236 lines
8.1 KiB
C++
236 lines
8.1 KiB
C++
/***************************************************************************
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TBofZCalc.h
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Author: Bastian M. Wojek
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e-mail: bastian.wojek@psi.ch
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2009/04/25
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***************************************************************************/
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/***************************************************************************
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* Copyright (C) 2009 by Bastian M. Wojek *
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* *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef _TBofZCalc_H_
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#define _TBofZCalc_H_
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#include <vector>
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using namespace std;
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/**
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* <p>Base class for any kind of theory function B(z)
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*/
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class TBofZCalc {
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public:
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TBofZCalc() {}
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virtual ~TBofZCalc() {
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fZ.clear();
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fBZ.clear();
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fParam.clear();
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}
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virtual vector<double>* DataZ() const {return &fZ;}
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virtual vector<double>* DataBZ() const {return &fBZ;}
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virtual void Calculate();
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virtual double GetBofZ(double) const = 0;
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virtual double GetBmin() const = 0;
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virtual double GetBmax() const = 0;
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double GetDZ() const {return fDZ;}
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protected:
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int fSteps; ///< number of discrete points where B(z) is calculated
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double fDZ; ///< resolution in z (spacing between two neighboring discrete B(z) points)
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vector<double> fParam; ///< parameters of the B(z) function
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mutable vector<double> fZ; ///< vector holding all z-values
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mutable vector<double> fBZ; ///< vector holding all B(z)-values
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};
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/**
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* <p>Base class for any kind of theory function B(z) where the inverse and its derivative are given analytically
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*/
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class TBofZCalcInverse : public TBofZCalc {
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public:
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TBofZCalcInverse() {}
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virtual ~TBofZCalcInverse() {}
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virtual vector< pair<double, double> > GetInverseAndDerivative(double) const = 0;
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};
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/**
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* <p>Class using the 1D London model to calculate Meissner screening in a superconducting half-space
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*/
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class TLondon1D_HS : public TBofZCalcInverse {
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public:
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TLondon1D_HS(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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vector< pair<double, double> > GetInverseAndDerivative(double) const;
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};
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/**
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* <p>Class using the 1D London model to calculate Meissner screening in a thin superconducting film
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*/
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class TLondon1D_1L : public TBofZCalcInverse {
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public:
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TLondon1D_1L(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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vector< pair<double, double> > GetInverseAndDerivative(double) const;
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private:
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void SetBmin();
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double fMinZ; ///< position of the minimum of B(z)
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double fMinB; ///< miniumum value of B(z)
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double fCoeff[2]; ///< array holding the results of two intermediate steps of the involved calculations
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};
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/**
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* <p>Class using the 1D London model to calculate Meissner screening in a thin superconducting film
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* consisting of two layers with different magnetic penetration depths
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*/
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class TLondon1D_2L : public TBofZCalcInverse {
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public:
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TLondon1D_2L(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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vector< pair<double, double> > GetInverseAndDerivative(double) const;
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private:
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void SetBmin();
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int fMinTag; ///< tag specifying which layer contains the minimum value of B(z)
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double fMinZ; ///< position of the minimum of B(z)
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double fMinB; ///< miniumum value of B(z)
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double fInterfaces[3]; ///< positions of the interfaces between monotonous parts of B(z) or where the function changes
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double fCoeff[4]; ///< array holding the results of four intermediate steps of the involved calculations
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};
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/**
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* <p>Class calculating the Meissner screening in a conventionally proximated system
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* consisting of one metal layer and an underlying (London) superconducting half-space
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*/
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class TProximity1D_1LHS : public TBofZCalcInverse {
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public:
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TProximity1D_1LHS(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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vector< pair<double, double> > GetInverseAndDerivative(double) const;
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private:
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void SetBmin();
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int fMinTag; ///< tag specifying which layer contains the minimum value of B(z)
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double fMinZ; ///< position of the minimum of B(z)
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double fMinB; ///< miniumum value of B(z)
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double fInterfaces[2]; ///< positions of the interfaces between a dead layer, the metallic region and the superconducting region
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};
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/**
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* <p>Class using the 1D London model to calculate Meissner screening in a thin superconducting film
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* consisting of three layers with different magnetic penetration depths
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*/
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class TLondon1D_3L : public TBofZCalcInverse {
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public:
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TLondon1D_3L(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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vector< pair<double, double> > GetInverseAndDerivative(double) const;
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private:
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void SetBmin();
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int fMinTag; ///< tag specifying which layer contains the minimum value of B(z)
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double fMinZ; ///< position of the minimum of B(z)
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double fMinB; ///< miniumum value of B(z)
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double fInterfaces[4]; ///< positions of the interfaces between monotonous parts of B(z) or where the function changes
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double fCoeff[6]; ///< array holding the results of six intermediate steps of the involved calculations
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};
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/**
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* <p>Class using the 1D London model to calculate Meissner screening in a thin superconducting film
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* consisting of three layers with different magnetic penetration depths (where lambda is the same for the two outer layers)
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*/
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class TLondon1D_3LS : public TBofZCalcInverse {
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public:
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TLondon1D_3LS(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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vector< pair<double, double> > GetInverseAndDerivative(double) const;
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private:
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void SetBmin();
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int fMinTag; ///< tag specifying which layer contains the minimum value of B(z)
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double fMinZ; ///< position of the minimum of B(z)
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double fMinB; ///< miniumum value of B(z)
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double fInterfaces[4]; ///< positions of the interfaces between monotonous parts of B(z) or where the function changes
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double fCoeff[6]; ///< array holding the results of six intermediate steps of the involved calculations
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};
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/**
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* <p>Class using the 1D London model to calculate Meissner screening in a thin superconducting film
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* consisting of three layers with two different magnetic penetration depths and the central layer being insulating
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*/
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class TLondon1D_3LwInsulator : public TBofZCalc {
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public:
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TLondon1D_3LwInsulator(const vector<double>&, unsigned int steps = 3000);
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double GetBofZ(double) const;
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double GetBmin() const;
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double GetBmax() const;
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private:
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void SetBmin();
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double fMinZ; ///< position of the minimum of B(z)
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double fMinB; ///< miniumum value of B(z)
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double fCoeff[4]; ///< array holding the results of four intermediate steps of the involved calculations
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};
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#endif // _BofZCalc_H_
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