture and Forestry University, Zhuji (China)
  3. Iowa State University, Ames, IA (United States)
  4. Ames Laboratory, and Iowa State University, Ames, IA (United States)
Pursuit of superconductivity in light-element systems at ambient pressure is of great experimental and theoretical interest. In this work, we combine a machine learning (ML) method with first-principles calculations to efficiently search for the energetically favorable ternary Ca-B-C compounds. Three layered borocarbides (stable CaBC5 and metastable Ca2BC11 and CaB3C3) are predicted to be phonon-mediated superconductors at ambient pressure. The stable CaBC5 and the low-energy metastable Ca2BC11 (with formation energy only 9.5 meV/atom above the convex hull) have a superconducting Tc of 5.2 and 8.9 K, respectively. While the hexagonal CaB3C3 possesses a Tc of 26.1 K, it is metastable with formation energy of 153 meV/atom above the convex hull. The ML-guided approach opens up a way for greatly accelerating the discovery of new high-Tc superconductors.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); National Natural Science Foundation of China
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1993988
Report Number(s):
IS-J -11,119
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 2 Vol. 108; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (53)

Near-Edge Fine Structures in Electron Energy Loss Spectra: Are CaB2C2 and LaB2C2 Isotypic? journal October 2002
Nonempirical Calculation of Superconducting Transition Temperatures in Light-Element Superconductors journal January 2017
Anomalous High‐Temperature Superconductivity in YH 6 journal March 2021
Superconductivity above 70 K observed in lutetium polyhydrides journal March 2023
Synthesis and search for superconductivity in LiBC journal December 2002
Synthesis and physical properties of LiBC intermetallics journal January 2003
RandSpg: An open-source program for generating atomistic crystal structures with specific spacegroups journal April 2017
Machine Learning-Guided Discovery of Ternary Compounds Containing La, P, and Group 14 Elements journal October 2022
CaB2C2:  Reinvestigation of a Semiconducting Boride Carbide with a Layered Structure and an Interesting Boron/Carbon Ordering Scheme journal December 1999
Chemical Control of Electronic Structure and Superconductivity in Layered Borides and Borocarbides:  Understanding the Absence of Superconductivity in LixBC journal July 2006
Conventional High-Temperature Superconductivity in Metallic, Covalently Bonded, Binary-Guest C–B Clathrates journal January 2023
Superconductivity at 39 K in magnesium diboride journal March 2001
The origin of the anomalous superconducting properties of MgB2 journal August 2002
Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system journal August 2015
Superconductivity in the intercalated graphite compounds C6Yb and C6Ca journal September 2005
Superconductivity at 250 K in lanthanum hydride under high pressures journal May 2019
Evidence of near-ambient superconductivity in a N-doped lutetium hydride journal March 2023
Absence of near-ambient superconductivity in LuH2±xNy journal May 2023
First-principles prediction of phonon-mediated superconductivity in XBC (X = Mg, Ca, Sr, Ba) journal January 2019
Prediction of novel boron–carbon based clathrates journal January 2022
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Superconductivity at 28 K in CaB3C3 predicted from first-principles journal November 2013
Accelerating the discovery of novel magnetic materials using machine learning–guided adaptive feedback journal November 2022
Pressure-Induced Color Change in the Lutetium Dihydride LuH2 journal March 2023
QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials journal September 2009
Transition Temperature of Strong-Coupled Superconductors journal March 1968
High-temperature superconductivity in SrB 3 C 3 and BaB 3 C 3 predicted from first-principles anisotropic Migdal-Eliashberg theory journal April 2021
High- Tc superconductivity in doped boron-carbon clathrates journal February 2022
Path to high- Tc superconductivity via Rb substitution of guest metal atoms in the SrB3C3 clathrate journal March 2022
Transition temperature of strong-coupled superconductors reanalyzed journal August 1975
Superconductivity of graphite intercalation compounds with alkali-metal amalgams journal April 1982
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Electron-phonon interaction in the normal and superconducting states of MgB 2 journal May 2001
First-principles calculation of the superconducting transition in MgB 2 within the anisotropic Eliashberg formalism journal July 2002
LiBC electronic, vibrational, structural, and low-temperature chemical behavior of a layered material isoelectronic withMgB2 journal June 2003
First-principles calculation of superconductivity in hole-doped LiBC:Tc=65K journal July 2003
Anisotropic gap of superconducting CaC 6 : A first-principles density functional calculation journal January 2007
Prediction of phonon-mediated high-temperature superconductivity in Li 3 B 4 C 2 journal January 2015
Crystal Graph Convolutional Neural Networks for an Accurate and Interpretable Prediction of Material Properties journal April 2018
Synthesis of Yttrium Superhydride Superconductor with a Transition Temperature up to 262 K by Catalytic Hydrogenation at High Pressures journal March 2021
Metallic Hydrogen: A High-Temperature Superconductor? journal December 1968
Generalized Gradient Approximation Made Simple journal October 1996
Superconductivity of MgB 2 : Covalent Bonds Driven Metallic journal May 2001
Superconductivity of Metallic Boron in MgB 2 journal May 2001
Giant Anharmonicity and Nonlinear Electron-Phonon Coupling in MgB 2 : A Combined First-Principles Calculation and Neutron Scattering Study journal June 2001
Prediction of High T c Superconductivity in Hole-Doped LiBC journal March 2002
Hydrogen Dominant Metallic Alloys: High Temperature Superconductors? journal May 2004
Superconductivity of Bulk CaC 6 journal August 2005
Superconductivity in SrB3C3 clathrate journal January 2023
The ordering of boron and carbon atoms in the LaB2C2 structure journal July 1980
Carbon-boron clathrates as a new class of sp 3 -bonded framework materials journal January 2020
High-Temperature Ferromagnetism in CaB2C2 journal August 2001

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